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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)

　　"In the next decade, the scientific and technological work in colleges and universities will achieve another leap, and it is far from enough to answer the questions of the times of marching into the forefront of world science and technology, serving the country’s major strategic needs, and serving the high-quality development of the economy and society." On July 19th, at the press conference of the Ministry of Education introducing the reform and development effect of science and technology innovation in colleges and universities in the past ten years, Lei Chaozi, director of the Department of Science, Technology and Information Technology of the Ministry of Education, pointed out that the Ministry of Education will focus on strengthening organized scientific research, accelerate the building of national strategic scientific and technological strength, and provide strong support for the construction of important talent centers and innovative highlands in the world and the self-reliance of high-level science and technology.

　　Since the 18th National Congress of the Communist Party of China, as an important part of the national innovation system, colleges and universities have effectively supported the development of education, science and technology, economy and society in China. One of the highlights is organized scientific research.

　　Lei Chaozi explained that from the guiding ideology, organized scientific research is to aim at the international scientific and technological frontier and the major needs of the country, and to change what I wanted and could do in the past into what the country needs me to do. Around the "four orientations", organize major tasks, build a large platform according to the needs of the tasks, build a large team based on the large platform, and continue to tackle key problems for a long time. Its fundamental purpose is to achieve continuous major original breakthroughs in basic research and lay a solid foundation for building a strong country in science and technology; Technological innovation should truly meet the national strategic needs, make up shortcomings and forge long boards, enhance the core competitiveness of China’s industrial development, and support high-quality economic and social development.

　　For example, Rong Zeng, vice president of Tsinghua University, said that the Institute of Nuclear Energy and New Energy Technology of the school has always adhered to the scientific research organization model of "tackling key problems by big teams and crossing disciplines". After more than 30 years of hard work by three generations and hundreds of scientists, the world’s first intrinsically safe modular high-temperature gas-cooled reactor nuclear power plant jointly developed and built with China Huaneng and China National Nuclear Corporation was connected to the grid for power generation in December last year, which realized the leap from "running with" to "leading" in this field. Professor Tsinghua University Lu Xinchun’s team has been deeply involved in the field of chemical mechanical polishing technology for a long time. The company whose scientific research results have been transformed is the only high-end semiconductor equipment manufacturer in China that can provide 12-inch CMP commercial models, breaking the monopoly of international giants in this field for decades.

　　After the outbreak of COVID-19, Tsinghua University quickly organized and set up 18 scientific research and anti-epidemic commandos, and achieved many achievements. China’s first anti-Covid-19 antibody drug successfully developed by Professor Zhang Linqi’s team has been approved by National Medical Products Administration for emergency listing; The mobile laboratory for nucleic acid detection developed by Academician Cheng Jing can complete the sample detection within 45 minutes; Academician Rao Zihe discovered and reconstructed the complete form of Covid-19 transcription and replication machine for the first time in the world, which provided key support for developing broad-spectrum anti-Covid-19 drugs.

　　Sun Qingwei, vice president of Peking University, also said that the school has made great efforts to guide scholars to focus on practical problems facing economic and social development and national security. A number of teams aim at national needs to promote innovative research in the fields of graphene material preparation, photoelectric device devices, gallium nitride semiconductors, high-end medical equipment, biological breeding of wheat and fruits and vegetables, and digital economy. Academician Mei Hong’s team invented the "subversive" black box interoperability technology in the key core technologies of big data fusion; Academician Gao Wen’s team has established an international standard for China’s independent intellectual property rights in the field of ultra-high definition video coding and decoding. "Strengthening organized scientific research is the top priority in Peking University’s scientific and technological innovation work." Sun Qingwei said.

　　Lei Chaozi pointed out that in the next step, organized scientific research in colleges and universities should make efforts to achieve major breakthroughs in original innovation, to overcome the basic theory and key technologies of the "stuck neck" problem, to serve the national regional innovation and development strategy, and to enhance the core competitiveness of industrial development, so as to realize the transformation and upgrading of scientific and technological work in colleges and universities. (Science and Technology Daily, Beijing, July 19 th, by our reporter Zhang Galen)

　　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)

abstract:

Domestically, yesterday, heavy rain or heavy rain occurred in parts of Beijing-Tianjin-Hebei, Henan, Shanxi, Shandong and other places, and local heavy rain occurred. It is expected that in the next three days, Beijing-Tianjin-Hebei, Shandong, Shanxi and other places will have high risk of rainstorm disasters, and pay attention to possible flash floods, geological disasters, urban and rural waterlogging and strong convection hazards.

Globally, in the past 24 hours, heavy rainfall occurred in central India and other places, and high temperatures continued in southern Europe and the southern United States. In the next three days, there will be heavy rainfall in central and southern India, and the high temperature in the United States and Mexico will continue.

I. Domestic weather conditions

1. Reality

From 08: 00 to 06: 00 yesterday, there were heavy rains or heavy rains in parts of southern Beijing, southern Tianjin, central and southern Hebei, central and northern Henan, southeastern Shanxi, western Shandong, eastern Liaoning and southwestern Anhui, southern Hubei, coastal Zhejiang, northwestern Fujian and coastal Guangdong, and heavy rains (250-350 mm) in Shijiazhuang, Xingtai, Handan, Henan Xinxiang and other places, Xingtai, Hebei. The maximum hourly rainfall in some of the above areas is 40 ~ 90 mm, and the local areas in Yichang, Hubei and Guangzhou, Guangdong are 100 ~ 117 mm; In addition, thunderstorms and strong winds occurred in Heilongjiang, Shandong, Anhui, Zhejiang, Fujian and other places, and hail occurred in Shandong.

2. Key weather forecast

(1) There are heavy rainfall and strong convective weather in Beijing, Tianjin and Hebei.

From July 30 to 31, there were heavy rains in northern Henan, western Shandong, Hebei, central and eastern Shanxi, Beijing, Tianjin and central Inner Mongolia, among which there were heavy rains in parts of eastern Shanxi, central and southern Hebei, Beijing and western Tianjin, and heavy rains in parts of mountainous areas in central and southern Hebei and southern Beijing, accompanied by strong convective weather such as short-term heavy precipitation and thunderstorms.

It is estimated that there will be heavy rains in Hebei, Beijing, Tianjin, central and eastern Shanxi, northern Henan, central and western Shandong from 08: 00 on July 30 to 08: 00 on July 31, among which there will be heavy rains in parts of central and southern Hebei, central and southern Beijing, western Tianjin, eastern Shanxi and other places, and heavy rains (250-400 mm) in parts of central Hebei and southwestern Beijing. There is heavy rain or rainstorm in parts of central Anhui, eastern and southern Hubei, northern Hunan, northern Guizhou, southwestern Yunnan and northern Jilin (see Figure 1). Some of the above areas are accompanied by short-term heavy rainfall (the maximum hourly rainfall is 30-70 mm, and the local area can exceed 100 mm). Some areas in southeastern Heilongjiang, central Jilin, central and southern Hebei, southern Beijing, Tianjin, central and southwestern Shandong, southern and northeastern Henan, western and northeastern Anhui, central and northern Jiangsu, eastern Hubei, northwestern Jiangxi, and western Zhejiang will have 8-10 grades and local areas. The Central Meteorological Observatory continued to issue red rainstorm warning and yellow severe convective weather warning at 06: 00 on July 30.

Fig. 1 Forecast Map of Heavy Rainfall in China (08: 00 on July 30-08: 00 on July 31)

Figure 2 National Thunderstorm Gale or Hail Warning (08: 00 on July 30-08: 00 on July 31)

In addition, due to the influence of Typhoon Kanu, there will be strong wind and rain in the southeast sea and coastal areas from August 1 to 4, and there will be heavy rain in Jiangnan and eastern South China, and heavy rain in the local area.

From August 2 nd to 5 th, there was a lot of rain in the northeast, some of which were moderate to heavy rain, and there was heavy rain or heavy rain in the local area.

In the next 10 days, there will be another typhoon in the Pacific Northwest.

Second, the global weather situation

1. Reality

(1) Heavy rainfall occurred in central India and other places.

In the past 24 hours, there have been moderate to heavy rains in the southwest of the Far East, Japan, the Philippine Islands, the northern and southern coastal areas of Indo-China Peninsula, central India, south-central Pakistan, Ukraine, western Russia, the Great Caucasus, the Great Lakes region, the eastern United States, and south-central Mexico, with local heavy rains to heavy rains.

(2) The continuous high temperature in southern Europe and the southern United States.

In northern Africa, West Asia, southwestern Central Asia, central Pakistan, southwestern Russia, south-central United States, northern Mexico and other places, high temperature weather above 37℃ occurred, and the daily maximum temperature in some areas exceeded 42℃, among which the maximum temperature in southern Arizona in the United States exceeded 45℃.

2. Key weather forecast

(1) There is heavy rainfall in central and southern India.

Affected by the vortex and the southwest monsoon, there are moderate to heavy rains in the south-central Indian Peninsula, western and southern Myanmar, among which there are heavy rains in the central and southwest coastal areas of the Indian Peninsula and the southeast coastal areas of Myanmar.

(2) The high temperature in America, Mexico and other places will continue.

Affected by the unusually strong subtropical high belt, the hot weather in the central and southern United States, central and northern Mexico, northern Africa, West Asia, central and southern Central Asia, and northwestern South Asia will continue in the next three days. The highest temperature in these areas is generally above 37 C, and the local highest temperature can reach above 45 C. There are still high temperatures above 35℃ in central and southern Spain, Sardinia, Italy, Sicily and Greece.

Third, the domestic specific forecast for the next three days

From 08: 00 on July 30 to 08: 00 on July 31, there were heavy rains in Hebei, Beijing, Tianjin, central and eastern Shanxi, northern Henan, and central and western Shandong. Among them, there were heavy rains in parts of central and southern Hebei, central and southern Beijing, western Tianjin, and eastern Shanxi, and heavy rains (250-400 mm) in parts of central Hebei and southwestern Beijing. There is heavy rain or rainstorm in parts of central Anhui, eastern and southern Hubei, northern Hunan, northern Guizhou, southwestern Yunnan and northern Jilin (see Figure 3). There are 4 ~ 6 winds in parts of central and eastern North China, eastern Huanghuai and northeastern Jiangnan.

Figure 3 National Precipitation Forecast Chart (08: 00 on July 30th-08: 00 on July 31st)

From 08: 00 on July 31 to 08: 00 on August 1, there were heavy rainstorms in parts of south-central Inner Mongolia, most of Hebei, Beijing, Tianjin, northern and central Henan, southern Hubei, northern Hunan and southern Sichuan Basin, among which there were heavy rainstorms (100-160 mm) in central Hebei and southwestern Beijing (see Figure 4). There are 4 ~ 6 winds in parts of Liaodong Peninsula, Shandong Peninsula and northeastern Jiangnan. In the southern part of the East China Sea, there are 6 ~ 7 northeast winds with 8 gusts and 10 ~ 11 rotating winds with 12 gusts.

Figure 4 National Precipitation Forecast Chart (08: 00 on July 31st-08: 00 on August 1st)

From 08: 00 on August 1 to 08: 00 on August 2, there were moderate to heavy rains in parts of central Inner Mongolia, central Jilin, western Guizhou, western Guangxi, Yunnan and eastern Zhejiang, with local heavy rain (50-65 mm) (see Figure 5). There are 4 ~ 6 winds in parts of Shandong Peninsula and eastern Jiangnan, and the winds in parts of eastern Zhejiang can reach more than 7. In the south of the East China Sea, there are 12-13 winds with gusts of 14, and in the north of the East China Sea, there are 8-10 winds with gusts of 11.

Figure 5 National Precipitation Forecast Chart (08: 00 August 1-08: 00 August 2)

(Editor: Su Jessie)

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.

Chang Kai, a takeaway rider, recently changed his post. He parked the takeaway electric car, left his small home, dragged a big suitcase full of laundry, and joined the "Youth Guarantee Commando" in Chaoyang District to become a volunteer. In a warehouse in Sunhe Township, he skillfully packed protective clothing, masks, gloves and other epidemic prevention materials and distributed them to the "Dabai" who worked in the control area.

Since the current epidemic in Beijing, there are still many volunteers from all walks of life like Chang Kai fighting in the front line of epidemic prevention, including social workers, real estate agents, take-away riders, and courier brothers … The reporter learned from the Chaoyang Youth League Committee that three youth epidemic prevention volunteer service teams have been set up, including the youth insurance commando team, the community bayonet supervision service team and the migrant volunteer service team. As of November 17th, Chaoyang Youth League Committee recruited 979 young volunteers from 26 volunteer teams to participate in epidemic prevention and control through socialization of various youth communities.

Chang Kai, a takeaway rider, works as a volunteer at a material support point in Sunhe Township, Chaoyang District. Photo courtesy of respondents

Material support point: takeaway riders should contribute to epidemic prevention.

Chang Kai has a WeChat group named "Beautiful Chaoyang Knight". The group friends are all courier brothers and takeaway riders from Chaoyang District who have won the title of "Beautiful Chaoyang Knight". The group often forwards notices of public welfare activities, and Chang Kai always takes an enthusiastic part as long as he has time.

On the evening of November 10th, Chang Kai suddenly saw a message in the group that Chaoyang Youth League Committee had called volunteers to support this round of epidemic prevention and control. "In the last round of the epidemic, I also signed up as a volunteer. At that time, I was a’ big white’ in a community in Wangjing Street. So when I saw the recruitment notice on the evening of the 10 th, I signed up without hesitation. " In 2018, Chang Kai came to Beijing to become a takeaway rider. In his view, the rider’s specialty is that he is very familiar with the streets and lanes, and the efficiency of receiving goods is high. "It is indispensable to participate in the prevention and control of the epidemic. This is my specialty. I must sign up."

Simply packed up and changed clothes. At 2 pm on November 11th, Chang Kai and several other volunteers arrived at the material support point. This is a warehouse temporarily converted from a gym in Sunhe Township, Chaoyang District. Volunteers divide the gym into No.1 warehouse and No.2 warehouse according to the area, in which No.1 warehouse stores protective clothing, and No.2 warehouse stores masks, screens, gloves, etc. These materials are neatly stacked on the wall according to different categories. Loudspeakers are also stored on the shelves of the warehouse, which are also good helpers for "Dabai" to work in the control area.

Every morning is the busiest time for volunteers. They have to distribute the materials to Dabai in the control area according to the quantity on the form. In order to avoid mistakes in busy work and improve the efficiency of distribution, Chang Kai and his colleagues divide the work of "dispatching". "For example, I am responsible for distributing protective clothing, and the other two colleagues are responsible for distributing masks and gloves, which is fast and not easy to make mistakes." Chang Kai said.

After the "morning rush", the pace of work of volunteers slowed down. However, Chang Kai, who is restless, always goes to the volunteer leader of the security point for work, either cleaning the warehouse again or checking the inventory with the material list. During the epidemic, many caring units donated epidemic prevention materials, which also need volunteers to classify and transport them to the warehouse for storage.

"If doctors and nurses who directly face infected people are regarded as the’ first post’ of epidemic prevention and the’ big white’ of the community is the’ second post’, then our volunteers are the’ third post’. Each of us is like a link in the’ chain’, and no one can drop the chain, but we must twist it into a strength and rush forward. " From November 11th to today, Chang Kai has been working in the security point for a week. "I will continue to be a volunteer. I want everyone to know that our takeaway riders will not only deliver food, but also do good public welfare and contribute to epidemic prevention."

In the closed control area of Chaoyang District, there are also volunteers. Guo Lingjiang, deputy secretary of the Communist Youth League Committee of non-public enterprises, has participated in many public welfare emergency distribution activities. In this epidemic, he called on riders to join the volunteer team to provide material distribution support for the closed control area of Anzhen Street.

It was not easy at first, Guo Lingjiang told reporters, "Some riders were unable to take orders because of the pop-up window, and there was a shortage of capacity." What if there are not enough hands? Guo Lingjiang’s company is a take-away food delivery enterprise, so he held an emergency meeting with his colleagues to find ways to optimize the transportation capacity and deploy human support from other areas such as Haidian. In the end, it not only provides voluntary service for material distribution in the closed control area, but also ensures the daily distribution needs of citizens.

At present, Guo Lingjiang has called on more than 50 young people to join the volunteer team. "We are ready, and we will rush up as soon as necessary." Guo Lingjiang said.

"44th Street": Do a good job of telephone flow, and don’t add chaos to the community.

There are 43 townships in Chaoyang District, but there is a "44th Street" in Baiziwan. In this special "street", about 50 volunteers form a youth volunteer service team by telephone to provide strong support for epidemic prevention and control in townships.

Speaking of the origin of the name "44th Street", Yang Jie, a social worker of the Community Youth Exchange, said with a smile: "We 50 people come from 43 townships in the whole district, so we simply named our service team" 44th Street ".

Volunteer Yang Jie (right) and her colleagues are making a phone call. Photo courtesy of respondents

In order to do a good job in telephone streaming, Chaoyang Communist Youth League set up a hotline call platform for 48 hours, giving full play to the advantages of social mobilization, coordinating the Youth League Committee of Chaoyang District Lawyers Association to provide site and workstation support, and coordinating the enterprises where the Youth League Committee members are located to set up a call center platform. The second-level non-governmental organizations also sent volunteers a public lunch.

Telephone traffic control is an important part of epidemic prevention and control. Yang Jie is an old traffic control volunteer, so in this volunteer service, she is mainly responsible for teaching the technical essentials of telephone traffic control to "novices" and filling in the traffic control form accurately as required.

Making a phone call seems to be a simple job, but it requires patience and meticulousness. Yang Jie said: "In the list we got, some people may need to stay at home for seven days, while others may need three days and two inspections. The situation is not the same. Moreover, some people in the form don’t have addresses in Beijing, so we have to ask carefully when doing the flow adjustment to confirm their specific addresses in Beijing, so that we can accurately feedback to the community. " Recently, the volunteer service team has increased its manpower, and everyone is divided into four groups to carry out telephone streaming. Every day, when colleagues finish the task of flow adjustment, Yang Jie always checks these lists again to see if there are any omissions.

Yang Jie worked as a volunteer in Chaoyang District CDC before. Compared with the last experience, she felt that the pressure was even greater this time. "The last time I worked with the teachers of the Center for Disease Control and Prevention, I could ask questions at any time. I always felt that the teachers could give us the bottom, and I was practical. This time, I am the team leader and also responsible for training. Without a disease control teacher around, I dare not have any omissions in my work. We must not add chaos to the epidemic prevention and control in the streets and townships because our work is not in place. "

The reporter learned from the Chaoyang Youth League Committee that the volunteers came from many caring enterprises in Chaoyang District, as well as universities such as Beijing Information Science and Technology University, university of international business and economics and beijing international studies university. In order to strictly abide by the epidemic prevention regulations of colleges and universities, college volunteers are currently conducting online volunteer service.

Community bayonet: real estate agents become health code inspectors, and residents give thumbs up.

These days, real estate agent Ding Guanghui runs the community more frequently.

"When I don’t take customers to see the house, I often run to the community, and I have to check whether the QR code of the bayonet meets the requirements." Ding Guanghui told reporters that after the current epidemic, he signed up for the "community bayonet supervision service team", whose main task is to check whether the community has achieved "one bite and one yard".

Volunteer Ding Guanghui is checking whether the "one bite and one yard" in the community is standardized. Photo courtesy of respondents

Before taking up his post, Ding Guanghui participated in online volunteer service training and realized the importance of "one bite and one yard" for accurate epidemic prevention and control. Therefore, after becoming a volunteer, Ding Guanghui regularly goes to the bayonet of each community, scans the QR code of the bayonet with his own health treasure to check whether it is normal or not, and then uploads the scanned code results to the information platform through the mobile phone.

Real estate agents and many residents in the community are old friends. When Ding Guanghui came to "scan the code", the neighbors in the neighborhood could not help but exchange greetings. Familiar uncles and aunts gave him thumbs up, and residents who used to buy real estate through Ding Guanghui even pulled him to chat. Ding Guanghui is very happy, because this job has been understood and cooperated by the residents, and he is more energetic as a volunteer.

Beijing News reporter Wu Tingting

Editor Liu Mengjie proofreads Chen Yanyan.

According to the data of comprehensive transportation Spring Festival travel rush working class in 2025, the cross-regional personnel flow of the whole society is expected to be 286.54 million today (January 30th). Among them, the railway passenger traffic is expected to be 9.5 million passengers, and 317 additional passenger trains are planned. Harbin Bureau and Hohhot Bureau of China Railway have specially set up ice and snow tourism service posts, provided green security check channels for passengers traveling with snow gear, and opened bus loops directly to ski resorts to help develop the ice and snow economy.

Today, the turnover of highway personnel is estimated to be 273.57 million person-times, a substantial increase compared with yesterday. The tidal characteristics of highway network flow are obvious, and 9-12 o’clock and 14-19 o’clock are prone to congestion. Popular tourist cities have great pressure on traffic security. Public security traffic control departments and other departments have strengthened the guidance of unblocking and ensuring smoothness in key sections. With the increase of vehicles in high-speed charging stations, transportation, power supply and other departments focus on strengthening the charging service guarantee in expressway service areas to meet the charging demand during peak hours.

Today, the number of passengers sent by waterway and civil aviation is estimated to be 1.2 million and 2.27 million respectively, which is a significant increase compared with yesterday.

　　"Touching people, don’t worry about love first." On the occasion of the annual Spring Festival, overseas Chinese who are far away from home pay a New Year call to the people of the whole country through this newspaper, congratulating China on its "Thirteenth Five-Year Plan" and all the work of the Party and the country on a new level, and wishing the people of the whole country happiness in the new year, China more prosperity and new achievements in the great journey of building a well-off society in an all-round way.

　　Asia — —

　　I sincerely hope that the development path of China will be wider and wider.

　　New Year greetings to people of all ethnic groups in China and overseas Chinese at home and abroad. I wish you all a good year of the Rooster and good health! In the past year, under the leadership of Chairman of the Supreme Leader, China has made all-round progress in economy, politics, culture, society and ecological civilization, and its development achievements are remarkable. The "Belt and Road" construction has achieved fruitful results, and countries along the route have benefited a lot, and China’s international status has been continuously improved. Overseas Chinese feel the same way about every progress made in China, and sincerely hope that China will continue to make new and greater achievements.

　　— — Huang Bin, Director of Chinese Department of Kaitai Research Center in Thailand.

　　Happy New Year to the people of China, and wish you all good luck, health and happiness in the New Year! Under the correct leadership of the Supreme Leader, China is developing with each passing day. Overseas Chinese are full of confidence in the future of their ancestral home country, and sincerely hope that the road of China’s development will be wider and wider!

　　The "One Belt, One Road" initiative put forward by the Chairman of the Supreme Leader is conducive to promoting the common development of Southeast Asian countries and jointly building a community of human destiny. The rise of China has shown the image of a great country to the whole world and provided a rare opportunity for the development of neighboring countries. Since the second half of last year, the relationship between the Philippines and China has achieved a "gorgeous turn" and the cooperation between the two countries has become increasingly close. I hope that the Philippines can take the "Belt and Road" development express train in time and become an important partner along the route to realize its rapid development.

　　— — Zhang Zhaohe, Chairman of the Philippine Chinese Chamber of Commerce.

　　Africa — —

　　The locomotive function of China economy is becoming more and more obvious.

　　The past year has been a historic year in the development of China-Egypt relations. The visit of the Supreme Leader to Egypt has pushed China-Egypt cooperation to a new height. I have worked hard in Egypt for many years, and I have personally felt the increasing pragmatic cooperation between China and Egypt in various fields, and I have also felt that China is becoming stronger and richer. On the occasion of the arrival of the Spring Festival, I wish the people of the whole country a happy New Year, and wish China prosperity and new achievements in the great journey of building a well-off society in an all-round way. Let’s roll up our sleeves and work hard, and life will be better in the future!

　　— — Chen Jiannan, President of Egypt China Peaceful Reunification Promotion Association and Egyptian Chinese Friendship Council

　　Although it’s a long way, overseas Chinese in South Africa are connected with their native countries. We hope that China will develop better and better. As President Xi said, we will roll up our sleeves and make more contributions to building a well-off society in an all-round way in the new year. Overseas Chinese in South Africa will continue to safeguard the overall situation of China-South Africa friendship and cooperation. In 2016, the global economy is sluggish, and the locomotive role of China’s economy is becoming more and more obvious, which is true for the South African economy and more important for overseas Chinese in South Africa. Happy new year to the people of the whole country, and wish you all a happy and healthy New Year!

　　— — Yan Hai, President of Shanghai Chamber of Commerce and Industry in Southern Africa

　　Europe — —

　　The development of China has given us great confidence and enthusiasm.

　　In 2016, the motherland made great achievements. The G-20 Hangzhou Summit was held, the China women’s volleyball team regained the Olympic champion podium, and the successful launch of Tiangong-2 made overseas students and overseas Chinese feel excited and happy, and Russian friends around them also congratulated them. The development of the motherland has given us great confidence and enthusiasm. More and more Russian friends let their children and grandchildren learn Chinese, shop on Taobao and travel to China.

　　This year, I helped the Russian Ministry of Education and Science to organize summer camps for young people of the two countries. The exchanges between young people of the two countries ignited the desire of the younger generation in Russia to learn more about China and planted seeds for the deepening of friendship between the two countries. I hope to continue to contribute to the development of bilateral relations in the new year. I wish the people of the motherland a happy New Year, the country is prosperous and the people are happy and healthy!

　　— — Yin Bin, Vice Chairman of Russian Federation of College Graduates

　　Chairman Supreme Leader met with overseas Chinese representatives during his state visit to Germany in 2014, and I had the honor to attend. In his speech, President Xi encouraged overseas Chinese living in Germany to cherish their motherland and integrate into the local area. For more than two years, we have consciously paid more attention to the two-way nature of public diplomacy in our activities, and listened to others’ voices while making our own "voices".

　　This year marks the 45th anniversary of the establishment of diplomatic relations between China and Germany. China will usher in the 19th National Congress of the Communist Party of China, and Germany will host the G20 Summit, and a series of high-level visits will be conducted between the two countries. On the occasion of the Chinese New Year in the Year of the Rooster, I would like to extend my best wishes to the people of all ethnic groups in China, and wish China prosperity, prosperity and national security! I wish people of all ethnic groups a happy holiday and all the best!

　　— — Yang Qianghua, President of German Overseas Chinese Public Diplomacy Association

　　The most exciting moment for me in 2016 is to welcome the Chairman of the Supreme Leader to visit Serbia. President Xi is affable and earnest, which adds strength to us overseas Chinese who start businesses in foreign countries. The Belt and Road Initiative proposed by President Xi has paved the way for boosting the world economy. Many countries in Europe and Asia have actively responded to the "Belt and Road Initiative" and set off a new round of "China fever" from the official to the private sector, and the friendly and cooperative relations with China have rapidly warmed up.

　　As a post-1970s generation, I witnessed the great changes in China from weak to strong and from poor to rich after the reform and opening up. As an old overseas Chinese who has been wandering overseas for more than 20 years, I personally feel the great glory that China’s prosperity has brought to overseas travelers. On the occasion of the Spring Festival, I sincerely wish China prosperity and the people of all ethnic groups in China happiness and well-being!

　　— — Jin Dongrong, President of Serbian Federation of Chinese and Overseas Chinese Associations

　　America — —

　　Chinese civilization has set an example for the world.

　　At the beginning of the new year, Vientiane is renewed. At this festive moment, I would like to extend my New Year greetings to the people of the whole country and wish my relatives in my hometown happiness, good health and well-being! China’s 5,000-year-old civilization and rapid development achievements in recent decades have set an example for the world. President Xi’s initiative to build a community of human destiny is worth pondering by the world.

　　China and the United States are the most influential and appealing countries in the world, and they have unshirkable responsibilities and responsibilities for international affairs and human welfare. Overseas Chinese in the United States all hope that China and the United States can live in peace and respect each other and jointly shoulder the important mission of world peace and development.

　　— — Liu Ziyang, American Overseas Chinese and Vice President of the US-China Guangdong Chamber of Commerce.

　　The past year was a year in which the Chinese nation made great efforts to realize the Chinese dream. Under the leadership of the CPC Central Committee with the Supreme Leader at the core, the people of China have made great efforts to tackle problems and made brilliant achievements in various fields, and overseas Chinese are extremely proud of this.

　　President Xi’s recent speech at the annual meeting of the Davos Forum was extremely inspiring! After listening to President Xi’s speech, I said to my friend: I feel proud to be Chinese again! The golden rooster will bring good news, more exciting news and more abundant harvest will come in the Year of the Rooster. Let’s meet the wonderful time with all our energy!

　　— — Zhao Bingchi, President of Canadian Canadian Canadian China Unification Promotion Association and President of Ottawa Chinese Federation.

　　2016 is a leap year for China and Canada. Within a month, the two prime ministers exchanged visits, which opened a new chapter in Sino-Canadian relations. Our overseas Chinese in Canada are delighted with this. In 2016, parliament of canada recognized the Lunar New Year as a Canadian holiday, and we were excited about it from the first day of the lunar calendar to the fifteenth day of the lunar calendar.

　　I went to Shenzhen in 1979 to explore and witnessed the development of China. After 28 years in Canada, I witnessed the deepening of trade and economic relations between China and Canada, and also witnessed the contribution and development of overseas Chinese in Canada. I wish the people of the whole country a happy New Year and a continuous improvement in their living standards!

　　— — Lu Hongmin, Executive Chairman of Ottawa Federation of Chinese Associations

　　I have lived in Brazil for many years and witnessed the development of China-Pakistan friendship. After the reform and opening up, earth-shaking changes have taken place in China. Chairman of the Supreme Leader proposed the Belt and Road Initiative, so that more countries can benefit from China’s economic development.

　　As a Chinese, I have gained more respect overseas and feel very proud. Only when the country is rich can the people be strong. Thanks to the support provided by the powerful China for overseas Chinese, we will definitely make our own contribution to promoting cooperation and exchanges between China and the local area.

　　— — Yin Chuping, President of Brazil China Peaceful Reunification Promotion Association

　　Oceania — —

　　Vigorously carry forward the hardworking, brave, peaceful and friendly spirit of the Chinese nation.

　　During his visit to Australia in 2014, the Chairman of the Supreme Leader told overseas Chinese that China and Australia should give full play to their complementary economic advantages and deepen economic and trade cooperation. Today, the China-Australia FTA has been formally implemented for more than a year, and the trade between China and Australia has grown steadily, and the cooperation between the two countries in the fields of economic and trade exchanges and cultural exchanges has become closer.

　　The Spring Festival is an important festival of the Chinese nation, which embodies the virtues of attaching importance to family, affection and friends in China traditional culture. The vast number of overseas Chinese in Australia have vigorously promoted the excellent Chinese culture and traditions, as well as the hardworking, brave, peaceful and friendly spirit of the Chinese nation, which has won wide recognition and respect from Australian society and made outstanding contributions to the construction, development and prosperity of Australia.

　　On the occasion of the arrival of the Spring Festival, I wish my compatriots around the world good luck and all the best in the Spring Festival!

　　— — Huang Xiangmo, President of Australia China Peaceful Reunification Promotion Association

　　(Newspaper Bangkok, Cairo, Johannesburg, Moscow, Berlin, Brussels, new york, Ottawa, Rio de Janeiro and Canberra, January 27th, by reporters Zhang Zhiwen, Wang Yunsong, Li Zhiwei, Qu Song, Guan Kejiang, Ren Yan, Li Bingxin, Wu Yun, Wang Hailin and Bao Jie)

On March 16th, a train loaded with goods left Chengdu International Railway Port. Photo by Bai Guibin (Visual Sichuan)

● The import and export of private enterprises was 65.67 billion yuan, up 16.0% year-on-year, accounting for 46.2%.

● The number of inbound and outbound flights and China-Europe trains in the province increased by 25.4% and 61.0% respectively.

On March 14th, the reporter learned from Chengdu Customs that in the first two months, the total import and export value of goods trade in Sichuan was 142.21 billion yuan, ranking ninth in the country. Among them, exports were 97.51 billion yuan, up 1.4% year-on-year; Imports reached 44.70 billion yuan, a year-on-year decrease of 28.8%.

From the data changes, in the first two months, our province’s general trade surpassed processing trade and became the largest trade mode in the province, and the new trade format grew rapidly. Import and export by general trade amounted to 63.84 billion yuan, up 16.8% year-on-year, up 10.5 percentage points over the same period of last year.

From the perspective of market entities, private enterprises have become the largest trade entity in our province. In the first two months, the import and export of private enterprises in our province was 65.67 billion yuan, a year-on-year increase of 16.0%, accounting for 46.2%, accounting for more than that of foreign-funded enterprises.

From the perspective of major trading partners, ASEAN, the United States and the European Union remained the top three trading partners of our province in the first two months. The import and export of South Korea, Australia and Africa increased rapidly. Our province’s import and export to South Korea was 10.67 billion yuan, a year-on-year increase of 41.3%; Our province’s import and export to Australia was 9.45 billion yuan, a year-on-year increase of 1.7 times; Imports and exports to Africa reached 5.38 billion yuan, up 10.8% year-on-year.

From the perspective of cities and prefectures in the province, in the first two months, Chengdu imported and exported 115.05 billion yuan, accounting for 80.9% of the total foreign trade import and export value of our province in the same period; The year-on-year growth rates of imports and exports in Mianyang, Yibin and Deyang are all above 25%; The import and export of Dazhou, Suining, Ya ‘an and Bazhong all increased exponentially.

In terms of product categories, the export of labor-intensive products was 12.32 billion yuan, a year-on-year increase of 15.1%; The export of tablet computers was 11.14 billion yuan, a year-on-year increase of 9.3%; The export of household appliances was 1.91 billion yuan, a year-on-year increase of 74.2%. Imported all kinds of lithium battery materials were 7.84 billion yuan, a year-on-year increase of 4.7 times; Imported pulp was 770 million yuan, a year-on-year increase of 128.6%.

According to statistics, the logistics operation recovered steadily in the first two months. The number of inbound and outbound flights in the province and the number of trains in China and Europe increased by 25.4% and 61.0% respectively, and the vitality of foreign trade accelerated.(Reporter Chen Bihong)

On October 29th, the Fifth Plenary Session of the 19th Central Committee of communist party, China was successfully concluded in the golden autumn. The plenary session was presided over by the Political Bureau of the Central Committee. The General Secretary of the Central Committee and the Supreme Leader made an important speech.

Information dissemination trend chart of the Fifth Plenary Session of the 19th Central Committee

High-frequency words in the communiqué of the Fifth Plenary Session of the 19th Central Committee in communist party, China