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Enhance ＂new vitality＂ online and return to ＂fireworks＂ offline —— Perspective of current consumer market

Xinhua News Agency, Beijing, June 20th Title: Enhancing "New Vitality" Online and Returning to "Fireworks" Offline —— Perspective of Current Consumer Market

Xinhua News Agency reporters Kong Xiangxin, Yang Na and Ning Ji.

Introduce policies to promote consumption in many places to boost consumer confidence; Merchants distribute gift packages of coupons to drive consumption vitality … Near the middle of the year, with the effective prevention and control of epidemic situation, all parts of China continue to make efforts to promote consumption. What are the positive changes in consumer demand? How much is consumer confidence boosted? Reporters went deep into markets, platforms and enterprises to find answers.

Enhance consumption power: combining short-term and medium-term policies to boost consumer confidence

At the beginning of June, Ms. Zhang, a citizen of Beijing, bought a refrigerator in Suning Store using Beijing’s green energy-saving coupons, saving 400 yuan. Since April, Beijing has launched a policy to promote green and energy-saving consumption for consumers all over Beijing, involving more than 20 kinds of electrical appliances.

Cultural tourism "spree", consumer vouchers "family bucket", green energy-saving consumer vouchers, and new energy vehicles "trade-in" … Recently, various localities have issued consumer vouchers in innovative forms and introduced policies to promote consumption, covering a wide range of categories.

In accordance with the central government’s series of arrangements for promoting stable economic development, in response to the impact of uncertainties such as the epidemic situation, various localities and departments have successively introduced measures to promote consumption, further focused on stabilizing the basic consumption, implemented relief support measures for poor industries such as catering, retail, tourism, civil aviation, highway, waterway and railway transportation, and accelerated the organic integration of online and offline consumption.

The reporter found out that many regions are introducing their own policies to promote consumption. Shanghai made it clear that 40,000 new non-operating bus licenses were added during the year; From May to August in Shenzhen, consumers will be subsidized by 15% of the sales price for purchasing eligible household appliances, with a cumulative maximum of 2,000 yuan per person; Guangdong, Fujian, Shandong and other places rely on their own endowments to support special industries such as prefabricated vegetables; Sichuan, Hainan, Fujian and other major tourist provinces have taken measures such as subsidies, coupons and theme activities to stimulate consumption vitality …

"Consumer vouchers have a significant boost to our sales." Song Huasong, president of CP Lotus Hunan Region, said, "Since June, our online sales have increased by over 250% year-on-year. The combination of government, platform and the brand’s own subsidies has made the brand’s online orders and passenger flow to the store have increased significantly. "

The experts interviewed said that at present, all localities and departments have introduced a new round of policies and measures to promote consumption, which combines short-term and medium-term policies, including the use of consumer vouchers and tax reduction subsidies to promote consumption compensation, focusing on the poor industries and enterprises that have been hit hard by the epidemic, and also using medium-and long-term policy measures to tap the potential of urban and rural consumption.

Active online and offline: promoting consumption in the middle of the year.

At the beginning of June, Zhang Man, an employee of Xtep, a domestic sports brand, looked at the constantly beating figures in the background of the store and knew that the backlog of new products in Shanghai warehouse should be saved. Zhang Man, who is in charge of the flagship store of Pinduoduo Platform, said that the number of store orders has increased by about three times in recent months compared with April and May. With the further recovery of logistics, the current express delivery volume of Shanghai Warehouse has recovered to about 90% before this year’s epidemic.

"Recently, the global consumption of the platform, including beauty, home appliances, clothing, maternal and child, agricultural and sideline products, has ushered in a significant rebound." The relevant person in charge of Pinduoduo said that many brands have accelerated the layout of flagship stores and continued to deepen cooperation with platforms.

The reporter learned that since the beginning of this year, many e-commerce platforms have introduced support policies for some small and medium-sized enterprises that have experienced pressure such as slowing sales and rising costs due to factors such as the epidemic.

JD.COM, together with a number of banks, launched preferential activities in 23 cities including Beijing, Shanghai, Shenzhen and Dalian, and distributed relevant coupons in Beijing, Shenzhen, Chengdu and Changsha.

Just after 0: 00 on the 19th, major consumers showed the "transcripts" of the "618" promotion activities: the accumulated order amount in JD.COM exceeded 379.3 billion yuan, a record high; Xiaomi’s omni-channel cumulative payment amount exceeded 18.7 billion yuan; The total live broadcast of e-commerce in Tik Tok was 40.45 million hours, and the scene of Tik Tok Mall drove sales to increase by 514% year-on-year …

Online consumption continues to be active, and offline "fireworks" are also returning. With the epidemic situation in Shanghai, Beijing and other places gradually stable and controllable, offline market players are gradually recovering.

A BYD 4s shop in Yizhuang, Beijing, has welcomed many consumers who choose to book cars. Chloe Wang, a sales consultant, said: "Recently, Beijing has introduced policies such as trade-in, which has increased the sales of new energy vehicles to a certain extent."

At present, the phased halving of vehicle purchase tax implemented by the state and the coordinated efforts of local policies such as "trade-in" have gradually activated the domestic demand for car purchase. According to the latest data from China Association of Automobile Manufacturers, domestic automobile production and sales increased by 59.7% and 57.6% respectively in May.

Demand gradually improves: strengthen confidence and continuously release consumption potential.

According to the data of the National Bureau of Statistics, the total retail sales of consumer goods in May decreased by 6.7% year-on-year, which was 4.4 percentage points narrower than that of the previous month. With a series of policies to promote consumption taking effect, the domestic market demand is gradually improving.

According to industry analysis, this year’s epidemic fluctuation has put pressure on the supply chain. The superposition of many policies and mid-year promotion activities have increased the consumer demand of residents, reflecting that the foundation of China’s consumption recovery is still there, which has enhanced the confidence of all walks of life in promoting consumption recovery.

"As early as May, I put the things I wanted to buy in the shopping cart. After studying and comparing the prices, I felt that it was very cost-effective to buy during the promotion period, and several purchases were even’ very profitable’." Ms. Hu from Beijing said, "I am used to shopping online now. Although the epidemic has had a certain impact, the consumption needs are still there."

Xu Zhengzhong, deputy director of the Department of Economics of the National School of Administration, believes that under the background of shrinking demand and expected weakening, although the total retail sales of consumer goods in China has declined to a certain extent, the long-term fundamentals of China’s consumer market have not changed. Especially after the epidemic, there is a replenishment period, and the consumer demand suppressed by the interruption of supply chain in the past can be compensated and satisfied to some extent.

Industry analysts pointed out that boosting consumption should take multiple measures and continue to advance. On the one hand, it is necessary to implement a number of policies from the central government to the local government to stabilize growth and employment, and accurately design and implement consumption-related measures according to local conditions to ensure the effect of stimulating consumption. On the other hand, enterprises should further strengthen the research and development of goods and services to provide consumers with more high-quality goods and services. In addition, ensuring the smooth supply chain is the basis for promoting consumption, especially online consumption. It is suggested to further promote the intelligent upgrading of the supply chain of the whole industry.

Double 11 observed：＂Quiet＂ double 11, waiting for an inflection point.

On November 11th, this shopping festival, which started one month in advance, finally ushered in a "positive day". From consumers to businesses, the word that reporters hear the most is: quiet. That’s true. In previous years, shortly after the bell rang at 0: 00 on November 11th, "good news" frequently came from major electric merchants. However, this year, most platforms have chosen not to announce the specific transaction amount of double 11, and a series of late battle reports only tacitly indicate that "sales are still growing"-today’s double 11 seems to have really reached an inflection point.

From "Choose One from Two" to "Lowest Price"

Every year in double 11, it is accompanied by smoke, and this year is no exception.

This year, Tmall declared that "the lowest price of the whole network" is the core goal; Xin Lijun, CEO of JD.COM Retail, said: "It’s really cheap, close your eyes and buy"; Pinduoduo said, "It’s really cheap every day". The smell of smoke is full.

"It is easy to form vicious competition between merchants. I sell 16 pieces and he sells 15 pieces. The platform will definitely give traffic to the low price, but the problem is that the product quality is not necessarily the same, and bad money drives out good money." Some merchants said. In addition, what merchants are most afraid of is the exclusive "floor price agreement".

The so-called "floor price agreement" refers to the merchants.Promise to provide the lowest price of the whole domestic network for a specific platform during a specific promotion period.More than one e-commerce practitioner said that the "floor price agreement" is widespread, and the liquidated damages start from one million yuan.

This scene is a bit familiar. In 2015, on the eve of double 11, JD.COM reported to the State Administration of Market Supervision that Ali disturbed the order of the e-commerce market, saying that Ali asked the merchants on the platform not to participate in the promotion activities in JD.COM at the same time during their stay in double 11 that year, and a series called "Choose One from Two" began.

In 2018, Pinduoduo was also involved in the "two-choice" dispute. Pinduoduo accused Tmall of "choosing between two options" for merchants, which led to many merchants being forced to withdraw from activities in Pinduoduo, take off their goods and close their flagship stores. Tmall said that the "alternative" did not exist, and Pinduoduo was "touching porcelain".

"The e-commerce platform’ two choices one’ actually has no choice." A person in charge of a children’s wear brand said, "If you don’t choose a certain platform, you will be restricted by this platform immediately. We are targeting at brands that specialize in stocking online. This kind of blow is really great. But the fact is that only one platform can’t provide enough traffic. Of course, multi-platform development is the best. "

The turning point appeared in 2021. In that year, the State Administration of Market Supervision said that Alibaba Group abused its dominant position in the market and imposed a penalty of 18.228 billion yuan on the online retail platform service market in China.

When businessmen thought of faithful wife, they never thought that "choose one from two" would become a "bottom price agreement". Amid the smoke, some merchants have figured out an account: the daily operating profit is not high, but double 11 needs to hire anchors, buy traffic, and the platform’s pit fees … It is tantamount to "losing money and earning money". As a result, more and more businesses choose to "lie flat", and double 11 has gradually become the competition of head enterprises, and small and medium-sized businesses are increasingly marginalized.

Consumer: There is no answer to the "lowest price"

For consumers, double 11 is not only a choice between two, three, or even "multiple choices", because the "lowest price" also has a premise.

If you want the lowest price, you need to pay a deposit first and then enjoy the discount. Red envelopes, shopping vouchers and full reduction thresholds must meet the standards; Even the same product of the same merchant at the same time has different coupons, or whether it is a platform member, such as JD.COM Plus or Tmall 88VIP, or even different pages. For example, if you place an order through Taobao’s 10 billion subsidy page, the commodity prices may be different …

Therefore, for consumers, multi-platform price comparison is not enough. "Shuttling between major live broadcast rooms and switching back and forth between Tmall, JD.COM and Pinduoduo is my daily routine after work recently." Some consumers said.

There is also a criticized pre-sale mechanism: pay the deposit first, and then pay the final payment. In the eyes of consumers, each node needs to pay the time cost.In addition to waiting for the pre-sale, you must not forget the time of paying the final payment, otherwise the deposit will be difficult to return; Some consumers have found that the pre-sale price that they are waiting for is not the lowest price, and they feel "cheated".

"The wool is on the sheep. To put it bluntly, double 11 is a business after all. " Some merchants told reporters that the platform has to make money and the merchants have to make money. The thousand-layer "routine" is aimed at consumers’ wallets.

In 2009, Taobao tried "double 11" to create a shopping festival that has been popular for 15 years. Nowadays, double 11 comes earlier every year, but consumers are confused. How to buy the cheapest?

Double 11 needs "new connotation"

Do we still need double 11 today? The answer is still yes.

The 2023 double 11 Report released by Accenture, a consultancy, shows that with the recovery of consumption and the continuous release of consumption potential, China’s consumer market has a bright future. "double 11, as the largest online consumer node in the whole year, is undoubtedly a battleground for global consumer brands".

From the data point of view, as of the afternoon of November 11, Tmall had 402 brands with a turnover of over 100 million yuan, with a year-on-year growth rate of over 38,000 brands exceeding 100%; JD.COM said that the cumulative sales of about 300 brands have exceeded 100 million yuan, and a large number of brands and businesses still maintain a high-speed sales growth trend.

Accenture believes that for brand merchants, double 11 is no longer just a sales peak, but also a special operation node. Stimulating user interest, improving user experience and enhancing user stickiness have become more critical competitive factors. Therefore, brands and platforms should inject new connotations into double 11.

The new connotation of double 11 is obviously not the "lowest price", but the healthy development of the whole industry and the establishment of a positive consumption cycle of "high-quality and low-price goods supply, meeting consumer demand and making money for businesses".

"double 11 has entered a platform period and reached a turning point where everyone wants to seek some kind of change. The dispute over low prices is obviously meaningless. This industry war will ultimately serve the technological and ecological development of the entire e-commerce industry. " Cui Lili, executive director of the Institute of Electronic Commerce of Shanghai University of Finance and Economics, said that today, the digital economy has become a key track for enterprise growth. Double 11, as a key node of online consumption, should perhaps be transformed from a shopping carnival into a testing ground for innovation capability of major platforms.

Common cold Why do you take a lot of medicine and cough or not get better？

　　Guangzhou Daily News (all-media reporter Weng Shuxian correspondent Yao Xue, Pan Yingyuan) The common cold is too common. At present, spring and summer alternate, sometimes it rains and sometimes it is sunny, and the damp heat is aggravated. If you are not careful, you will easily be "caught".

　　There is no specific medicine for a cold, and it is also a self-limiting disease. Many people can get through it after a few days’ rest, but some people take a lot of medicine, which not only fails to alleviate, but is even more serious. The most common symptoms are fever and cough, and I can’t sleep well all night. What’s even worse is that this cough sometimes lasts for half a month, and the "hands and tails" are very long. Why is it so hard? Let’s listen to Dr. Nie Wenqiang, director of the Department of Traditional Chinese Medicine, Hong Min, the First Affiliated Hospital of Guangdong Pharmaceutical University.

　　I believe that many people who suffer from colds have similar experiences: when symptoms appear, they find some medicine to take, which is effective for the first two days, but after two days, they start coughing frequently or even having a fever, but then taking medicine is not effective. Moreover, at first, I only coughed during the day, and there was a little more phlegm. Later, I took expectorant drugs and it didn’t work. I coughed even more at night. Why do people get over a cold without taking medicine for a few days, but you take a lot of medicine and cough is not good?

　　In fact, others get better quickly because his body adjusts in time to "stop loss quickly" at the beginning of a cold, and the reason why you "have a long hand and tail" is to drag the disease from "exterior syndrome to interior syndrome" and completely go through the following three stages:

　　first stage

　　At the beginning of a cold, help "positive" and "stop loss quickly"

　　Traditional Chinese medicine believes that exogenous symptoms in the early stage of a cold, such as headache, aversion to cold, stuffy nose and runny nose, heavy or sore body, fever, etc., are mainly caused by the lack of healthy qi. For example, when the resistance drops, exogenous pathogens will invade the human body under the influence of factors such as sudden climate change, abnormal cold and heat, and excessive fatigue.

　　In fact, the human body has a self-regulation mechanism. People with mild symptoms in the early stage of a cold and good health can gradually relieve symptoms by traditional methods, such as drinking some onion and black bean soup, or drinking more hot water, sweating and taking more rest to protect the "healthy qi" in the body, and can heal themselves without taking medicine.

　　Onion and black bean soup:

　　Take 3 inches of scallion and 30 grams of fermented soybean, and decoct the soup twice;

　　For patients with slightly severe symptoms, 10 grams of Ramulus Cinnamomi and 15 grams of Gardenia can be added, and the decoction can be taken twice;

　　For patients with slight cough, dry throat and itchy throat, 12 grams of cassia twig and 10 grams of almond can be decocted and taken twice.

　　Special reminder: the above is the dosage for adults, and children should reduce it as appropriate.

　　If the symptoms are more serious, it is necessary to use more pungent and warm prescriptions, such as Mahuang Decoction, Guizhi Decoction and Gegen Decoction in classic prescriptions.

　　stage Ⅱ

　　From the outside to the inside, the immune "army" can’t stand it.

　　In the early stage of a cold, those who can "stop the loss" in time will heal themselves in a week or so, but often many people have not improved for a week and dragged them into the second stage — — The disease "goes from the outside to the inside", and the immune "army" in the body is losing ground, and even starts to have a fever and cough.

　　People with chronic pharyngitis, in particular, are more likely to lead to acute attacks of chronic diseases. The "cold and dampness" that was originally lurking in the body and did not dare to act rashly emerged at this time, cooperating with the cold virus and attacking the body together.

　　From the perspective of Chinese medicine, the common cold cough is the result of cold virus and cold and dampness in the body. The treatment principle of traditional Chinese medicine is to comprehensively evaluate and treat according to syndrome differentiation by combining everyone’s physique, medical history, predisposing factors and course of disease.

　　The third stage

　　Cough getting worse? It hurts to take medicine indiscriminately

　　To deal with the common cold, many people will buy their own medicine "autonomy". In fact, patients who are not studying medicine generally don’t understand the syndrome differentiation of diseases, and they lack syndrome differentiation when buying their own medicine, so they may take the wrong medicine.

　　Many people get worse and have a longer course of disease because of taking drugs indiscriminately. For example, in many cold patients with yellow phlegm and sore throat, TCM syndrome differentiation may be "cold-heat mixed syndrome". If you take a large amount of heat-clearing antidote, the inflammation will be eliminated, but the "righteousness" will also be damaged. In the face of the invasion of cold virus, it will become chronic cough and asthma for a long time.

　　People with "cold and heat mixed syndrome" are often "deficiency in the interior" accompanied by heat syndrome. If you just take heat-clearing drugs blindly, you will not only be unable to get rid of "cold and dampness", but also can’t make up for righteousness. If you use a lot of heat-clearing and antidote, it will hurt "righteousness". Therefore, at this stage, it is necessary to help "righteousness" while moderately clearing away heat.

　　Hong Min reminded that especially patients who are prone to cough and asthma repeatedly at ordinary times are mostly accompanied by deficiency in the interior (lack of healthy qi), so don’t eat proprietary Chinese medicines without authorization.

　　People who are usually weak, easy to sweat and have low immunity and easy to catch a cold, can try Huangqi Jianzhong decoction in flu season or when the weather is changeable to help replenish qi and consolidate exterior.

　　Huangqi Jianzhong decoction

　　Formula: 10g of Astragalus membranaceus, 3g of Cinnamomum cassia twig, 6g of Radix Paeoniae Alba, 3g of Radix Glycyrrhizae Preparata, 3g of Radix Saposhnikoviae, 3g of red dates and 6g of ginger.

　　Usage: decoct soup once a day, and add about 10ml of honey when taking it.

　　However, not everyone is suitable for using this preventive prescription. It is recommended to consult a doctor first and make a clear diagnosis before deciding whether to take it.

Changan Automobile used IoTDB to build a 150 million time series vehicle condition data processing scheme, and the query was stable to achieve millisecond return.

This article was interviewed from:Chang’anautomobile

1. Changan Automobile Business Scenario

Chongqing Changan Automobile Co., Ltd. is one of the four groups of China Automobile. It is an automobile company that develops, manufactures and sells a full range of passenger cars and commercial vehicles. Its main products include a full range of passenger cars, small commercial vehicles, light trucks, minivans and large and medium-sized buses, and a full range of engines. Changan Automobile always takes "leading automobile civilization and benefiting human life" as its mission, takes customers as its center and products as its main line, continuously provides high-quality products and services, and strives to promote the third venture-innovative business plan, transform itself into an intelligent low-carbon travel technology company, and strive to achieve world-renowned automobile enterprises.

At present, digital technology has deeply reconstructed the automobile. The automobile has gradually evolved from a mechanical product equipped with electronic functions to an electronic product equipped with mechanical functions. The integration of cloud data and AI technology has gradually turned the automobile into a large intelligent mobile terminal, data acquisition carrier, energy storage unit and a mobile multifunctional space. Generally speaking, the smart car has gradually transformed into a wheeled mobile robot with multi-functional space. In this context, the national policy strongly encourages the development of intelligent vehicles and self-driving driven by Industry-University-Research, and the domestic head and new power OEMs gradually take intelligent networked vehicles or self-driving direction as their core business.

Changan Automobile focuses on the development of intelligent vehicles, and its application panorama includes intelligent vehicle control (remote control analysis), intelligent cockpit (vehicle burial point, vehicle user behavior analysis),IoT Data access (access detection, vehicle activation monitoring) and IoT vehicle condition management (vehicle condition monitoring, power research, vehicle networking big screen), realizing business display including eye-catching system, vehicle remote diagnosis and remote early warning system, remote debugging system, etc.

In order to realize the construction of intelligent vehicles, Changan Automobile has built an intelligent vehicle data platform. This big data processing platform is divided into five layers: data access layer, data storage layer, resource scheduling layer, computing engine layer and business presentation layer. now IoTDB It is mainly used in the data storage layer to cope with the massive Internet of Vehicles.time series dataManagement.

The industrial scene of realizing intelligent automobile direction involves a large number of time series data acquisition of vehicle equipment and sensor layer, which is very important for time seriesData solutionThe perfection and efficiency of the system pose a great challenge. Changan Automobile’s current time series data solution has obvious limitations, so we hope to find a better solution for writing, storing, querying and analyzing the time series data in the field of intelligent automobiles.

Based on the characteristics and advantages of IoTDB time series database, Changan Automobile chose IoTDB as the time series data processing scheme of mass intelligent networked vehicles, which realized flexible expansion of mass data writing and storage, effectively improved query performance and reduced equipment and operation and maintenance costs.

2. Pain points of business requirements

210 million data measuring points, with over 10 million new data points per second.

Changan Automobile, as one of the four major automobile groups in China, has a huge business volume, and it needs to deal with a large number of vehicles and data. At present, Changan Automobile’s networked vehicle mass vehicle condition time series data management system has collected about 570,000 vehicles on the network, with a total of 150 million data measuring points and more than 10 million data points added every second. Therefore, Changan Automobile has high requirements for real-time writing, compression and storage of time series database under this data volume.

2.2 High-speed signal acquisition frequency is high

The vehicle acquisition signals of Changan Automobile can be divided into high-speed signals and conventional signals. High-speed signals need to be acquired in milliseconds, and conventional signals need to be acquired in 3-4 seconds. Changan Automobile’s time series data solution should be able to support these two different acquisition frequencies at the same time, and ensure the continuous operation of real-time low-delay acquisition of high-speed signals.

2.3 Low latency data query

The vehicle data query scenario of Changan Automobile mainly includes the effective query of multiple time series of bicycles and the query of the newest point of the full time series of bicycles, that is, the classic real-time and off-line vehicle condition/historical vehicle condition query scenario in the vehicle networking scenario. Changan Automobile’s time series data solution needs to effectively support real-time real-time query and query with a large amount of stored historical data with low delay.

Based on the previous time series data solution of Changan Automobile, a vehicle condition data entered HBase If you want to do analysis later, you need to completely unload the incremental data from HBase, and this batch of range reading process takes a long time. For example, if HBase wants to do offline processing of yesterday’s data, it needs to unload the operational data and put it into Hadoop for analysis this morning. In addition, with the increase of business volume, it takes longer and longer to use HBase for batch reading, which is not suitable for the rapidly expanding data volume scene.

2.4 High cost and maintenance difficulty

Changan Automobile initially adopted HBase as the solution of time series data management, but faced with tens of millions of data measuring points per second, HBase’s cluster data writing was undertaken by 25 data nodes, so many data nodes directly led to the high maintenance difficulty and cost of the system.

3. reasons for selecting IoTDB

3.1 The data structure ensures high scalability, low cost and high stability.

In view of the huge existing data volume and new data volume processing requirements of Changan Automobile, IoTDB’s exclusive native time series model of the Internet of Things stores time series data in layers of devices, measuring points/sensors. With the continuous increase of data volume, it only needs to directly expand the hardware equipment of the query node without interrupting the normal operation of the system, which can achieve second-level expansion and effectively reduce the management and operation costs.

3.2 to achieve tens of millions of writing speed

In view of Changan Automobile’s demand for frequent writing of time series data, IoTDB can write tens of millions of data points per second and handle multi-device billion-level data points, and the writing rate does not decrease with the increase of data volume, maintaining a stable high-speed level.

3.3 Support valid details and latest value query.

Changan Automobile will use IoTDB for detailed query of massive networked vehicle condition data in the scene of vehicle fault alarm. IoTDB adopts a storage architecture that combines the time stamps of data points from below the root node with multi-level storage paths, so that the time series data of different dimensions can be effectively classified and stored, and then the time series data in IoTDB can be determined quickly and uniquely during the query, so that the query efficiency can still be maintained under the condition of using detailed query.

3.4 Improve the batch reading rate and achieve real-time analysis.

In order to meet the demand of Changan Automobile for fast batch reading of data before data analysis, IoTDB can directly synchronize the underlying data files of IoTDB because of its time index, and use the seamless integration of IoTDB and other big data systems to directly analyze the stored file TsFile in real time with Spark engine, which reduces the number of exported copies required for data analysis and improves the analysis and calculation efficiency compared with the original scheme.

3.5 Timely operation and maintenance, and active verification

Changan Automobile Project believes that when the business scenario brings new challenges to the time series data solution, the efficiency and thinking of dealing with the problem is very important. The team behind an excellent time series data solution needs to be able to solve the problem quickly and make the database cover the performance improvement and rich functions required by the business scenario. When Changan Automobile encounters problems in the production environment, the R&D team of IoTDB will quickly coordinate with relevant R&D resources to help. As a team with more than ten years’ experience in researching and serving industrial users, the team members are particularly willing to use IoTDB to verify the ecological environment in the industrial Internet scene, so that the success of the project and the maturity of the product can achieve mutual benefit and win-win. Changan automobile project expressed its gratitude to the IoTDB development team.

It can be seen that the technical advantages of IoTDB can effectively solve the business pain point of Changan Automobile’s current management of time series data, so Changan Automobile chose IoTDB to build the data storage layer of Changan Smart Car Data Platform. This paper introduces and analyzes the solution architecture, time series model structure setting and query performance effect of large-scale time series data management built by Changan Automobile based on IoTDB.

4. Solution architecture

The Internet of Vehicles is a typical Internet of Things scenario. The main data of the Internet of Things scene is time series data, and the whole life cycle of time series data is divided into six stages: collection, caching, processing, storage, query analysis and visualization application.

In the scene of car networking in Chang ‘an, devices and sensors such as Tbox and THU are used to collect car networking data (such as EFI data of engines, rotational speed, vehicle speed, etc.). After the data goes to the cloud, the message is ingested based on the private TCP protocol of Changan Automobile and the gateway written based on Netty. After entering the TU-GW application of K8s through CLB, the message is parsed. The message is parsed and sent to the message queue, and the time sequence messages required by different services are distributed to different storage terminals. After being written into the storage engine, Changan Automobile TSP business system and APP will query the time series data according to the latest data and historical vehicle conditions.

At present, the architecture of large-scale time series data management of Changan Automobile is divided into 1.0 and 2.0 versions. In version 1.0, the time series storage engine mainly used for car condition scenes is HBase, which realizes the writing of historical car condition data. Due to the huge volume of historical data, 25 HBase data nodes need to write cluster data. At the same time, version 1.0 of HBase cluster is configured with 10 Region Server. Because the storage architecture of HBase cannot independently support the latest vehicle condition query, the latest vehicle condition query needs to be implemented based on Redis.

The architecture of version 2.0 adopts the architecture of writing data into IoTDB through Kafka. The test scenario adopts a single machine with high IO, that is, a cluster configuration with large memory (about 384 g) and full SSD (about 50 T). After the good data schema design of IoTDB, one IoTDB machine replaced the writing function of 25 HBase nodes, and successfully maintained high stability for more than one year. At present, the test data volume is about 1.5 million pieces of data per second, and one time series data involves 16-17 measuring points on average, which stably supports the overall writing data volume of about ten thousand levels.

At the same time, the powerful data query capability of IoTDB enables the version 2.0 based on IoTDB to realize a set of scenarios in which the engine supports the query of bicycle time range (real-time query) and the query of the newest point of bicycle full time series (latest vehicle condition query), and can stably achieve the millisecond return of the results of the two types of queries.

With the improvement of writing and querying ability, the time series data management architecture based on IoTDB greatly reduces the complexity of the original HBase+Redis scheme, and increases the volume of devices and data accessible to IoTDB. At present, Changan Automobile uses about 570,000 IoTDB stand-alone access devices, and the custody time series is about 150 million.

5. Time series model and query application

At present, in the design of the four-level node timing model of the root node, service name, equipment layer and sensor layer of IoTDB, the equipment layer of Changan Automobile adopts the TUID of TBOX, that is, the equipment ID as the third-level node; In the sensor/measuring point layer, except for the signal name, the CANID is connected with an underline as the fourth level node. The reason for the design of this storage structure is that it is convenient to use the select last * from root.CANID command supported by IoTDB to query all the data values of bicycles under a certain CANID, so that IoTDB can simultaneously realize the main query scenario of Changan Automobile: the combined query of real-time vehicle condition and historical vehicle condition.

With the support of this data structure, Changan Automobile uses the following statements to run common query scenarios:

1. Query the time range of a single device

The SQL statement is as follows:

Select canid _ signal from root. can _ condition. tuid where time > t1 and time6. Future prospect.

Since 2020, Changan Automobile and IoTDB have cooperated stably for 2 years, and a stable and effective intelligent networked vehicle remote monitoring system has been built. Because the intelligent networked automobile business is in the initial stage of explosion, it is foreseeable that the number and density of vehicles collected in the vehicle networking scene will greatly expand in the future, and the amount of time series data will also increase exponentially. Big source data is still the main problem that the vehicle networking system will face.

` In the future, Changan Automobile and IoTDB will work together to further expand the volume of vehicle data access, enrich the related applications and functions of IoTDB in vehicle networking scenarios, and realize effective management of more vehicle networking business time series data.

(promotion)

Braille publishing house received CCTV audio-visual copyright.

　　A few days ago, Ma Runsheng, assistant to the president of China International Television Corporation and president of China Radio, Film and Television Program Trading Center, and Zhang Wei, president of China Braille Publishing House signed contracts on behalf of both parties, and China Braille Publishing House obtained 60 kinds of copyright of barrier-free programs authorized by CCTV; 100 kinds of excellent programs for browsing and deep processing of professional websites for the disabled; There are 100 kinds of finished audio-visual products of film and television programs, with a total of 6,000 works (episodes) and 200,000 minutes.

　　This is the first time that CCTV has authorized the excellent film and television resources for many years to special industries on a large scale and systematically. China Braille Publishing House will deeply process the authorized programs without barriers, and distribute the finished programs and the audio-visual products through special and effective channels such as the Internet and local disabled persons’ federations, so that the disabled can enjoy CCTV’s well-known audio-visual resources as soon as possible.

　　(Huang Sheng)

Be 100% good! ＂My Extraordinary Parents＂ Kara Wai was affirmed.

Special feature of 1905 film network　After 60 years old, I didn’t have a rest, but I was busier. My Extraordinary Parents and Look at a BridgeMe through the darknessI love you! "Save the suspect"… … One new play after another.

Among them, "My Extraordinary Parents" was first released, and Kara Wai played a blind mother in the film. In order to play the role well, she "experienced" it from the inside out.

After the film was released, many viewers praised Kara Wai’s good acting skills. The affirmation of the best actress in the three Hong Kong film awards has already proved Kara Wai’s strength. She has never slackened her efforts in every performance and always strives for perfection.In Kara Wai’s words, every role should be 100% dedicated, and every shot should be 100% good.

01.Play the blind, and make great efforts for both spirit and form.

My Extraordinary Parents, adapted from the director’s true story, tells the family story of a pair of blind parents raising their daughter with normal vision.

Kara Wai, who plays the blind mother, has made great efforts in shaping her appearance and manner.She keeps training to control her eyes, imitating the state that the eyes of the blind keep turning and their eyes are distracted. "I have practiced it, and I can go out and enter. Every time I shoot, I adjust my eyes to certain positions and spend a lot of hard work."

In addition to shaping the appearance, Kara Wai also asked an ophthalmologist to take a pair of copper contact lenses, put them on and carefully ponder the mentality of the blind. "It’s really the same as a blind person. When all the light is completely blocked, you lose your way, and then you can really play a blind person. What is her heart and what kind of dark fear she faces?"

Kara Wai said that every time she knows a role in advance, she will do all her homework well, and when she starts work, she will soon be able to enter the role.

In the movie, the emotional entanglement between mother and daughter also made Kara Wai feel the same way. Kara Wai has replaced many experiences and understanding of the relationship between her and her mother in the past. "When my daughter is rebellious, she can’t get along with her point of view, but they can’t be separated from each other and need each other, but this need sometimes hurts each other. This is the way I used when I played with Qianyu."

"I have to be 100% good in every shot until now." Kara Wai said that the principle of her acting is that if she gets paid, she must do it well, and at the same time, she must respect the actor’s profession. "Every shot should stay forever. If I don’t shoot a shot well, I will miss it for a long time."

02."I’m so strong, I’m afraid Jiang Lang will run out of talent."

Kara Wai, who was born as an action actor, got up from the bottom and struggled all the way to this day in fighting with blood and injuries again and again, and achieved many achievements.

Kara Wai had a hard childhood. At the age of three or four, he peddled with his family in the streets of Wan Chai. As a teenager, he worked as a dancer in a nightclub. Later, he was dug up by the director and made the film Legend of the Condor Heroes as Mu Nianci. Since then, he has entered the film industry and changed his life.

Kara Wai has the personality of a wild child since she was a child, and she has the experience of dancing on the stage, so she was not timid when she made a movie for the first time.

The first scene of The Legend of the Condor Heroes was a contest to get married, and Kara Wai was taught to play opera directly on the spot. The confidence and elan of the newborn calf that was not afraid of tigers made the hero alexander fu mistakenly think that she had been filming for several years.

The movie dream was planted when Kara Wai was young. Like many children at that time, she often sneaked into the cinema to watch movies. The first movie she saw was yes, and her awe of movies and performances was born from then on.

Mu Nianci became famous in World War I, and Kara Wai successfully entered Shaw Pictures as a martial arts actor and studied under the direction. At the age of 22, she won the Best Actress Award in the first Hong Kong Film Awards. In her view, the first Golden Awards trophy was won entirely by fighting and relying on life and health.

"You ask me how many injuries, I don’t know. You ask me where I am not injured, and I can tell you that I am not. " When Shaw made a martial arts film, Kara Wai was viciously punched in the stomach by an opposite actor for more than 40 times. At that time, she had only one thought: "If you didn’t kill me, I would have a chance in the future. I want to cover you up in this scene today. "

Therefore, when Kara Wai won the prize for the first time, all she thought about was bitterness. "I play every day and get hurt every day. Even if I have surgery, the thread has not been removed a few days later, and I still have to shoot with my stomach covered." Even if she became more and more popular later, she would feel a little unbalanced when she saw other actors shooting fashion shows, beautiful and comfortable.

But Kara Wai is an indomitable person by nature. "When you are chosen for the role of martial arts and you need it again, you can only do it best. I must stand in the first place to survive. "

Kara Wai’s perseverance, also have been crushed. At the end of 1990s, with the decline of martial arts films and the change of movie environment from generation to generation, Kara Wai’s career fell into a trough, and she suffered from depression. In the worst case, she even swallowed sleeping pills and gave up herself. Fortunately, with the help of relatives and friends, she rallied.

In 2010, 50-year-old Kara Wai won the Best Actress Award at the Hong Kong Film Awards for the second time for "Devil". I have experienced all kinds of twists and turns from being a popular female star to being neglected and making a comeback. The arrival of this award is of great significance to her and has the deepest feelings.

Kara Wai recalled, "I hold this award, and I said that nothing can be changed, because it was because I suffered a lot of grievances, paid a lot of efforts, and had a chance given to me by many friends and God, so this award is more important than anything."

Later, Kara Wai won the Golden Award for Best Actress for the third time. She plays an elderly person who lives alone with Alzheimer’s disease. Kara Wai’s mother died because of this disease. She wants to use this film to commemorate her mother and make more people pay attention to Alzheimer’s disease.

Kara Wai cares about the disadvantaged groups, and this time he took on My Extraordinary Parents, hoping to use this positive film to appeal to the public to respect and care for the visually impaired.

Kara Wai doesn’t act in action movies now, and she will also worry about her bad state and poor performance when acting in literary plays. "The more I am so strong, the less I can perform, the less I let others know, the more I force myself, and I really can’t perform. The director is sorry to give me two minutes, and I will walk away again. The whole mood will be adjusted. It is psychological pressure to throw away all the feeling of smoking and come back."

Nowadays, Kara Wai likes to cooperate with new directors, trying her best to support young talents, and even working with them at a reduced salary. This is the case with My Extraordinary Parents, and the sincerity of the director made her determined to take over.

Every time acting, Kara Wai wants to find a new way to perform. "How can I act when I have met several bottlenecks?"? I can’t find it. I can only play it in the old way, so I can’t open it. The new directors have new ideas, and they can bring me many new things and new ways of interpretation. "

"I am afraid that people will see that I am exhausted in Jiang Lang." Kara Wai didn’t stop, she was still fighting and rushing.

Another wave of end-of-year coupons came to the local area, focusing on these consumption areas in the fourth quarter.

　　Near the end of the year, another batch of coupons began to be distributed intensively.

　　Recently, Sichuan, Jiangxi, Beijing, Sanya, Wuhan and other provinces and cities have successively issued coupons for cultural tourism or automobile appliances, and some provinces and cities have also announced that they will issue coupons in the near future. Not only that, these places have also introduced various policies and measures to boost and expand consumption.

　　Intensive distribution of consumer vouchers

　　On November 27th, Sanya issued the third tax-free coupons for tourists from all over the country, with a maximum reduction of 1,600 yuan. Previously, the Sanya Municipal Bureau of Commerce issued "Several Measures to Further Promote Consumption Growth in Sanya in 2023", demanding that tax-free promotion be vigorously carried out, tax-free coupons be issued, and tax-free business entities be encouraged and guided to hold tax-free promotion activities.

　　In recent days, Sichuan, Guangdong, Jiangxi, Wuhan, Beijing and other provinces and cities have also intensively issued coupons or announced that they will issue coupons in the near future. These coupons are basically based on cultural tourism consumption and automobile household appliances consumption.

　　For example, Guangdong will issue 100 million yuan coupons for cultural tours to residents and tourists who spend money in Guangdong, provide 1 million discount tickets for scenic spots, distribute 1 million special discount air tickets and launch 10,000 discount rooms.

　　On December 1st, Jiangxi will begin to issue the "2023 Jiangxi Provincial Automobile Voucher" with a total amount of 19.53 million yuan to the whole province. There are 6,510 car coupons for this activity, and the amount of each car coupon is set to 3,000 yuan regardless of the car purchase price.

　　The 2023 "Shu Li An Yi, Warm Winter and Enjoy" coupons issued by Sichuan Province are mainly aimed at supermarkets, home appliances, restaurants and other key areas of consumption. Among them, the provincial finance contributed 100 million yuan, the supporting funds of each issuing platform are expected to exceed 300 million yuan, the merchants discounted and promoted 100 million yuan, and the expected profit-making amount exceeded 500 million yuan.

　　Zeng Junlin, deputy director of the Sichuan Provincial Bureau of Statistics, said that the consumer market in Sichuan performed well in the first three quarters, but there was still a gap from normal growth. The total retail sales of social consumer goods only increased by 4.4% on average in two years, which was 5.9 percentage points lower than the same period in 2019. Traditional retail sales are under pressure, the retail sales of convenience stores only increased by 1.5%, and the retail sales of supermarkets decreased by 0.1%.

　　Chang Yang, chief analyst of Zhongtai Securities Research Institute, told CBN that from the CPI data of 31 provinces recently released by the National Bureau of Statistics, we can observe the differentiation among different provinces. Judging from the data of chain growth rate, 17 of the 31 provinces saw a decline in chain growth rate in October, reflecting that demand in most provinces was weak compared with supply in the short term.

　　With the continuous efforts of this year’s consumption promotion policy and the National Day Golden Week, the consumption data in October this year showed an accelerated recovery. In October, the total retail sales of consumer goods nationwide reached 4,333.3 billion yuan, up 7.6% year-on-year, and the growth rate was 2.1 percentage points faster than that in September. After deducting the price factor, the total retail sales of social consumer goods actually increased by 8.4%, 2.3 percentage points faster than that in September.

　　However, Fu Jiaqi, a statistician of the Department of Trade and Economics of the National Bureau of Statistics, interpreted the data of the consumer market in October and thought that although the consumer market maintained a good recovery momentum, we should also see that the acceleration of the growth rate of total retail sales of social consumer goods in October was due to the low base in the same period of last year. At present, the consumption power and willingness of residents still need to be improved, the recovery of residential goods is lagging behind, and the operating pressure of some commercial enterprises is still relatively high.

　　Sprint in the fourth quarter to achieve the annual goal

　　In fact, in comparison, the recovery of consumption, especially contact consumption, is more obvious and has become the main driving force for economic growth. Especially from November to December last year, under the serious influence of the epidemic, consumption declined, so there was a low cardinal utility. Stimulating consumption in the last two months of this year will be of great help to promote economic growth and accomplish this year’s goals and tasks.

　　The data shows that in November 2022, the total retail sales of social consumer goods was 3,861.5 billion yuan, down 5.9% year-on-year. Among them, the retail sales of consumer goods other than automobiles reached 3,482.8 billion yuan, down 6.1%. In December 2022, the total retail sales of social consumer goods was 4,054.2 billion yuan, down 1.8% year-on-year. Among them, the retail sales of consumer goods other than automobiles reached 3,543.8 billion yuan, down 2.6%.

　　On October 27th, Sichuan Province held a teleconference on the province’s economic operation scheduling in the fourth quarter of 2023. In response to the sprint in the last two months of this year, the meeting requested that in terms of scheduling strategy, precise policies should be made by industry, agriculture should make up the gap as much as possible and tie the country, industry should overcome difficulties and consolidate the momentum of recovery, and service industry should carry a heavier burden and gallop.

　　Since the beginning of this year, due to the influence of multiple factors, the downward pressure on some local economies has continued to increase. Therefore, it is necessary to make up for the shortcomings and make the consumption and service industries "pick a heavier list" and "Dora Run" become a breakthrough for local shocks in the fourth quarter.

　　On November 24th, the website of Guangdong Provincial Government published "Several Measures to Further Boost and Expand Consumption in Guangdong Province", which put forward 27 specific measures from eight aspects, including stabilizing automobile consumption, promoting household appliances and electronic products consumption, stabilizing housing consumption, and promoting the expansion and upgrading of service consumption.

　　Before the meeting in Sichuan Province mentioned above, in order to further take effective measures to stimulate market vitality, sprint this year’s objectives and tasks, promote a good start next year, and promote the sustained improvement of economic operation, the General Office of the Sichuan Provincial Government issued a number of policies and measures on further stimulating market vitality and promoting the sustained improvement of current economic operation.

　　Among them, the boosting policy includes not only issuing consumer vouchers, but also implementing measures such as financial discount on consumer credit, with real money to support it. During the period from September 1, 2023 to March 31, 2024, the banking institutions issued one-year and above off-line consumer loans to residents in the province, which were used for four categories of goods, such as automobile purchase, electronic products, housing decoration, household appliances, furniture and durable goods. The financial department gave the residents a one-year one-time discount at an annualized interest rate of 1.5% with a single amount not exceeding 3,000 yuan.

　　In addition, Sichuan has also implemented measures such as subsidies for new flight routes in winter, incentives for travel agencies to attract customers into Sichuan, and reduction of tolls for small passenger cars from outside Sichuan. During the "Winter Tour in Sichuan Consumption Season", travel agencies that organize tourism teams to come to Sichuan will be rewarded according to each person’s trip to 30 yuan; In addition to the existing ETC preferential policies, a 50% discount will be given to the tolls of small passenger cars (Class I passenger cars) with license plates outside the province.

The class teacher drew a super cute pinyin table, but half the students in the class had finished learning pinyin in advance.

　　The summer vacation is about to return to zero. These days, not only students who have not finished their homework, but also novice teachers who are about to take over the first batch of students in their lives are in a state of intense preparation. For the new semester that will start soon, their hearts are both looking forward to and uneasy.

　　Jiang Li, a teacher at Dinglan No.2 Primary School in Hangzhou, went to Qianbao reporter to tell her recent distress. Because Mr. Ding found that the "opening gift" that he started preparing for freshmen early may not be used.

　　It is a difficult problem for freshmen to learn pinyin.

　　She racked her brains to think of a way.

　　Teacher Jiang is a post-1995, who just joined this year. After the new semester begins, she will be the Chinese teacher and head teacher of Class 1 (5) in the school.

　　Because he is a novice, this summer vacation, Mr. Jiang has almost no rest and has been preparing for the new semester. Nowadays, all primary schools advocate zero-based admission, regardless of pinyin or literacy, they begin to learn after entering primary school. Therefore, when preparing lessons, Mr. Jiang thought a lot of countermeasures for the problems that zero-based students often encounter when they are beginners.

　　"For children in grade one, pinyin is very difficult to learn. Because letters are too abstract for them, it is difficult to establish a connection between letters and pronunciations, and many letters with similar shapes and sounds are easily confused. " Teacher Jiang said.

　　This summer vacation, she has been thinking about pinyin. How can we help children learn pinyin effectively?

　　Not long ago, when practicing the standard writing of pinyin, Teacher Jiang had an epiphany and came up with a way — — Hand-drawn cartoon pinyin table.

　　"In math textbooks, in order to let children remember the writing of numbers, each number will be integrated into cartoon pictures. Pinyin and numbers are abstract symbols. If pinyin letters are also integrated into cartoon patterns, they may have the same effect. " Teacher Jiang explained.

　　After having an idea, she immediately started to work and spent an hour to finish the preliminary drawing of the cartoon pinyin table. On this pinyin table, some common animals or articles are painted, and one or two pinyin letters are "inlaid" in each pattern. "Now this is just a sketch. I’m going to ask the art teacher for help to further beautify and simplify the pattern, and then use it as a teaching tool for students to consolidate their knowledge and expand their thinking." Teacher Jiang said that she also considered letting students draw together, and the "mosaic" way of patterns and letters was designed by the students themselves.

　　I have to say that this is a very creative idea. Adding vivid teaching methods such as pictures, jingles and finger dancing to the classroom can help junior children enjoy the class more quickly and develop their imagination.

　　However, Mr. Jiang soon found that his "opening ceremony" carefully prepared for the students was probably not used.

　　More than half the students in the class.

　　I finished learning pinyin in advance.

　　"I know that some students will definitely learn Pinyin in advance during the summer vacation, but the proportion should not be too large, and even if they want to learn, they will not learn it systematically." Teacher Jiang said.

　　These two days, she made a home visit to the students in her class, and this idea was completely subverted. "I found that more than half of the students in the class have almost finished learning Pinyin in advance." During her home visit, she specially brought her textbooks to check on the spot. Many students who have studied pinyin have mastered the most difficult polysyllabic pinyin and can basically spell it freely.

　　"I can understand the anxiety of parents who are afraid that their children can’t keep up with the start of school, but every teacher will prepare lessons according to the progress of the class before class. Such advanced learning will disrupt the teacher’s teaching plan." Teacher Jiang said helplessly. In her opinion, such advanced learning is not necessarily good for children.

　　"In class, I will abide by the barrel principle and take students who have not mastered pinyin as the standard. I will not give up those who have not learned because most people have learned it." Teacher Jiang said. Moreover, during her home visit, she found that many students’ pronunciation was not standard when they were receiving off-campus training because the teacher didn’t teach them seriously. After all, Pinyin is the most basic thing in Chinese learning. If there are mistakes at the beginning, it will be more difficult to correct them later, which will also have a negative impact on children’s future study.

　　After discovering this problem, Mr. Jiang was busy again, and the lesson plans that had been prepared for more than half a month needed to be readjusted.

　　"In the past, preparing lessons was based on zero-based children. Now we need to redesign the way of class according to the differences in students’ learning level." Teacher Jiang said. In the future teaching, she will pay more attention to students with zero starting point and cultivate their interest in learning as soon as possible. For those children who have learned pinyin, she will pay attention to their learning methods and spelling methods, and get rid of some incorrect places, so that they can apply pinyin to Chinese learning as soon as possible.

　　"You can also let the children who have learned Pinyin study with other children to form a good learning atmosphere." Teacher Jiang said. (Reporter Jianwei Liang correspondent Chen Hongcheng)

The 20th Charming Campus National Campus Spring Festival Gala opened.

　　Build a dream for the future and speak for it. The 20th National Campus Spring Festival Gala, co-sponsored by the China Literature and Art Foundation and the Office of the China Care for the Next Generation Working Committee, was held in Beijing on January 14th — It was held in Beijing on the 16th, attracting more than 2,000 children from all over the country who love art performances to come to Beijing for performances. At the same time, the National Campus Spring Festival Gala was held in Shanghai on January 16th — On the 17th, it was held in Shanghai at the same time, and children in the two places joined hands to celebrate the Spring Festival.

　　According to reports, the theme of this activity is "Starting from Dreams", which consists of five sections: opening ceremony, language special, variety special, original special and art tour. Create a happy and peaceful New Year’s party atmosphere through excellent campus literary and artistic works exhibition and emotional interaction between teachers and students, and help children realize their dreams through aesthetic education, bloom their youth and set out for their dreams again.

　　At the beginning of the opening ceremony, 40 colorful flags of the charming campus opened brilliantly. With the singing of "We are all dream catchers", all the participating teams dressed in representative colorful costumes, holding flags, dolls, bouquets, dance fans, etc. with their own characteristics, entered the Century Pavilion in the form of carnival. They enthusiastically waved their hands at the camera and the audience cheered. The mascots of the charming campus "Charm" and "Force" made their first public appearance and interacted with the audience cordially.

　　Haixia Guo, the founder of Charming Campus, said that in the past 20 years, Charming Campus has been running in its persistence and love every day, thanking the motherland and the times, allowing aesthetic education to infiltrate the soul and making art blossom everywhere. More than 10 pioneers of brand influence art education, as representatives, sent their sincere wishes to the 20th birthday of Charming Campus. Zhang Wei, the representative of the National Youth Language Performing Arts Evaluation Practice Base, and Lan Jiahuan, the representative of the China Art Education Demonstration Base, came to the stage to tell the story of realizing dreams and helping them.

　　At the opening ceremony, the host, Sister Moon, sang "We Are Flowers", and the cheerful song sang the vigor and vitality of children in the new era; Singer Xu Ziwei and Chen Yuxiao sang "You raised me to grow up and I grew old with you", which touched everyone on the scene; Lv Wei, a young singer, sang My People，My Country with the audience. The flying national flag reflected the whole venue and wished the great motherland prosperity together. A touching song, a jubilant dance, and a carefully arranged link make the scene climax again and again.

　　On the 16th, a special language performance with professional characteristics went smoothly. Children expressed their love in language, telling the long history and profoundness of Chinese culture, telling the story of China, spreading China culture and establishing the image of China. The beautiful variety shows show the spiritual connotation of traditional culture through songs, dances, languages, instrumental music, dramas and other colorful art forms. At the quality-oriented original special session, the original campus products with profound thoughts, exquisite art and excellent production are competing to bloom.

　　Liu Yan, a professor at Beijing Dance Academy and a young dancer, brought a hand dance performance and told the charm of classical dance through fingertip art. The audience reached out their hands to learn to imitate. Zhu Han, a teacher of the Dance Drama Department of the Central Academy of Drama and a guest dancer in the film Fanghua, recreated the dance in the play and interacted enthusiastically with the audience.

　　After the performance, children went to China Puppet Theatre, National Grand Theatre, science and technology hall, Forbidden City, Great Wall, Bird’s Nest and other places in batches for study tours, which promoted the development of children’s aesthetic education in the new era and the continuous improvement of their literacy in all aspects, so that they could grow into all-round socialist builders and successors in the new era.

　　It is reported that this activity was undertaken by the Organizing Committee of Charming Campus Activities and the Campus Culture Special Fund of China Literature and Art Foundation, and nearly 100 outstanding programs were performed. During the whole activity, 5G technology was used to conduct ultra-high-definition live broadcast on platforms such as iQiyi, Billie Billie, Sina Weibo, etc. At the same time, a photo live broadcast channel was specially set up, and AI face recognition technology was used. One-click intelligent recognition search belongs to the exclusive memory of participating teachers and students.

Tengshi N9 declaration information exposure vehicle length is over 5m 2 and wheelbase is over 3m 1.

After the flagship of MPV and sedan, the flagship of brand SUV is coming. After many spy photos were exposed, Tengshi N9 boarded the latest new car declaration catalogue of the Ministry of Industry and Information Technology.

As can be seen from the declaration, the overall design of Tengshi N9 is still very imposing, and the closed front face is not monotonous. There are C-shaped decorations on both sides of the front of the car, and a trapezoidal air inlet with a small area is left at the bottom of the front bumper. The side lines of the car body are relatively straight, but there is a curve that fits the wheel arch before and after, which makes the huge car body more harmonious. The rear part of the car is designed to be relatively full, and the taillights and high-position brake lights are designed in long strips, but they are not connected through.

Of course, there are different opinions about the appearance of Tengshi N9, but as a flagship model, it is not a bad thing to be more mature and stable. Moreover, the electronic exterior rearview mirror and the lidar on the roof highlight the scientific and technological attributes.

In addition, the detailed body dimensions are provided in the application information. The length, width and height of Tengshi N9 are 5258mm/2030mm/1830mm respectively, and the wheelbase reaches 3125mm, which is at the same level as that of Hehe. However, the curb weight of Tengshi N9 exceeds 3.1 tons, which is much heavier than that of the M9 and the ideal L9. The declared model adopts a six-seat layout.

In terms of power, Tengshi N9 will be equipped with a hybrid system consisting of 2.0T engine and 3 motors, in which the maximum power of the engine is 152kW, the maximum power of the front motor is 200kW, and the maximum power of the two rear motors is 240kW respectively. Therefore, although Tengshi N9 has a huge body, its dynamic performance is also very strong, and its maximum speed can reach 230 km/h. In addition, Tengshi N9 will be equipped with a group of 46.992kWh, with a pure battery life of 165km.

Zhao Changjiang, general manager of Tengshi Sales Division, once said on social media that Tengshi N9 will be an SUV that peers can’t catch up with in five years. Therefore, in addition to the oversized body size and easy three-way technology, Tengshi N9 may have more functions and configurations worth looking forward to.

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