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Is the earthquake near or far from you？ Earthquakes can be made？ Please keep these knowledge of earthquake science.

　　Is the earthquake near or far from you? Earthquakes can be made? What is earthquake warning? On May 12, 2023, on the occasion of the 15th National Disaster Prevention and Mitigation Day, the reporter visited the Seismological Bureau of Jiangsu Province to learn more about artificial sources, earthquake early warning and how to judge the distance of earthquakes.

　　Is the earthquake near or far from you?

　　Earthquake! How to "count by fingers" whether the earthquake is near or far from you?

　　During an earthquake, the distance from the epicenter to any point on the ground is called epicentral distance. An epicentre distance of 100-1000 km is a near earthquake, and a distance of more than 1000 km is a far earthquake. For example, the Wenchuan earthquake is a near earthquake for Chongqing, which is more than 300 km away. For Beijing, thousands of miles away, it is a distant earthquake.

　　The source will produce two kinds of seismic waves in underground rocks: longitudinal wave and shear wave. P-wave, also known as P-wave, is the first to reach the epicenter. Its propagation speed in the earth’s crust is about 6 km/s, which makes the ground vibrate up and down, and its damage is weak. Followed by shear wave, also known as S wave, the propagation speed in the earth’s crust is about 3.5 km/s, which makes the ground shake back and forth and left and right, which is more destructive.

　　Seismic waves can be recorded by seismographs. If the distance from the seismograph to the source is expressed as L, then the time to receive P wave can be expressed as L divided by the speed of P wave 6 kilometers per second, while the time to receive S wave is L divided by the speed of S wave 3.5 kilometers per second. The closer the difference obtained by subtracting the propagation time of the two waves, the closer the earthquake is; On the contrary, the farther away.

　　For the public, it is easier to judge by the sense of earthquake.

　　During an earthquake, we can count from the first time we feel shaking to the second time when we feel shaking stops, and count by the number of seconds. Suppose you count 20 seconds during this period, according to the formula of the time difference between longitudinal wave and shear wave, then the distance between the earthquake and you is about 160 kilometers!

　　In addition, when the P-wave and the S-wave propagate to 100 kilometers, they will gradually decay, overlap and interfere with each other, and then develop another wave-surface wave. It propagates along the surface of the earth, with slow energy attenuation and long propagation period, and sometimes it can even circle the earth several times. Because the surface wave period is similar to the natural period of high-rise buildings, people living in high-rise buildings will feel the sloshing is more obvious.

　　Don’t be afraid when the earthquake comes, the longitudinal wave and the transverse wave are sometimes different, so there is a way to count by pinching your fingers, and you know whether it is near or far!

　　Earthquakes can be made.

　　When it comes to earthquakes, many people will turn pale. However, apart from the disaster, we can also explore the interior of the earth through earthquakes: because seismic waves are the only waves that can penetrate deep into the earth.

　　However, due to the limited number of natural earthquakes, its location accuracy is not high, and the measurement of underground medium changes using natural sources is limited to some extent. Therefore, the use of artificial seismic sources to actively emit seismic waves into the ground has become the main means to monitor the changes of underground media.

　　In 1968, the air gun source was born. Its principle is to release high-pressure air in the water body, causing the vibration of the limited water body, and the huge water body knocks on the ground to excite the seismic wave that propagates outward.

　　However, air gun sources are widely used in the ocean and have never been used on land.

　　Since 1995, scientists have tested almost all artificial seismic sources that can generate seismic waves on land, including explosives, vibroseis, falling weights, train and subway vibrations, and found that they are not ideal artificial seismic sources.

　　In the 21st century, Chinese scientists began to try to introduce air gun sources into land detection, and developed the data processing technology of "micro-excitation", that is, the propagation distance of land bubble sources was greatly increased by superposition, thus further expanding the detection range.

　　Since 2006, China has built underwater air gun launchers in Urumqi, Xinjiang, Dali, Yunnan, Xiamen, Fujian, Qilian Mountain, Gansu and Baoji, Shaanxi. If more than a dozen air gun transmitting stations are set up in China to excite seismic waves, long-term continuous large-scale coverage exploration can be carried out in Chinese mainland, and regional large-scale structural exploration and seismic risk monitoring in tectonic active areas can be carried out.

　　However, when there is no suitable water body, the artificial source can also be an artificial air gun source made of compressed natural gas (methane). Its principle is that when methane and oxygen are mixed and ignited in a closed container, a detonation reaction can occur, and the high-pressure gas generated by detonation instantly releases the generated seismic wave. Its advantages are safety, environmental protection and high efficiency, and it can be used as a "small beacon" in high-precision shallow underground space exploration and development, and can be used in urban underground space development, site evaluation, seismic activity zone investigation, deep prospecting and so on.

　　The "bright light" has already risen, but the road is long and Xiu Yuan. In the future, scientists in China will continue to explore and write the research results of "There is a big dipper in the sky and a bright light in the ground" on the land of the motherland, slowly unveiling the mystery of the earth.

　　Aspects of earthquake early warning

　　How is earthquake early warning achieved?

　　There are two kinds of body waves during earthquakes: longitudinal waves and shear waves. Longitudinal waves run fast and have limited destructive power. Shear waves are slow and destructive.

　　After the earthquake, several early warning stations closest to the epicenter will receive p-wave seismic signals one after another, which will trigger the rapid judgment and measurement system of earthquake parameters, quickly measure the time, location, source type and magnitude of the earthquake, predict the intensity of ground movement in the relevant areas, and then use the principle that the speed of electromagnetic waves is much faster than that of seismic waves to send early warning information to different areas before the arrival of destructive shear waves.

　　The emergency time obtained by early warning can be used for escape and emergency treatment, effectively reducing casualties and disaster losses.

　　However, earthquake early warning also has shortcomings.

　　Because the information output depends on the limited recorded signals of observation stations near the epicenter, there are some limitations in earthquake early warning, such as early warning blind area, deviation and false alarm.

　　The early warning blind zone means that it takes a certain time for the station to receive the seismic wave and process the information. By the time the early warning information is sent out, the destructive seismic wave has spread for 20 to 30 kilometers. This makes it basically impossible to give an early warning within this radius, and it is precisely in this area that the ground movement is the strongest and the damage is the most serious.

　　Take the Wenchuan earthquake as an example, Yingxiu Town, which is less than 20 kilometers away from the epicenter, is in the early warning blind zone.

　　If there are few seismic stations in the epicenter and the recorded signals are incomplete, the early warning results may be biased. In practice, it is necessary to revise the results through continuous reporting.

　　When a seismic station is disturbed by non-seismic signals, it may also trigger an early warning system and issue an error message. In 2016, Japan misreported strong earthquakes due to lightning interference at individual seismic stations, resulting in short-term suspension of some rail transit.

　　Earthquake early warning is the most effective technical means to reduce disasters. With the implementation of the national earthquake intensity quick report and early warning project, the second-order earthquake early warning capability has been initially formed in some areas of China.

　　Xinhua Daily Meeting Point reporter Cheng Xiaolin

The market is dynamic and dynamic (big data observation)

　　Core reading

　　In recent years, under the background of the deepening reform of the commercial system, the number of market players in China has been rising steadily, and the speed of newly established enterprises has obviously accelerated. China’s market entities have been less than 500,000 at the beginning of reform and opening up, and by the end of November 2018, there were 109 million market entities in China. Especially in the past five years, the total number of various market players in China has increased by more than 70%.

　　516 times

　　The growth of individual industrial and commercial households in China in the past 40 years

　　"At the beginning, it was a small watch repair booth, and there was a movable tin room that was my workshop. Now it has developed into a 30-square-meter watch shop that integrates watch repair and watch sales. "

　　— — Li Xianfang, the owner of the watch repair shop

　　In Xigong, Taiyuan City, Shanxi Province, there is a "Fangfang Watch Repair Shop" that has been in business for more than 30 years. The owner Li Xianfang left Fenji May 7th Factory in 1981 and later opened this watch repair shop to engage in self-employment. "At the beginning, it was a small watch repair booth, and there was a movable tin room that was my workshop. Now it has developed into a 30-square-meter watch shop, which integrates repairing and selling watches. I plan to open another branch this year. " Li Xianfang said.

　　In fact, it’s not easy for Li Xianfang to start her own business. She suffered from polio, and she didn’t continue her studies after graduating from a disabled high school. However, the market economy has given everyone the opportunity to stand on their own feet. "It is this watch shop that makes me feel that I am still ‘ Useful ’ It is the market economy that has enabled me to find confidence through honest management. " Li Xianfang said.

　　Individual industrial and commercial households, such as Fangfang Watch Repair Shop, are the most microscopic and numerous members in China’s market. According to Zhang Jiurong, deputy secretary-general of the China Association of Self-employed Workers, the number of individual industrial and commercial households in China increased from 140,000 in 1978 to 72,374,500 at the end of November 2018, an increase of 516 times.

　　According to the relevant person in charge of the State Administration of Markets, since the reform of the commercial system, there have been frequent measures to simplify administration and decentralize power. On December 1, 2016, the "two certificates integration" of business license and tax registration certificate for individual industrial and commercial households was fully implemented nationwide. Citizens only need to fill in "a form" and submit "a set of materials" to "a window" to handle the industrial and commercial and tax registration of individual industrial and commercial households.

　　31.0537 million households

　　Number of registered private enterprises in China

　　"The experience of starting a business for so many years has made me more convinced that people who are poor can’t be poor in thinking, and they must work hard if they have ideas."

　　— — Supermarket owner Ma Yulin

　　"The environment for running a business is getting better and better." Ma Yulin, who has been starting a business, said with emotion: "It’s getting easier and easier to find a government service. In the past, I ran several units for a business license, but now I go to the government affairs hall for one-stop solution."

　　In 2001, after graduating from Qinghai University, Ma Yulin went to Shanghai to open a "Qinghai specialty store". Six years later, he returned to his hometown of Tongren County, Huangnan Tibetan Autonomous Prefecture, Qinghai Province to open the "Huangnan Gufeng Aquatic Products Distribution Department". Two years later, he founded the "Tongren Regong Shopping Center". After nine years of development, it has become a local model supermarket with a business area of more than 1,000 square meters, integrating grain and oil, fruits and vegetables, non-staple food, wholesale and retail of department stores and distribution.

　　In 2018, Ma Yulin transferred another 10 mu of land from the countryside, intending to process and package local native products and sell them outside the province. Born in poverty, he said: "The experience of starting a business for so many years has made me more convinced that people who are poor can’t be poor in thinking, and they must work hard if they have ideas. In this era, if you work hard, you will definitely not do it in vain. "

　　Since the reform and opening up 40 years ago, countless entrepreneurs with entrepreneurial spirit have emerged in China. The enterprises they founded include regional enterprises such as Tongren Regong Shopping Center, as well as world-renowned enterprises such as Huawei, Lenovo and Haier, which have done business all over the world. In 1989, after private enterprises were allowed to register, the total number was only 90,500. By the end of November 2018, there were 31,053,700 private enterprises registered nationwide, an increase of more than 340 times.

　　The commercial system makes the threshold for starting a business lower and lower. The paid-in registered capital has been changed to subscription system, and reforms such as "one address with multiple photos", "one photo with multiple addresses", "business secretary" and "creating space for all" have lowered the threshold of funds and venues for setting up enterprises; The reform of "three certificates in one", "five certificates in one" and "multiple certificates in one" has greatly simplified the licenses of enterprises involved; 29 provinces have realized paperless electronic registration; The reform of "separation of licenses" has solved the problem that enterprises are not allowed to operate.

　　54703 Jia

　　Newly established foreign-invested enterprises in November 2018.

　　"We have lived in China for 9 years and always thought that it would be particularly troublesome for foreigners to open a company in China. With the idea of giving it a try, I didn’t expect the photo-taking process to be very easy."

　　— — Milla from Ukraine.

　　"We have realized our dream of starting a business in China." Milla from Ukraine and her husband Sasha opened a gym in Shijingshan District in 2018. "We have lived in China for 9 years and always thought that it would be particularly troublesome for foreigners to open a company in China. With the idea of giving it a try, I didn’t expect the photo-taking process to be very easy." Milla said.

　　Sasha used to be a fitness instructor in a fitness club in Hewan Street. With more and more students, he came up with the idea of starting his own fitness company. "The staff in the service hall instructed us how to apply online, submit materials, file with the Commercial Committee and other procedures, and got the business license and seal two days after completing the materials." Sasha said.

　　From this Ukrainian gym to Siemens in Germany and Samsung in South Korea, foreign-invested enterprises have always been an important part of more than 100 million market players in China. According to the National Bureau of Statistics, by the end of 2017, there were nearly 540,000 registered foreign-invested enterprises. In 2017, China was the second largest foreign capital inflow country in the world, and since 1993, the scale of utilizing foreign capital has ranked first among developing countries. According to the latest data from the Ministry of Commerce, 1-mdash in 2018; In November, 54,703 foreign-invested enterprises were newly established nationwide, up 77.5% year-on-year, and the number of newly-added foreign-invested enterprises increased significantly.

　　According to the latest Business Environment Report for 2019 released by the World Bank, China’s business environment rose 32 places in the global ranking, jumping from 78th in the previous period to 46th.

　　The optimization of the business environment allows foreign-funded enterprises to "get in", clear regulatory obstacles, integrate customs clearance, paperless customs clearance for automatic import licenses and other innovative measures, so that foreign-funded enterprises can "run faster" in the China market. In the future, China’s business environment will be further optimized, and more foreign investors are welcome to invest in China. The door to China’s opening will never be closed.

The glory moment of the storm

　　The final prize of the 4th "China Automobile Fengyun Festival" of Central Radio and Television General Station was unveiled in Beijing, and the first model of Warrior Technology under Dongfeng — — Warrior 917 won the highest prize of "Car of the Year of the Jury", which became the new backbone of China’s car’s upward rise.

The glory moment of the Fengyun International Games-the annual Fengyun car "Warrior 917" _ for order _ image 001

　　"Warrior 917 has been given it since its birth ‘ Fearless conquest ’ The spiritual connotation, directly pulling out the Alashan Tiankeng, crossing the ancient road of Kriya, and reaching the highest sand peak in the world in Kumukuri, Warrior 917 has the heroic spirit of daring to compete for the first place and the technical confidence to conquer the peak. " You Zheng, deputy general manager of Dongfeng Motor Group Co., Ltd. and member of the Standing Committee of the Party Committee, said.

The glory moment of the Fengyun International Games-the annual Fengyun car "Warrior 917" _ for order _ image 002

　　Up to now, M TECH, the warrior’s intelligent off-road architecture, has applied for more than 450 patents, which has promoted the all-round evolution of hard-core off-road with subversive technological innovation.

The glory moment of the Fengyun Games-The annual Fengyun car "Warrior 917" _ 917”_fororder_image003

　　Since October, 2021, more than 300 Warriors 917 have completed the reliability and durability verification of the whole vehicle in cross-altitude, cross-region and cross-climate, with a cumulative safe off-road mileage of more than 6 million kilometers.

The glory moment of the Fengyun International Games-the annual Fengyun car "Warrior 917" _ for order _ image 004

　　From the ice and snow at MINUS 40 degrees to the desert Gobi at 60 degrees, from the cold region to the plateau, from Mohe to Turpan, from the harsh working conditions of off-road venues to the opening of roads in the whole scene, Warrior 917 created seven "firsts" in China: the first mass production model in China to directly pull out the Tengger desert sinkhole; The first new energy vehicle in China to complete the two-hour acceleration challenge of Flame Mountain; The first vehicle in China successfully crossed the dense border line of National Highway 219, Haidao Road and Keriya Ancient Road; China is the first production model to successfully climb to the top of 4,772 meters in the world’s highest altitude Shafeng Kumku; The first vehicle in China to pass the four-round national standard endurance strength test; The first model in China to complete the safety challenge of desert tumbling; The first vehicle in China to complete 21 hard road jump tests.

The glory moment of the Fengyun International Games-the annual Fengyun car "Warrior 917" _ for order _ image 005

The glory moment of the Fengyun International Games-the annual Fengyun car "Warrior 917" _ for order _ image 006

　　Warrior 917 won the reputation of "the first luxury electric off-road vehicle in China" with subversive innovative technology and extremely powerful off-road performance, and became the "new backbone" of China automobile. Warrior 917 shoulders the initial intention and mission of national brand promotion. With the product positioning of "new off-road species, new luxury experience" and customized service of "one car, one price, one person, one car", it initiated the era of "one car, thousands of faces" of off-road vehicles and successfully opened up a new luxury electric off-road market in China. (Source: Warriors Technology)

More than 80% of housing enterprises have failed, and sales have rarely experienced negative growth. Is the myth of the property market a thing of the past？

　　Zhongxin Finance, January 12 (Zuo Yukun) In 2018, Vanke, the head housing company, put forward the slogan of "live", which was also considered to be a worry for good students. Unexpectedly, the cautious "one word" has become the "collective anxiety" of the whole industry.

　　More than 80% of typical housing enterprises have not completed the annual target in 2021, and "surviving" has become the main proposition of the real estate industry.

　　The goal failed, and the head housing enterprises were defeated.

　　According to the data released by the real estate data platform Kerui, the target completion rate of the top 100 real estate enterprises in 2021 is far less than that of the same period in history. More than 80% of the large-scale real estate enterprises that disclose their annual performance targets have not completed their targets.

　　This year, from the centralized land supply on the land side and the three red lines on the financing side to the massive tightening of the mortgage side, regulation and control have hobbled the industry. For housing enterprises, sales difficulties, payment difficulties, falling profits, and even debt default, capital chain break, layoffs and salary cuts have become a straw on camels.

　　According to the statistics of the Central Finger Research Institute, from the perspective of 32 typical real estate enterprises that announced their sales targets, Evergrande was at the bottom with a completion rate of only 61.5%. Before the storm, Evergrande also handed over its report card in 2020, which exceeded its target by 108.3%. Capital Land ranked second from the bottom, only achieving 68.3% of the target of 80 billion yuan.

　　The performance of Country Garden, Vanke and Sunac, the leading housing enterprises with the top three sales in the whole year, was not satisfactory, with the target completion rates of 88.9%, 78.5% and 93.4% respectively, which were not up to standard and were in the middle and rear position among 32 housing enterprises.

Image source: Middle Finger Research Institute

　　Image source: Middle Finger Research Institute

　　Vanke, which has not disclosed its sales target for many years, rarely set a flag of 790 billion yuan in 2021. This figure exceeded its sales performance by 12% in 2020, but only 78.5% was completed in the end, directly pulling Vanke, which has not yet gained a foothold in the 700 billion+camp, back to the 600 billion ranks again.

　　In November, an internal proposal of Vanke was circulated on the Internet. Vanke, who once shouted "Live", once again advocated "frugality" and created a "wartime atmosphere".

　　But this time, Vanke is no longer "one person". In December, LAM Raymond, CEO and executive director of Xuhui Holding Group, also issued a document saying: "Real estate has entered the bronze age, which is an ice age and CAMBRIAN, so we should prepare for a long winter."

　　The waist is strong, and small and medium-sized housing enterprises enter the Xiuluo field.

　　It is embarrassing for a large number of enterprises to "return to bronze", which also makes the housing enterprises that have achieved their sales targets more interesting.

　　Of the 32 housing enterprises, only 6 have achieved their sales targets, namely Greentown China, Binjiang Group, Yuexiu Property, Dafa Property, Zhengrong Group and China Resources Land, all of which are large waist housing enterprises. Among them, Greentown China, Binjiang Group and Dafa Real Estate "submitted papers in advance", and completed the annual target in November.

　　According to the announcement, in 2021, Greentown achieved sales exceeding 350.9 billion yuan, a year-on-year increase of about 21%. In 2021, the cumulative sales amount of Binjiang Group was 169.1 billion yuan, up by 24% year-on-year, and their target completion rates reached 113.2% and 112.8% respectively.

　　The biggest thing that these two outstanding "top students" have in common is that they all belong to Zhejiang real estate enterprises. From the two projects in 2021, it is not difficult to find that the layout strategy focusing on Hangzhou is the key to the contrarian rise in sales performance of the two housing enterprises.

　　Hangzhou property market, which is in full swing, is still out of the independent market this year: the turnover of new houses is nearly 190 thousand sets, a new high of nearly five years; The annual sales exceeded 620 billion yuan, setting a new record of 450 billion yuan in 2020.

　　Dafa Real Estate is the only real estate enterprise that has achieved its sales target without exceeding 100 billion yuan. The remaining five housing enterprises that have not entered the "Billion Club" are Hongyang Real Estate, Yincheng International, Fantasia Year, Contemporary Real Estate and Capital Real Estate. These five "he is my brother" not only failed to reach the industry average, but also included two domestic enterprises, namely Fantasia and Contemporary Home Purchase.

　　Scale and capital, profit and liabilities seem to have become the curse of small and medium-sized housing enterprises. Yan Yuejin, research director of the think tank center of Yiju Research Institute, said that studying new market opportunities in the post-epidemic era is an important logic for small and medium-sized housing enterprises to seek survival.

　　In the era of negative growth, what can housing enterprises do?

　　All of the above proves that the real estate industry is facing a major reshuffle. The once "Bi Wan Heng" top three pattern was broken with Sunac’s joining and Evergrande’s falling behind, and the threshold of the top three was gradually lowered.

　　According to the data of the Central Finger Research Institute, in 2021, Country Garden, Vanke and Sunac ranked in the top three with accumulated sales of 758.82 billion yuan, 620.3 billion yuan and 597.6 billion yuan respectively, totaling 1,976.7 billion yuan. Compared with 2020, the sales of Country Garden, Evergrande and Vanke reached 788.81 billion yuan, 703.8 billion yuan and 701.1 billion yuan, respectively, shrinking significantly.

　　The weakness of the "leader" also made the change of the industry market unexpected.

　　According to the annual sales ranking released by Kerui on December 31, the annual sales of the top 100 real estate enterprises in 2021 totaled 11.08 trillion yuan, down 3.5% year-on-year. The total sales of the rights and interests of the top 100 real estate enterprises in 2021 was 8.88 trillion yuan, a year-on-year negative growth of 6%.

　　The last time the real estate industry showed an obvious downward trend, it went back to 2008. Ding Zuyu, CEO of Yiju Enterprise Group, believes that the real estate industry has bid farewell to the "platinum era" and entered the "zero growth era".

　　Fortunately, the regulatory authorities have not turned a blind eye to the unfavorable situation of the development of the real estate industry. Since September 2021, they have repeatedly released rectification signals. From the central economic work conference to "better meet the reasonable housing needs of buyers" and "promote a virtuous circle of real estate industry", to the official mention of "real estate is a pillar industry", it is undoubtedly a shot in the arm for the disheartened industry.

　　This also makes the previous year the end of the year and the beginning of the traditional winter break of the property market. There are still many ways to relax the supervision of pre-sale funds, subsidize the purchase of houses by talents, and issue a "limit order". Major developers frequently promote and push goods.

　　It seems that the property market in 2022 will still not be ordinary. (End)

Prepare for spring ploughing, ensure supply and stabilize the basic agricultural disk

　　Cctv news(News Network): During the rainy season, all parts of the country should seize the opportunity to prepare for the spring ploughing, lay a solid foundation for the bumper harvest of summer grain, and strive to increase the area of spring sowing only.

　　The latest agricultural situation scheduling shows that most of the winter wheat in the northwest and Huanghuaihai wheat areas is in the wintering period, and it is expected to turn green in late February. Hebei, which is located in the Huanghuaihai wheat area, has set up a leading group to promote grain production, and has refined the task of transforming and upgrading the situation of wheat seedlings in the province from township to village to plot.

　　At present, winter wheat in the southwest wheat area has got up and started jointing. Chongqing launched a plan to improve grain yield in a timely manner, organized 19 agricultural technology guidance groups, and carried out the "spring ploughing service for 100 days" action.

　　Winter wheat in Jianghuai wheat area has turned green. Anhui province has advanced the field management in spring this year by one week, focusing on promoting supporting high-yield techniques.

　　From this year, the central government began to implement the assessment of food safety with the same responsibility of the party and government, and refined the assessment indicators such as grain area and yield in the main grain producing areas, production and marketing balance areas and main sales areas. This year, the area of winter wheat in China has stabilized at more than 330 million mu, and the main producing areas are trying their best to increase the yield of wheat per unit area.

　　In order to ensure the supply of primary products, this year, all localities have actually adjusted their structures and expanded the cultivation of soybeans and oilseeds.

　　In the main producing areas in Northeast China, Heilongjiang will expand soybean planting by more than 10 million mu. At present, the soybean planting area has been decomposed into cities, counties and townships.

　　One by one, it has laid a solid foundation for national food security.

Experts analyze the whole process of influenza. If you have persistent high fever or severe cough, you need to seek medical advice in time.

Text/Figure Yangcheng Evening News reporter Zhang Hua correspondent Wang Shuhua Liu Qisha

It’s too difficult for children this year. Mycoplasma pneumonia hasn’t gone yet, and the flu is coming again. Some netizens complained: "When I went out in the morning, I started to have a fever and feel unwell in the afternoon, and I was infected with the flu, and the onset was quite fast." What are the symptoms of being infected with influenza virus? What medicine should I take? What situation needs to go to the hospital for treatment? The reporter interviewed relevant experts to understand the incidence of influenza and asked them to give corresponding countermeasures.

Emergency use of antiviral drugs within 48 hours of infection.

Influenza virus is mainly spread by respiratory droplets such as sneezing and coughing. Influenza spreads strongly and quickly, and people are generally susceptible, and the risk of infection in children is higher.

"On the first day of infection with the flu virus, the body temperature will rise rapidly, and the muscles of the whole body will be sore, tired and have a headache." Mai Huachao, an attending physician in the Department of Internal Medicine of Guangdong Maternal and Child Health Hospital, said, "The antiviral drug oseltamivir can be used under the guidance of a doctor. It is prime time to use it within 48 hours, which can shorten the course of disease and prevent the occurrence of severe diseases."

With the prevalence of various pathogens in the lower respiratory tract, Cen Zhenghui, deputy chief physician of Pediatrics of the Eighth Hospital affiliated to Guangzhou Medical University, pointed out that the general symptoms of influenza patients are more severe, with high fever obvious in the early stage of the disease, atypical respiratory symptoms, accompanied by fatigue, headache, muscle aches and other manifestations. Patients infected with mycoplasma pneumoniae, unlike influenza, are accompanied by typical symptoms of dry cough in addition to fever. In addition, influenza antigen, mycoplasma pneumoniae serum antibody detection, nucleic acid detection and other tests can help doctors make identification and diagnosis.

If the fever persists for more than 3 days or the cough is severe, you need to see a doctor.

On the second or third day of influenza infection, the immune cells in the body fight the virus with all their strength, and the human body may have repeated symptoms such as fever, headache, sore throat and runny nose. Mai Huachao suggested that at this time, you should rest at home and drink plenty of water to give your body the energy to fight the virus.

Generally, on the 4th day after infection, the body temperature gradually returns to normal, and symptoms such as sore throat, headache and runny nose begin to ease, but the cough will get worse. Mai Huachao pointed out: "When infants, especially those within three months, continue to have high fever for more than three days or cough is serious enough to affect rest, it is recommended to seek medical advice immediately."

After the fever has gone down, quite a few children will have cough symptoms. Mai Huachao said that if you have a dry cough, you can take some cough medicine. If you have a serious cough with phlegm, or have fever symptoms, you should seek medical advice in time. Most symptoms of influenza will be relieved within 3-7 days, but cough and physical recovery often take more than 1-2 weeks.

You can still get the flu vaccine after you get the flu.

Both influenza and mycoplasma pneumoniae can cause pneumonia. Cen Zhenghui pointed out that if the child has a fever for more than 3-5 days repeatedly, the high fever does not go away, or there is a severe cough, the doctor auscultates the rales in the lungs, and the chest film and other imaging findings suggest that the lungs are oozing, which may be pneumonia. The specific situation needs the doctor’s judgment.

Is it necessary to get a flu vaccine after being infected with the flu? Experts say that after the flu patients are cured, it is still necessary to vaccinate against different types of influenza virus infection. Although the protection of vaccine against influenza virus can not reach 100%, it can effectively reduce infection symptoms and improve recovery speed after vaccination. It is recommended to vaccinate after the fever is gone and the flu symptoms are basically relieved.

Hu Dandan, director of vaccination clinic for people with special needs in Guangdong Province of Guangzhou Women and Children Medical Center, said that usually, after 2-4 weeks of influenza vaccination, antibodies with protective level can be produced. Therefore, vaccination can have a protective effect when the peak of influenza comes in winter, and people aged 6 months and above can be vaccinated without vaccination contraindications.

Background information： previous ministerial conferences of the World Trade Organization.

　　Xinhua News Agency, Mexico City, December 9th Background information: previous ministerial conferences of the World Trade Organization.

　　The 11th Ministerial Conference of the World Trade Organization (WTO) will be held in Buenos Aires, Argentina, on the 10th. Argentina will become the first South American country to hold a ministerial meeting after the establishment of WTO.

　　The ministerial meeting of the WTO is the highest decision-making authority of the WTO and is generally held every two years. The following are the basic information of previous WTO ministerial meetings:

　　The first ministerial conference: held in Singapore in December 1996. The meeting mainly reviewed the work since the establishment of the WTO and the implementation of the last round of multilateral trade negotiations, that is, the Uruguay Round agreement, and decided to set up three working groups, namely, trade and investment, trade and competition policy, and transparency of government procurement. At the same time, trade facilitation was included in the responsibilities of the Council for Goods. The meeting finally adopted the Singapore Ministerial Declaration.

　　Second Ministerial Conference: held in Geneva in May 1998. The meeting mainly discussed the implementation of the trade agreements reached, the established agenda and the future negotiation agenda, as well as the time and place of the third ministerial meeting.

　　The Third Ministerial Conference: held in Seattle, USA in November 1999. The meeting failed to start the proposed new round of multilateral trade negotiations due to the pressure of demonstrations and interference by non-governmental organizations and the differences of views among members on a series of major issues.

　　Fourth Ministerial Conference: held in Doha, Qatar in November 2001. The meeting launched a new round of multilateral trade negotiations of the Doha Round. Another important result of the meeting was the approval of China’s accession to the WTO. The meeting finally adopted three documents, including the Ministerial Declaration.

　　Fifth Ministerial Conference: held in Cancun, Mexico in September 2003. Because developed countries refused to make substantial concessions on reducing agricultural subsidies and tariffs on agricultural products, the meeting ended without results. The meeting only adopted the Statement of the Council of Ministers.

　　Sixth Ministerial Conference: held in Hong Kong, China in December 2005. After six days of negotiations on the Doha Round, the participants issued the Ministerial Declaration, and made progress in eliminating export subsidies for cotton and agricultural products and opening the market to the least developed countries. However, the Doha Round negotiations have not been fully completed.

　　Seventh Ministerial Conference: held in Geneva, Switzerland from November 30th to December 2nd, 2009. The meeting failed to make significant progress in promoting the Doha Round negotiations, but continued to promise to conclude the Doha Round negotiations in 2010.

　　Eighth Ministerial Conference: held in Geneva in December 2011. The meeting formally approved Russia’s accession to the WTO. Due to the great differences among members in some negotiation fields, the Doha Round negotiations are in trouble.

　　Ninth Ministerial Conference: It was held in Bali, Indonesia in December 2013. The conference reached the first multilateral trade agreement "Bali Package Agreement" since the establishment of the organization, among which trade facilitation has the most obvious impact on global trade.

　　Tenth Ministerial Conference: held in Nairobi, Kenya in December 2015. The meeting finally adopted the Nairobi Ministerial Declaration, in which 162 members pledged for the first time to completely eliminate export subsidies for agricultural products. The meeting reached the first tariff concession agreement of the WTO in the past 20 years — — Expansion agreement of the information technology agreement; The meeting also formally approved Liberia and Afghanistan to join the WTO.

Do heroes ask about their origins？ Grass-roots rookie and rabble save the world

　

　 　 1905 movie network exclusive feature　The Wachowski brothers’ new work "Jupiter Upward" officially landed in major theaters on March 6. The always cold and weird brother and sister once again served a sci-fi feast, a grand and complicated world view, special effects settings that mixed primitive and fashionable, and a tortuous and bizarre struggle for power … … Of course, there is still the messiah complex that the two brothers and sisters have been lingering, but this time the hero is busy working as a toilet cleaner in an immigrant city on earth … …

　

　 　 Looking at the popular movies in recent years, individual heroism seems to be a tried-and-true box office medicine: the earth will be destroyed at every turn and the universe will be in crisis at every turn. And this savior, who decides the fate of mankind and the order of the universe, can reverse Gan Kun and settle all the Machamp chaos with one hand. Interestingly, such heroes are not all powerful aristocrats, rich dudes or knowledgeable intellectuals. Many hot movies have shown us that "heroes don’t ask for their origins", and even "bad guys" who are petty villains can stand up and save the world from hot water … …

　

　 　 Let’s review the popular movies in recent years, which are the "grassroots" heroes:


　

"Jupiter Ascends" and "Toilet Queen": Holding hands with "Skateboarding Boys" to save the earth

　

Grass root value: ★★★★★★★

　

Heroic value: ★★★★★

　

　 　 The gene sequence of the predecessors reappears, which is reincarnation. However, the famous royal queen gene became a toilet cleaner when she arrived on the earth, and she was still an older woman who was rejected by her relatives. This reincarnation is too … … . Moreover, the reincarnated queen has no power and influence, and it is a bit timid to get an ID card and queue up with a stamp. Fortunately, there is a lean and sophisticated "skateboard-shoe boy" who is closely protected. The queen of the toilet has no danger all the way, and she also beat the little prince of the bitch who is weak in the outside world, successfully saving her family and saving the whole earth from disaster. What’s more, after solving such a grand proposition of changing human destiny, the Queen still chose to be a toilet worker quietly, which is simply a model of Do not forget your initiative mind.

　

Big Hero 6wonder childHiro: No one can stop a scientist with a big brain hole.

　

Grass root value: ★★★★☆.

　

Heroic value: ★★★★★

　

　　　 Heroes have been teenagers since ancient times, and Hiro finished high school at the age of 13. However, similar to the setting of most superheroes, the gifted child’s parents died when he was young, and his brother, who was also a relative, teacher and friend, was also buried in the fire in front of his eyes. Only the medical robot "Dabai" left by his brother became a continuation of their feelings. Of course, scientists have to arm themselves to defeat their opponents. Therefore, Xiaohong, who is quite a leader, not only turned the cute and warm man robot into a killing machine with superior martial arts, but also formed a heroic team of "Fantastic Six" with his friends to fight crime together. Even the villain’s weapons are all from Xiaohong’s design. So young and promising, the future is limitless, and the sequel to big hero 6 is just around the corner.

　

The Hunger Games"Big Cousin" Katniss: Utopian Goddess and Woman in One

　

Grass root value: ★★★★★★★

　

Heroic value: ★★★★★

　

　 　 "Big Cousin" Katniss was really just her cousin’s big cousin. If there is anything different, she just likes to shoot an arrow and steal a hunt. However, my cousin unfortunately became a "tribute", so she had to stand up and defend her sister’s sword. The 12th district where the eldest cousin is located mainly focuses on coal mines. It was not until the age of 18 that the children were allowed to learn professional skills and were the farthest from the capital of Shihui. Only two winners came from this district in history. However, under so many disadvantages, she didn’t take the lunch early with her good skills, good popularity and touching love stories, and even became a symbolic figure of the rebel army. On the one hand, she was worried about the life and death of her lover, on the other hand, she was forced to shoulder the life and death of everyone. This hero was really tangled.

　

the hobbitBilboBa JinS: The Hobbit Snitch assists.

　

Grass root value: ★★

　

Heroic value: ★★★★

　

　 　 By today’s standards, bilbo baggins is not grassroots at all — — Born into a landlord family, he was well-fed and respected, but in such a mythical and legendary Middle-earth, life without adventure stories was too ordinary, so Bilbo finally joined Sorin’s expedition team. With the power of the unexpected Lord of the Rings, Bilbo repeatedly helped his teammates save the day, and this "pig teammate" slowly grew into a "god assist". However, the power of the supreme Lord of the Rings is constantly tempting him, which makes him occasionally expose his greedy and narrow-minded side. It was not until his old age that he gave up holding the Lord of the Rings under the bludgeon of his old friend Gandalf. Bilbo, who had no children, gave all his inheritance to his nephew Frodo, and since then into thin air.

　


InterstellarAstronaut farmer Cooper: Planting corn to save the earth is correct.

　

Grass root value: ★★★★★

　

Heroic value: ★★★★★★★

　

　 　 Too many people are addicted to the film’s "hard science fiction" settings, but forget that this heroic astronaut who saved all mankind is just an ordinary farmer and an ordinary father. It is a question whether to hide at home and "eat some old corn" or "look up at the stars" to find new possibilities. However, as a father, he has the obligation to serve his children, their children, and their children … … Create good living conditions. Therefore, with a halo of human nature, "hard science fiction" becomes "soft science fiction". Black holes and high-dimensional spaces are just "stunts". How can we stop the great father’s love?

　

Guardians of the Galaxy.Dobby legion: the mob saves the galaxy

　

Grass root value: ★★★★★★★

　

Heroic value: ★★★★★★★

　

　　　 When "Reunion" is busy saving the earth, they are saving the Milky Way! Oh, well, let’s see what kind of people are saving the Milky Way: a thief kidnapped by aliens from childhood, a self-employed beast tortured by genetic modification, a "Woodenhead" who can only say one word all his life, a headstrong man who can’t understand metaphors and limbs, and a female killer who has repeatedly betrayed her own people — — This is simply a group of social scum. But it is such a group of "rabble" who defeated the ambitious evil forces and saved the whole galaxy. We can only say that the definition of a hero is really changing.


Next page: Peter Parker, a literary youth in Spider-Man: The rich rely on weapons and the poor rely on variation.

Foshan qichen V DD-i super hybrid price reduction information, with a discount of 26,000! There are plenty of cars.

[car home Foshan Preferential Promotion Channel] Recently, the model launched a price reduction promotion activity in Foshan market, with the highest preferential amount reaching 26,000 yuan, which reduced the minimum starting price to 95,900 yuan. If you are interested in this model, you may wish to click "Check the car price" in the quotation form to get a higher discount.

佛山地区启辰大V

The super-hybrid design of Qichen V DD-i is eye-catching. The front face adopts a family-style design language, and the front grille presents a wide V-shape, which echoes the brand logo and highlights its unique identity. The overall lines are smooth, and the body presents a dynamic posture. With streamlined roof lines and sharp headlights, it shows a sense of technology and sports. The overall style is simple without losing the atmosphere, which shows the innovative spirit and design strength of Qichen brand.

佛山地区启辰大V

Qichen V DD-i super hybrid has a body size of 4607*1917*1624 mm and a wheelbase of 2700 mm, which gives it spacious interior space. The side lines of the car are smooth and dynamic, forming a natural extension from the front face to the rear of the car, outlining a compact and powerful visual effect. The front and rear wheel tracks are 1640 mm, which ensures the stability and handling of the vehicle during driving. With 19-inch rims, the tyre size is 235/55 R19. Its unique rim design not only enhances the visual impact of the whole vehicle, but also provides good grip and comfort for driving.

佛山地区启辰大V

Qichen V DD-i super hybrid interior design is based on simplicity and sense of technology. The center console adopts a 12.3-inch central control screen, which supports voice recognition control system and brings convenient operation experience. The steering wheel is wrapped in leather, which makes it feel comfortable. At the same time, it supports manual adjustment up and down and back and forth to meet the individual needs of different drivers. The front row is equipped with mobile phone wireless charging function, which is convenient for drivers to charge at any time. In terms of seats, Qichen V DD-i super hybrid seat is made of imitation leather, and the main driving seat has the functions of front and rear adjustment, backrest adjustment and 2-way height adjustment, providing a comfortable driving experience. The co-pilot seat also supports front and rear adjustment and backrest adjustment, which brings passengers a comfortable riding experience. The rear seats can be laid down in proportion, providing more storage space to meet the needs of different scenes.

佛山地区启辰大V

Qichen V DD-i super hybrid system is equipped with a 1.5T turbocharged engine with a maximum power of 120kW and a maximum torque of 230 N m.. The matching E-CVT continuously variable transmission makes the power output smoother and more efficient, providing excellent driving experience for drivers.

The owner of car home spoke highly of Qichen V DD-i super hybrid, saying that it was his first electric car, and the experience was very satisfactory, much better than that of a pure oil car. He particularly emphasized the power feeling, pointing out that the motor started vigorously and smoothly, and there was no sense of shifting, which was the main reason why he chose this car. In addition, as his first SUV, Qichen V DD-i super hybrid has performed very well in sitting posture, vision and space, and the rear seats are spacious and suitable for home use. In terms of appearance, the white body looks atmospheric and fashionable, while the green is fresh and special. In terms of fuel consumption, Qichen V DD-i super hybrid has performed well on urban roads, especially in traffic jams, which can significantly reduce fuel consumption and save users a lot of costs.

Cai Xukun became the first producer of cross-border, Yang Zi removed Qin Junjie from customs, causing heated discussions

　　　　　　　The new version of the #Star Power List #was officially launched. The list consists of four regional lists: the mainland list, the Hong Kong, Macao and Taiwan list, the Asia-Pacific list, and the European and American list, as well as the Rookie Star Ranking for future rising stars. It relies on Weibo data to count the number of reads, interactions, social influence, and fan love value (sending flowers) indices. Several indicators are converted and accumulated according to the corresponding weight ratio, and the final result generates the overall list ranking of each region. Click to enter the full list > > > >

　　The third issue of the Star Power List in 2019 was released. The top three on the mainland list in this issue were Cai Xukun, Zhu Yilong, Bai Yu, Zhao Wei, Yang Zi, and Wang Junkai, followed by Chen Linong in the Hong Kong, Macao, and Taiwan lists. Lin Junjie and Wang Jiaer won the second and third places. Ouyang Nana, Yan Yalun, and Lin Yanjun also achieved good results. The first place in the Asia-Pacific list was won by Sunnee, a member of the Rocket Girl. You Changjing, Pianzhi Liangtai, Kimura Takuya, and Dimaxi successively entered the top of the list. Troye-Sivan, EmmaDumont, and TaylorSwift, the champions of the European and American lists, won the second and third places respectively. In addition, Bi Wenjun, the champion of the Rookie Star Ranking in this issue, was followed by Jin Han and Ding Chengxin, a member of the Typhoon Youth Group Let’s take a look at the entertainment events that took place last week!

　　At 17:00 on January 18, Cai Xukun released the first installment of the star producer’s micro-plan S-level personal growth documentary "Cai Xukun’s Unfinished" on his personal Weibo. Once the show was released, it attracted enthusiastic attention from fans and netizens. "Cai Xukun’s Unfinished" is the first personal growth documentary of the star producer’s micro-plan S-level produced by Weibo & Sina Entertainment. Cai Xukun, who crossed the border as a producer for the first time, hopes to review his childhood, embrace the present, and challenge the future after the new year of 20 years. In the twelve episodes of the program, Cai Xukun will bring his own wish list to complete the unfinished, missing and hoped-to-complete wishes and challenges. Cai Xukun will bring everyone to experience a more diverse world and see more possibilities for themselves.

　　On January 19, the family fun movie "Detective Pu Songling" starring Jackie Chan, which will be released on the first day of the new year in 2019, held a Chinese New Year group visit. Producer Liu Xiaoguang, director Yan Jia, and starring Ruan Jingtian, Zhong Chuxi, Lin Baihong, Lin Peng, Qiao Shan, Pan Changjiang, and Luu Brothers sang and danced to pay New Year’s greetings in advance. The theme song "Laugh Together" of "Detective Pu Songling" sung by Jackie Chan and Cai Xukun has been widely praised since its release. The dynamic and magical melodies and catchy lyrics have brought a good mood for the New Year in advance. Talking about the cooperation with Cai Xukun, Jackie Chan said with a smile: "Immediately 20 years younger, they are all singing and dancing. I prefer to sing the more lyrical ones, and when I sing these, I will be young."

　　Recently, Zhao Wei’s fans will send support gifts to Zhao Wei, who is working hard to rehearse the play, to express their feelings. Not only are there appetizing fruit drinks, but also warm fat sea and black wolfberry, which are super warm! Zhao Wei also immediately left a message to express her gratitude, and euphemistically expressed that she would not send any more, and also laughed that she finally lost weight.

　　The netizens are all Sherlock Holmes series! On January 18, some netizens posted that they found that Yang Zi had cleared Qin Junjie and deleted his related Weibo. By checking the friends who followed Yang Zi and Qin Junjie, netizens found that Yang Zi had indeed cleared Qin Junjie, and Qin Junjie was still paying attention to Yang Zi. Searching for "Qin Junjie" on Yang Zi Weibo showed 0 content, while Qin Junjie Weibo also had Yang Zi related content, including the birthday celebration Weibo posted for him. In addition, the two publicly fell in love on February 16, 2017. Yang Zi has deleted the Weibo, and Qin Junjie still retains it.

　　It is reported that on the afternoon of August 12, 18, Yang Zi Studio and Qin Junjie Studio jointly issued a statement announcing that Yang Zi and Qin Junjie had broken up, saying that the two had ended their relationship and become friends again. The two had collaborated on "The Legend of the Dragon Ball" and "The Infernal Affairs", and officially announced their relationship on February 16, 2017.

　　Chen Linong has been very popular since his debut. Recently, he shared his work routine on Weibo. In the video, Chen Linong is wearing a blue sweater and stands in the rain. It takes a while to run towards the camera. He also jokingly captioned "It’s cold and rainy, please take good care of yourself, don’t get wet like me. My love is deep and heavy!" Weibo received an enthusiastic response from fans.

　　A few days ago, Ouyang Nana participated in Game LIVE. Interestingly, she seemed to rarely play games. Yesterday, during the live broadcast, she suddenly shouted "Someone hit me, brother" and asked her teammates for help. Unexpectedly, her teammates told her, "That was your own shot."

　　netizens have left messages to discuss: "Will I be so nervous that I can’t even press a gun", "Nabi, there are really too few people like you who seriously call playing games as work.", "In the live broadcast, Ouyang Nana is really cute and real, but there are some dishes", "Why can Ouyang Nana’s gun be a powder drop?"; There are also netizens discussing game accounts, "I also met’Wuhan Peng Yuyan ‘is also a real person?", "Who would have thought that my chicken eater’s name is Hu Ge", "I am Shanwei Liang Jingru", "It seems that Ying Cai’er in Chaoyang District is Ying Cai’er herself".

　　If you have a dream, you have to realize it! Sunnee sent a Weibo to sign up for "Singer" a few days ago, and wrote emotionally: "I was confused for 7 years and just wanted to get a stage to sing. Last year, I got a good opportunity to show my singing and performance. After that, many people asked me: What do you want to do in the future? I always said without hesitation: I want to be a singer! Although I am not perfect yet, my love for music is not deceiving. In my heart, a stage is really important." Her determination has also received strong support from fans and friends.

　　In addition, according to foreign media reports, when Kim Kardashian was asked about her old grudge with Taylor Swift in the latest interview, Dafang said that it has been "turned over": It’s all over. Kardashian said in the interview that although the two sides have not privately discussed all kinds of rivalry wars, she believes that both of them have put aside the past and choose to look forward. ("Over it, We’ve all moved on.")

　　In addition, the current Rookie Star Ranking champion Bi Wenjun, followed by Jin Han and Typhoon Junior Team member Ding Chengxin.