Cctv news (Reporter Li Wenliang, Tang Shiying, Liu Chunyi, Chu Wei) October 11th — On the 13th, 2019 China International Digital Economy Expo was held in Shijiazhuang (Zhengding) International Convention and Exhibition Center. CCTV conducted a 5G+VR live broadcast of the opening ceremony and theme summit of the conference.　

　　This is the only national exhibition named digital economy in China. In May this year, with the approval of the CPC Central Committee and the State Council, the Ministry of Industry and Information Technology and the Hebei Provincial Government held an annual China International Digital Economy Expo.

　　Applying for hosting China International Digital Economy Expo is an important measure for Hebei Provincial Party Committee and Government to accelerate the development of digital economy and deepen the structural reform on the supply side. It is also an important content to actively adapt to the new requirements of opening up in the new era, build a national, international and high-standard economic exchange and cooperation platform, and realize innovation-driven and high-quality development.

　　Organizers said that the digital economy is an "accelerator" to promote the quality change, efficiency change and power change of economic development, and has become a new highland for countries all over the world to compete for development. Holding the China International Digital Economy Expo conforms to the general trend of the development of the world digital economy; In recent years, China has actively developed the digital economy and constantly explored new industries, new formats and new models. The digital economy has become a new engine to promote China’s high-quality development. Holding the China International Digital Economy Expo conforms to the general trend of high-quality development in China; At the same time, the holding of China International Digital Economy Expo also conforms to the general trend of building Hebei into a strong digital economy province. In recent years, Hebei has issued three-year action plans such as industrial transformation and upgrading, strategic emerging industry development and scientific and technological innovation, formulated policies and measures with high gold content, and made efforts to develop industries such as big data, cloud computing, new display, intelligent equipment and industrial Internet to accelerate the construction of a strong digital economy province. We have successively issued a series of policies and measures on accelerating the development of the digital economy, building a strong network, promoting information consumption, cultivating and developing integrated circuits and 5G, accelerating the cultivation and development of a new generation of information technology industries, and promoting the deep integration of the Internet, big data, artificial intelligence and the real economy. Digital government affairs, digital tourism, digital medical care, digital transportation and digital ecology have been accelerated, and the pace of transformation and upgrading has been accelerating.

　　In the era of big data, Hebei firmly grasped the historical window period and strategic opportunity period, and pressed the fast-forward button in promoting "digital industrialization and industrial digitalization". A digital economy stage with good foundation and broad prospects is opening to the whole world.

　　We will make every effort to create a digital economy event that is "leading domestically and first-class internationally". The theme of China International Digital Economy Expo in 2019 is "Digital Economy Leading High-quality Development", and we will adhere to the principle of "internationalization, specialization, high-end and industrialization", focusing on digital industrialization and industrial digitalization, attracting talents from the meeting, gathering wisdom and prospering with the meeting, and focusing on planning "one meeting, one exhibition, one salon, one meeting". —

　　"A moment" is the opening ceremony and theme summit. State leaders, relevant state ministries and commissions, leaders of sister provinces and cities, and a group of scientists, entrepreneurs, experts and scholars, platform organizations and media people with strong influence in the global digital economy are invited to attend the conference. Nobel Prize winners in economics, nearly 200 important international guests from more than 20 countries and international organizations, more than 20 academicians of the two academies, more than 150 industry leaders, and more than 80 well-known experts gathered together to discuss the digital economy.

　　"One exhibition" is a comprehensive exhibition. There are five exhibition areas, including theme exhibition hall, Beijing-Tianjin-Hebei collaborative and digital Hebei exhibition hall, new generation information technology exhibition hall, intelligent manufacturing and intelligent society exhibition hall and outdoor exhibition hall, covering an area of 50,000 square meters, with more than 500 enterprises participating. Among them, there are more than 180 leading enterprises in digital economy at home and abroad, including Siemens, Amazon, Dassault, Huawei and Baidu, accounting for 35% of the total number of exhibitors. Among them, there are Siemens Digital Twins, Amazon AWS, Ericsson Panoramic Live Broadcasting of Winter Olympics, China Electronics’ Fit CPU+ Kirin Operating System, China Electronics’ Perception of City+Data Centralization, Huawei’s 5G+ Kunpeng, Baidu’s Apollo Autopilot, Alibaba’s Digital Government and Tencent. There are also popular digital cultural products such as Aauto Quicker, Bili Bili, Himalayan and Migu Culture, and future products in many fields such as 5G, big data, artificial intelligence, Internet of Things, industrial internet, intelligent networked cars, intelligent robots and digital media complement each other. 338 exhibitors from Beijing-Tianjin-Hebei Collaborative and Digital Hebei Pavilion,More than 200 enterprises participated in the exhibition in 11 districts and cities in Hebei and xiong’an new area exhibition area. The Big Data Excellent Case Exhibition Area of the Ministry of Industry and Information Technology focuses on the outstanding products and application solutions of more than 100 big data "national teams".

　　"One Salon" means "Zhengding Night" digital economy theme salon. Co-organized by China Electronics Group, China Electronics Group and People’s Daily Online. Through the 3D holographic projection technology through history, digital technology+Yanzhao hero Zhao Yun and Changshan drums are alternately interpreted, which fully reflects the sense of science and technology and the sense of the future of Zhengding Night. A group of industry big coffees talk on the same stage about "digital economy boosting Hebei’s transformation and development", which makes Zhengding ancient city glow with the new charm of modern digital technology.

　　"One experience" is the intelligent networked automobile automatic driving experience activity. Great Wall Motor uses the most advanced sensing, planning and decision-making technologies to demonstrate fully autonomous autonomous self-driving and 5G driverless cars, and challenge many difficult self-driving scenarios. Huawei exhibited the "Huawei 5G China Tour" roadshow, showing Huawei’s latest 5G end-to-end solutions, 5G black technology and minimalist operation and maintenance business model. China Unicom exhibited the 5G "Dream Journey in Time and Space" fully immersive VR experience car, and experienced the 5G Mars exploration journey. The cloud network cooperated and was there, and felt the low latency and high speed brought by the 5G network, as well as the infinite scientific and technological charm brought by real-time computing and rendering in the cloud.

　　The "First Competition" is the World University E-sports Championship and the National University E-sports League. Players from 10 countries including Brazil, Mexico, the United States, Nigeria, Australia and South Korea have been selected in the early stage of the World University E-sports Championship to participate in the offline finals during the Zhengding Digital Expo. The National College E-sports League has participated in more than 900 colleges and universities this season, with more than 100,000 people directly participating in the competition. During the Zhengding Digital Expo, the national finals were organized, and 56 players from 12 colleges and universities were selected to compete for the e-sports championship.

　　"Three docking" means three industrial docking activities. Focusing on the promotion of "digital industrialization, digital industry", we held three industrial docking activities, such as the next-generation information technology industry matchmaking meeting, the "China Digital Dam" matchmaking meeting and the Hebei-Shenzhen industry matchmaking meeting, and signed a number of major cooperation projects around the development of 5G and next-generation information technology. At the same time, free project negotiation areas are arranged at the exhibition site and conference area to provide a relatively independent docking negotiation platform for exhibitors and participating guests.

　　"Multi-forum" is more than 10 parallel activities, such as the Smart Xiong ‘an Summit Forum. A group of academicians, experts and leading figures will have dialogues and exchanges around hot topics in the industry, such as Intelligent Xiong ‘an, 5G/ Internet of Everything, Industrial Internet and Intelligent Manufacturing, Next Generation Artificial Intelligence, Big Data+Cloud Computing, etc., and carry out ideological collisions to lead the development of the industry. At the same time, China Digital Economy committee of 100 Closed Meeting and Enterprise Digital Transformation Summit Forum will be held to offer suggestions and suggestions for accelerating the development of digital economy.

　　"Multi-release" means the release of a number of authoritative achievements. During the conference, Forbes China, China Information and Communication Research Institute, China Electronic Information Industry Development Research Institute and other units will release more than 10 research results, including Forbes Top 100 Global Digital Economy List, 2019 Global Digital Economy Development Report and 2019 China Digital Economy Index White Paper.

The Ministry of Ecology and Environment informed the media today about the quality of surface water and ambient air in June and January-June, 2020.

I. Surface water

(1) General situation

In June, among the surface water assessment sections in 1940 countries, the proportion of sections with excellent water quality (Class I-III) was 71.4%, up 0.6 percentage points year-on-year; The proportion of inferior V sections was 2.5%, down 2.9 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and total phosphorus.

Figure 1 Proportion of surface water quality categories in China in June 2020

From January to June, among the surface water assessment sections in 1940 countries, the proportion of sections with excellent water quality (Class I-III) was 80.1%, up 5.6 percentage points year-on-year; The proportion of inferior V sections was 1.1%, down 3.2 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, total phosphorus and permanganate index.

Figure 2 Proportion of surface water quality categories in China from January to June 2020

(2) Water quality of major rivers

In June, the proportion of I-III water quality sections in seven major river basins, such as the Yangtze River, the Yellow River, the Pearl River, the Songhua River, the Huaihe River, the Haihe River and the Liaohe River, and the rivers in the northwest, southwest and Zhejiang and Fujian provinces was 75.1%, up 1.4 percentage points year-on-year; The inferior V category was 1.9%, down 3.2 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and total phosphorus. Among them, the water quality of northwest and southwest rivers is excellent, the water quality of Yangtze River basin, Zhejiang and Fujian rivers, Pearl River basin and Yellow River basin is good, and Songhua River, Liaohe River, Huaihe River and Haihe River basin are slightly polluted.

Fig. 3 Proportion of water quality categories in seven major river basins, southwest and northwest rivers and rivers in Zhejiang and Fujian in June 2020.

From January to June, the proportion of I-III water quality sections in seven major river basins, such as the Yangtze River, the Yellow River, the Pearl River, the Songhua River, the Huaihe River, the Haihe River and the Liaohe River, and rivers in the northwest, southwest and Zhejiang and Fujian provinces was 83.8%, up 5.9 percentage points year-on-year; The inferior V class was 0.7%, down 3.8 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and five-day biochemical oxygen demand. Among them, the water quality of northwest rivers, Yangtze River basins, Zhejiang and Fujian rivers, southwest rivers and Pearl River basins is excellent, the water quality of Yellow River and Songhua River basins is good, and Huaihe River, Haihe River and Liaohe River basins are slightly polluted.

Fig. 4 Proportion of water quality categories in seven major river basins, southwest and northwest rivers and rivers in Zhejiang and Fujian from January to June, 2020.

(three) the water quality and nutritional status of important lakes (reservoirs)

In June, among the 112 key lakes (reservoirs) monitored, the number of lakes (reservoirs) with I-III water quality accounted for 71.4%, up 2.6 percentage points year-on-year; The proportion of lakes (reservoirs) with water quality worse than Grade V was 7.1%, down by 1.2 percentage points year-on-year. The main pollution indicators are total phosphorus, chemical oxygen demand and permanganate index. Among the 97 key lakes (reservoirs) monitoring eutrophication, 6 lakes (reservoirs) are moderately eutrophic, accounting for 6.2%; 19 lakes (reservoirs) were slightly eutrophic, accounting for 19.6%; The other lakes (reservoirs) are not eutrophic. Among them, Taihu Lake is slightly polluted and slightly eutrophic, and the main pollution index is total phosphorus; Chaohu Lake has good water quality and mild eutrophication; Dianchi Lake is heavily polluted and moderately eutrophic, and the main pollution indexes are chemical oxygen demand, total phosphorus and permanganate index. Erhai Lake has good water quality and moderate nutrition; The water quality of Danjiangkou reservoir is excellent and medium nutrition; Baiyangdian Lake is slightly polluted and slightly eutrophic. The main pollution indexes are chemical oxygen demand, permanganate index and total phosphorus. Compared with the same period of last year, the water quality of Chaohu Lake has improved, the water quality of Dianchi Lake has declined, and the water quality of Taihu Lake, Erhai Lake, Danjiangkou Reservoir and Baiyangdian Lake has not changed significantly. The nutritional status of Danjiangkou Reservoir has improved, but the nutritional status of Taihu Lake, Chaohu Lake, Dianchi Lake, Erhai Lake and Baiyangdian Lake has not changed significantly.

From January to June, among the 112 key lakes (reservoirs) monitored, the number of lakes (reservoirs) with I-III water quality accounted for 75.9%, up 9.8 percentage points year-on-year; The proportion of lakes (reservoirs) with water quality worse than Grade V was 5.4%, down by 1.9 percentage points year-on-year. The main pollution indicators are total phosphorus, chemical oxygen demand and permanganate index. Among the 109 key lakes (reservoirs) monitoring eutrophication, 5 lakes (reservoirs) are moderately eutrophic, accounting for 4.6%; 19 lakes (reservoirs) were slightly eutrophic, accounting for 17.4%; The other lakes (reservoirs) are not eutrophic. Among them, Taihu Lake is slightly polluted and slightly eutrophic, and the main pollution index is total phosphorus; Chaohu Lake has good water quality and mild eutrophication; Dianchi Lake is moderately polluted and moderately eutrophic, and the main pollution indicators are chemical oxygen demand and total phosphorus. The water quality of Erhai Lake and Danjiangkou Reservoir is excellent and medium nutrition; Baiyangdian Lake is slightly polluted and slightly eutrophic, and the main pollution index is chemical oxygen demand. Compared with the same period of last year, the water quality of Chaohu Lake and Erhai Lake has improved, the water quality of Dianchi Lake has declined, and the water quality of Taihu Lake, Danjiangkou Reservoir and Baiyangdian Lake has not changed significantly. The nutritional status of Dianchi Lake has declined, but there are no obvious changes in Taihu Lake, Chaohu Lake, Erhai Lake, Danjiangkou Reservoir and Baiyangdian Lake.

(four) the ranking of national surface water assessment sections in cities at or above the prefecture level

The cities at the prefecture level and above in the country participated in the ranking, covering 2050 national control sections (including 1940 national surface water assessment sections and 110 sea control sections). In June, among the cities at the prefecture level and above in China, the water environmental quality of national surface water assessment sections in 30 cities such as Laibin, Guilin and Zhangye was relatively good (from 1st to 30th), while the water environmental quality of national surface water assessment sections in 30 cities such as Cangzhou, Fuxin and Chifeng was relatively poor (from 1st to 30th). From January to June, among the cities at the prefecture level and above in China, the water environment quality of national surface water assessment sections in 30 cities such as Zhangye, Jinchang and Liuzhou was relatively good (from 1st to 30th), while the water environment quality of national surface water assessment sections in 30 cities such as Tongchuan, Cangzhou and Xingtai was relatively poor (from 1st to 30th). The changes of water environmental quality of national surface water assessment sections in 30 cities such as Yingkou, Lvliang and Liaoyuan are relatively good (from 1st to 30th), while the changes of water environmental quality of national surface water assessment sections in 30 cities such as Tongchuan, Daqing and Chifeng are relatively poor (from 1st to 30th). See Schedule 1 ~ Schedule 6 for details.

Second, the ambient air

In June, the average number of excellent days in 337 cities at or above the prefecture level was 85.1%, up 5.9 percentage points year-on-year; The concentration of PM2.5 was 19 μ g/m3, down 13.6% year-on-year; The concentration of PM10 was 40 μ g/m3, down by 7.0% year on year. O3 concentration was 143 μ g/m3, down 8.3% year-on-year; SO2 concentration was 8 μ g/m3, down 11.1% year-on-year; NO2 concentration was 18 μ g/m3, down 10.0% year-on-year; The CO concentration was 0.8 mg/m3, down 11.1% year-on-year.

From January to June, the average number of excellent days in 337 cities at or above the prefecture level was 85.0%, up 4.9 percentage points year-on-year; The concentration of PM2.5 was 36 μ g/m3, down 10.0% year-on-year; The concentration of PM10 was 59 μ g/m3, a year-on-year decrease of 14.5%. O3 concentration was 141 μ g/m3, down 1.4% year-on-year; SO2 concentration was 10 μ g/m3, down 16.7% year-on-year; NO2 concentration was 23 μ g/m3, down 14.8% year-on-year; The CO concentration was 1.3 mg/m3, down 13.3% year-on-year.

Figure 5 Proportion of days in 337 cities at prefecture level and above in China from January to June 2020.

Fig. 6 Concentration and year-on-year changes of six indicators in 337 cities at prefecture level and above in China from January to June 2020.

In June, the average number of excellent days in "2+26" cities in Beijing, Tianjin and Hebei and its surrounding areas was 36.9%, up 16.2 percentage points year-on-year; The concentration of PM2.5 was 35 μ g/m3, down 2.8% year-on-year. From January to June, the average number of excellent days was 59.7%, up 12.6 percentage points year-on-year; The concentration of PM2.5 was 55 μ g/m3, a year-on-year decrease of 16.7%.

The proportion of excellent days in Beijing in June was 33.3%, down 3.4 percentage points year-on-year; The concentration of PM2.5 was 32 μ g/m3, a year-on-year decrease of 17.9%. From January to June, the proportion of excellent days was 71.4%, up 9.0 percentage points year-on-year; The concentration of PM2.5 was 43 μ g/m3, down 8.5% year-on-year.

The average number of excellent days in 41 cities in the Yangtze River Delta region in June was 84.2%, up 19.1 percentage points year-on-year; The concentration of PM2.5 was 20 μ g/m3, a year-on-year decrease of 25.9%. From January to June, the average number of excellent days was 84.1%, up 10.5 percentage points year-on-year; The concentration of PM2.5 was 37 μ g/m3, a year-on-year decrease of 21.3%.

The average number of excellent days in June in 11 cities in Fenwei Plain was 60.9%, up 9.7 percentage points year-on-year. The concentration of PM2.5 was 28 μ g/m3, which was flat year-on-year. From January to June, the average number of excellent days was 66.5%, up 12.1 percentage points year-on-year; The concentration of PM2.5 was 53 μ g/m3, down 18.5% year-on-year.

In June, among the 168 key cities, Tangshan, Taiyuan and Jincheng were relatively poor in air quality (from the last one to the last 20); Zhuhai, Zhongshan, Shenzhen and other cities have relatively good air quality (from 1st to 20th, see attached table 7).

From January to June, among the 168 key cities, Shijiazhuang, Anyang and Taiyuan were relatively poor in air quality (from the last one to the last 20); The air quality in Haikou, Lhasa, Zhuhai and other cities is relatively good (from 1st to 20th, see attached table 8).

From January to June, among the 168 key cities, Baotou, Hohhot, Harbin and other cities improved their air quality relatively poorly (from the last one to the last 20); Yichang, Chizhou, Jingmen and other cities have improved their air quality relatively well (from the first place to the 19th place, see attached table 9).

Schedule 1 The top 30 cities and their water bodies in the national surface water assessment section in June 2020.

Schedule 2 The last 30 cities and their water bodies ranked by the national surface water assessment section in June 2020.

Note: The water quality of the water bodies marked with * in the table meets Class I or Class II of Environmental Quality Standard for Surface Water (GB3838-2002)Ⅰ).

Schedule 3 Top 30 Cities and Water Bodies in the National Surface Water Assessment Section from January to June, 2020.

Attached Table 4 The last 30 cities and their water bodies in the national surface water assessment section from January to June, 2020.

Note: The water quality of the water bodies marked with * in the table meets Class I or Class II of Environmental Quality Standard for Surface Water (GB3838-2002)Ⅰ).

Table 5 Changes of water environment quality of national surface water assessment section in January-June, 2020 ranked the top 30 cities and their water bodies.

Table 6 Changes of water environment quality of national surface water assessment section from January to June, 2020 ranked the last 30 cities and their water bodies.

Schedule 7 List of Top 20 and Last 20 Cities in Ambient Air of 168 Key Cities in June 2020

Schedule 8 List of Top 20 and Bottom 20 Cities of 168 Key Cities from January to June, 2020

Attached Table 9 List of Top 20 and Bottom 20 Cities in Air Improvement of 168 Key Cities from January to June, 2020

　　In the cold winter, many people first think of soaking in hot springs. However, although the hot spring is good, it should be decided according to its own situation, so don’t blindly "enter the soup".

　　Many people feel that it’s hard to soak in a hot spring, and if you want to soak, you have to soak enough. In fact, the time spent in hot springs is not as long as possible. Remember a principle when soaking in hot springs: temperature is inversely proportional to time. Generally soak for 5-10 minutes at a time; Hot springs with low water temperature can be soaked for 20-30 minutes at a time. The number of hot springs per day should be 2-3 times, and frequent bathing is not advisable. If you take too many baths, it will lead to excessive physical exertion, but it will easily cause fatigue and backfire.

　　Some people think that leaving the substances in hot springs on the skin is good for the body, but it is not. Because if you encounter a hot spring with high concentration of sulfur or alkaline components, if you don’t clean it or dry it, after the water evaporates, the concentration of these substances left on the skin will increase by dozens of times, which is very irritating to the skin. Sulfur and other acid and alkali substances contained in hot springs can diminish inflammation and sterilize, which is quite effective for general infectious or parasitic skin diseases, but sometimes it can irritate skin wounds and cause deterioration, and even lead to "hot spring skin diseases".

　　Don’t use soap-containing cleaning products when washing. Wash the water at a lower temperature. Finally, dry the whole body, and then apply lotion to the face and body to moisturize and lock the skin moisture. Be careful not to rub hard when taking a bath, especially the skin folds around the armpit, crotch, navel and limbs.

　　Before entering the hot spring, you should take a small amount of hot spring water in a small wooden bucket and pour it on your body, so that your body can adapt to the water temperature and then soak in the bath, so as to avoid sudden blood pressure drop and dizziness caused by anemia. It is suggested to detect the temperature of spring water with your hands or feet first, and never jump into the hot spring at once.

　　Don’t soak in hot springs immediately after a long trip, take a proper rest first. Hot springs should be avoided on an empty stomach and after meals to avoid anemia and indigestion, which may cause collapse on an empty stomach. To avoid taking a bath after drinking, taking a bath after drinking is most likely to cause heart or vascular system emergencies.

　　Don’t do strenuous exercise before taking a hot spring bath. After exercise, the heart rate and blood flow are accelerated, and the heat effect of hot springs is not good for the body; After exercise, it is best to rest for 10-20 minutes before taking a hot spring bath.

　　Massage cooperation. Appropriate acupoint massage will strengthen the health care effect of hot springs and have obvious therapeutic effects on some diseases. Women should not soak in hot springs for too long, otherwise it will easily destroy the normal pH and beneficial bacteria ecology in the vagina, and the vagina will be easily infected and itchy.

　　If you feel dry mouth and chest tightness, take a break by the pool, do some stretching exercises, and drink some distilled water to replenish water. Some people like to be soaked red all over, so it is especially necessary to observe whether there is any phenomenon such as rapid heartbeat and difficulty breathing to avoid danger. After bathing, you should wear a bathrobe and go back to your room to rest. Be careful not to catch cold. You should drink water or drink some drinks properly to replenish the lost water.

　　Finally, there are several situations in which it is best not to soak in hot springs: cancer patients and tuberculosis patients should not bathe in hot springs, and these two types of patients may have metastasis after bathing in hot springs; Patients with severe skin diseases should not wash hot springs because it may cause cross infection; Patients with cardiovascular diseases should soak in hot springs under the advice and observation of doctors; Diabetic patients can’t wash overheated hot springs. If the temperature is too high, it will speed up metabolism and increase the physical burden of diabetic patients. In the early pregnancy and labor period, it is not suitable for women with menstrual period or wounds to wash hot springs; Old people, people with dry skin or itchy skin in winter should not soak in hot springs for too long. Remember to drink water to replenish the water lost due to rising body temperature. In the hot spring pool, remember to take care of your face and skin to avoid steaming your face in the high temperature for too long. You can apply a mask or wipe your face with a cold towel. (Zheng Haiyan, Wang Biao)