Pulmonary nodule has become a high-frequency word on the physical examination list. People pay attention to pulmonary nodules, even to the point of panic, all because part of the nodules is early lung cancer. Especially when the word "ground glass" appears in the inspection report, the patient is more anxious and thinks that the difference is cancer.

　　Chen Liang, director of the Department of Thoracic Surgery of jiangsu province hospital (the First Affiliated Hospital of Nanjing Medical University), told the reporter that with the increase of cases, the medical consensus on pulmonary nodules is constantly being updated. Now the ground-glass nodules have been classified into the "relative safety zone". As long as the word "ground glass" appears, the nodules are inert, so patients need not be afraid, just follow up regularly. In this big coffee health class, let’s learn more about pulmonary nodules!　 　

　　With the word "ground glass", nodules are inert.

　　"Many lung cancers are developed from ground glass nodules!" "Be careful when there are solid components in ground glass nodules, and the malignant probability of semi-ground and semi-solid nodules is the highest!" — — This is the main point that will be mentioned in many popular science of pulmonary nodules before. If there is a "ground glass nodule" on the physical examination list, the fear of patients with pulmonary nodules will escalate. Director Chen Liang told Yangzi Evening News/Zi Niu News reporter that this concept needs to be updated. There are ground glass nodules, but it is relatively safe.

　　Director Chen Liang explained that infectious diseases such as tuberculosis and fungal infection and chronic inflammation may produce nodules on the lungs. Ground-glass nodules are flaky blurred shadows that we can see on chest CT, just like ground glass. Ground glass nodules are divided into "pure grinding" and "mixed grinding". The diameter of pure ground glass nodules within two centimeters in the international guidelines can be followed up; There are ground glass components and some solid components in the "mixed grinding". The guidelines for this kind of nodules also stipulate that: if the diameter is less than 6 mm, there is no need for follow-up or annual follow-up; 6-8 mm, it is recommended to follow up once every 6-12 months; Those larger than 8 mm are followed up every 3-6 months.

　　The observation and summary of pulmonary nodules in medicine are also updated. The consensus now is that even if it is already an invasive adenocarcinoma, as long as there is ground glass, it is a low-grade malignant and inert tumor, and the surgical prognosis is excellent.

　　Don’t intervene too early, even minimally invasive surgery is invasive.

　　Director Chen Liang said that such patients are often encountered in outpatient clinics. This hospital found nodules by filming and quickly went to a large hospital for enhanced CT or even PET-CT；. Some patients will give an example, "Some people around me have nodules smaller than me, and they are all malignant", so they strongly demand surgery. There will also be patients with three or four millimeters of nodule reports coming from other places to "seek an answer".

　　Patients often want big experts to determine whether their nodules are cancer. "But the eyes of experts are not microscopes, and sometimes they can’t completely determine whether they are benign or malignant." Director Chen Liang said, is it possible that two or three millimeters of nodules are malignant or have malignant "potential"? It’s a small chance, but it’s possible, but is it wrong for the doctor not to operate? Not really. When a doctor watches a film, what he really needs to grasp is the opportunity of intervention, so as to make the patient benefit the most.

　　Small nodules of 3-4 mm, some hospitals and doctors may also advise patients to operate, which is actually overtreatment. Minimally invasive surgery is also invasive, and there will be injuries. It is definitely not the optimal solution to let patients who could have been "calm" for several years, more than ten years, or even without intervention for life, bear surgical injuries and various risks prematurely.

　　Director Chen Liang, for example, said that the patients with pulmonary nodules who were followed up in his hand were suspected to be carcinoma in situ. After 12 years of observation, it was confirmed that they were still carcinoma in situ after surgery. "Atypical hyperplasia, cancer in situ, now think they are precancerous lesions, not cancer. From carcinoma in situ to minimally invasive carcinoma, it seems to be ‘ Advanced ’ In fact, they are only 1-2 mm apart, and the progress is very slow. Many patients are followed up for 5-10 years, and grasping the indications and timely surgery will not affect their health. " Director Chen Liang said that they spend the most time in outpatient clinics, but instead advise patients not to worry, and they can afford to wait.

　　Big coffee biography

　　Chen Liang, director of thoracic surgery department of the First Affiliated Hospital of Nanjing Medical University, chairman of the thoracic surgery branch of Jiangsu Medical Association, and president-designate of the thoracic surgeon branch of Jiangsu Medical Association. Committed to the surgical treatment of early lung cancer, he is good at the diagnosis and treatment of thoracic surgery-related diseases, especially lung segments. He has completed more than 1,500 cases of thoracoscopic anatomical pneumonectomy, including more than 500 cases of segmental pneumonectomy and subsegmental pneumonectomy. Thoracoscopic subsegmental pneumonectomy was reported for the first time in the world, which was widely recognized by people in the industry. He has performed surgical demonstrations at conferences at home and abroad for many times, and his technology has spread throughout the country and even abroad. Successfully performed the world’s first mixed reality (MR) assisted lung tumor resection; In China, the concept of "accurate pneumonectomy under the guidance of 3D-CTBA" was first put forward, and the first 3D-CTBA reconstruction system, DeepInsight, was developed in cooperation with Neusoft Company, and the software was successfully copyrighted, which has been widely used in China, including Taiwan Province. He has made many special reports and surgical demonstrations at international and domestic thoracic surgery conferences, and is committed to promoting accurate thoracoscopic pneumonectomy.

　　He presided over the compilation of the first Atlas of Thoracoscopic Anatomical Segmental Pulmonary Resection in China and the first Atlas of Endoscopic Anatomical Segmental Pulmonary Resection in the world.

　　The image is hanging in the air, and it can be seen synchronously 30 kilometers away from here.

　　What kind of nodule needs surgery? Director Chen Liang said that there are "standards" in domestic and foreign guidelines at present. Generally speaking, surgery will only be considered if it is greater than 8 mm. If the nodule is suspected to be carcinoma in situ, micro-invasive carcinoma, or the size, shape and density of the nodule change, follow-up or elective surgery can be selected. If the nodule is located at the periphery of the lung, it is easier to handle, and local resection can be used, with little damage to the lung; If the position is deep, the pulmonary vessels and bronchi may be damaged during the "forced" resection, resulting in postoperative hemoptysis, limited lung expansion and other complications. "At present, minimally invasive surgery has been able to achieve anatomical lung resection, that is, to dissect a lung segment from the lung lobe, while ensuring the margin and minimizing the damage." Jiangsu province hospital is one of the earliest hospitals in China to carry out pneumonectomy, and has trained many domestic thoracic surgeons. The "Anatomical pneumonectomy course" of thoracic surgery has just passed the final certification of the Royal College of Surgeons, and it is also the first training course of pneumonectomy in the world.

　　In 2017, jiangsu province hospital Thoracic Surgery completed the world’s first thoracoscopic segmental resection of early lung cancer assisted by mixed reality (MR) technology. In 2019, with the help of 5G technology, the first international 5G+MR remote real-time combined segmental pneumonectomy was completed. Under MR technology, after the doctor wears special glasses, the lung image data is "dragged" from the computer screen through artificial intelligence three-dimensional reconstruction, suspended in the air and shared in real time. Director Chen Liang, who is in the hospital headquarters, can mark the image remotely with voice and marker pen, and every instruction detail will appear clearly and without delay in the operating field of the surgeon in the operating room of Pukou Branch, 30 kilometers away. With the support of new technology, the treatment of pulmonary nodules can be more and more minimally invasive and accurate, and difficult remote surgery has also become possible.

　　See the real pulmonary nodules from the numbers.

　　Director Chen Liang said that jiangsu province hospital Thoracic Surgery conducted a cohort study of lung cancer in the physical examination center of the hospital. From May 2019 to 2020 (except January-March of the COVID-19 epidemic), a total of 10,225 cases were examined by CT, of which the nodule detection rate was 74.1%, and lung cancer confirmed by pathology accounted for three thousandths of the total number of people examined. It can be seen from this data that the proportion of cancer in pulmonary nodules is still not high.

　　At the same time, the number of pulmonary nodule operations in jiangsu province hospital was 1,836 in 2016 and 4,393 in 2020, an increase of 139% in five years. At present, the malignant rate of surgical patients is more than 90%.

　　The increase of pulmonary nodule cases is mainly related to the increase of incidence, the increase of detection rate after the improvement of imaging examination accuracy and the early diagnosis.

What new car can I buy for 70,000-90,000 yuan? In the era of fuel vehicles, we blurted out "Honda, Volkswagen and Toyota to dazzle" three musketeers. In the era of new energy vehicles, BYD directly penetrated the industry threshold at a price of 73,800-89,800 yuan. In the field of small hatchback, BYD Seagull can be regarded as a pure electric flat replacement model of Honda Fit. Although BYD Seagull is positioned as a large-sized micro electric vehicle (close to the size wheelbase of a small car), its interior space performance is close to that of Honda Fit and Volkswagen Polo due to its unique body structure and power layout based on BYD e platform 3.0.

Today, the team leader commented on the 2023 BYD Seagull Free Edition, which is a mid-range model of Seagull. There is no discount at the terminal, and the guide price is 78,800 yuan.

Model: BYD Seagull Free Edition.

Guide price (i.e. bare car price): 78,800 yuan.

The length of the vehicle is 3780mm/ the wheelbase is 2500mm/ the single motor is 75hp /CLTC has a battery life of 305km.

[Satisfied]

The appearance is relatively neutral, and the body structure presents a quite good sense of movement. Because the weight of the vehicle is small and it is an electric vehicle, its dynamic response is fast, the shift is completely without setbacks, the acceleration is very linear, the start is very silky, and there is no noise from the engine, so its quietness has a natural advantage. In addition, the interior materials of this car are also excellent, equipped with leather steering wheel and leather sports style seats, as well as 7-inch full LCD instrument and 10.1-inch central control panel. In this price level, this free version of Seagull is richer and safer than the joint venture car. Seagull comes standard with 4 airbags and front and rear penetrating side air curtains, ESP electronic vehicle stability system, EPB electronic parking, reversing image, cruise control, and the free version is equipped with 16-inch aluminum alloy wheels, ultrasonic radar, satellite navigation, keyless start/entry, external discharge and other equipment functions.

[dissatisfied]

Seagull’s chassis has a general texture and a certain degree of comfort, which is suitable for driving on urban roads. It runs on unpaved roads, and small bumps are not well filtered out. The trunk space is a little small, which is equivalent to sacrificing the trunk for the back row space, and the trunk is not high enough to put much things. Finally, the interior of the new car stage smells very bad, because there are many plastic materials, and there will be a choking smell after exposure.

[Power consumption]

At present, the power consumption per 100 kilometers of this car is 13kWh, because it needs to turn on air conditioning and refrigeration in summer, and the battery life is discounted, basically around 200 kilometers.

[Driving experience]

Seagull is a particularly easy-to-operate vehicle. One is that it is small in size and it is not difficult to drive. Then it has a fast starting speed, light and easy steering and sensitive braking, which is quite suitable for novice drivers and girls. However, it should be noted that after the car starts running, it is necessary to control the turning range, and the roll angle of the car is limited.

[Summary]

BYD Seagull can well replace Honda Fit and Volkswagen Polo, after all, the price is less than 80,000 yuan. It has smooth acceleration performance and quiet driving/riding environment, and it is relatively easy to drive. It only relies on electric power to drive, which is equivalent to saving fuel and money. The cost of using a car is very low, and it costs several yuan for driving 100 kilometers. Generally speaking, this car is very suitable for buying vegetables and taking children to and from school.

　　Core reading

　　Recently, nine China projects were successfully selected as "50 tunnel projects with global influence in the past 50 years", which attracted attention.

　　A series of tunnels that drill mountains, cross rivers and cross seas have helped to form a railway network of 159,000 kilometers, a high-speed rail network of 45,000 kilometers, a highway network of 5.441 million kilometers and a high-speed network of 184,000 kilometers, connecting the flowing China, witnessing economic development and demonstrating scientific and technological strength.

　　The world’s longest highway spiral tunnel, the world’s highest high-speed rail tunnel, and the world’s largest single-pipe double-layer tunnel … Today, China has built more than 50,000 kilometers of railway tunnels and highway tunnels, opening up the "throat" and forming the world’s largest high-speed railway network and expressway network.

　　Recently, at the 2024 World Tunnel Congress held in Shenzhen, the International Tunnels and Underground Space Association (hereinafter referred to as "ITA") released "50 tunnel projects with global influence in the past 50 years", and 9 China projects were successfully selected, with the largest number and the highest proportion.

　　Many tunnel projects broke the world record.

　　From old to new, witness the technological changes of China tunnel.

　　Chengdu-kunming railway Chamarat Da Tunnel, Beijing-Guangzhou Railway Heng-Guang Double Track Dayaoshan Tunnel, Xikang Railway Qinling Tunnel, Qinghai-Tibet Railway Xinguanjiao Tunnel, Hong Kong-Zhuhai-Macao Bridge Immersed Tunnel, Shenzhen Metro Line 14, Shenzhen-China Channel Cross-Harbour Tunnel, Qingdao Jiaozhou Bay Second Cross-Harbour Highway Tunnel … The selected China Project has witnessed the development and changes of China tunnel technology in recent decades.

　　Chamarat Da Tunnel, a controlled project in chengdu-kunming railway, is located at an altitude of more than 2,200 meters, which has been recognized as a "forbidden zone" by foreign geologists, and underground rivers, faults and mudslides can be seen everywhere.

　　In March, 1959, the Chamarat Dada Tunnel was started, and it was blasted with a sledgehammer and steel drill, often only half a meter a day. It was under such difficult conditions that the Chamarat Da Tunnel was successfully completed in November 1966, which helped chengdu-kunming railway to open to traffic successfully.

　　"In order to sacrifice more ambitions and dare to teach the sun and the moon to change into a new sky," Chamarat Da Tunnel laid the spirit that China tunnel people are not afraid of hardship, fatigue and being the first. " Yan Jinxiu, former chairman of the International Tunneling Association and chief expert of China Railway Research Institute, said.

　　Dayaoshan Tunnel, the key tunnel of Beijing-Guangzhou Railway Hengguang Double Track, with a total length of 14.295 kilometers, is the first super-long double-track electrified railway tunnel in China.

　　"Dayaoshan Tunnel has to cross dozens of large and small faults. The rock stratum is broken, the stability is extremely poor, and the water permeability is extremely strong. The disturbance caused by tunnel construction to the mountain is very easy to cause collapse and mud gushing." The relevant person in charge of the China Railway Tunnel Bureau recalled that if you want to build the Dayaoshan Tunnel, the old method will not work and you must ponder and innovate.

　　To this end, China Railway Tunnel Bureau actively carried out technological innovation, introduced advanced technology and equipment, and adopted the brand-new construction technology "New Austrian Tunneling Method" to build Dayaoshan Tunnel, creating 11 records. In 1992, Dayaoshan Tunnel won the national special prize for scientific and technological progress, leading China’s tunnel construction to achieve a breakthrough in the whole system.

　　Since then, China tunnel technology has grown rapidly.

　　Qinling Tunnel, a controlled project of Xikang Railway, is the first railway tunnel constructed by full-face tunneling machine (TBM) in China, which indicates that tunnel construction in China has entered the stage of shield /TBM factory construction.

　　Xinguanjiao Tunnel, the control project of the second line of Xi (Ning) Ge (Ermu) of Qinghai-Tibet Railway, is the first time in the history of tunnel construction to build a tunnel with a length of more than 30 kilometers at an altitude of more than 3000 meters and under the complex geological environment of Qinghai-Tibet Plateau.

　　The immersed tube tunnel of Hong Kong-Zhuhai-Macao Bridge is the longest highway immersed tube tunnel and the only deep-buried immersed tube tunnel in the world, and it is also the first immersed tube tunnel in the open sea in China. The submarine part of the tunnel is about 5664 meters, which consists of 33 giant immersed tubes and a final joint of a closure section. The maximum installation depth is over 40 meters, and it is called Mount Everest in traffic engineering.

　　The deep middle passage subsea tunnel is about 6.8 kilometers long, of which the immersed tube tunnel is about 5 kilometers long, which is the longest and widest immersed tube tunnel with steel shell and concrete in the world.

　　"In 1990, when China held the World Tunnel Conference for the first time, it received help from all countries in the world." Yan Jinxiu proudly said that 34 years later, after a lot of engineering practice, we have accumulated a number of innovative achievements and experiences, which can be shared with our peers in the world.

　　The scale of tunnel construction has increased rapidly.

　　Form the world’s largest high-speed railway network and expressway network.

　　From 1990 to now, in the past 34 years, the scale of tunnel construction in China has increased by 24 times, and the construction mileage has exceeded half of the world total.

　　Today, more than 50,000 kilometers of railway tunnels and highway tunnels have been built in China, opening up the "throat artery" and forming the world’s largest high-speed railway network and expressway network.

　　Data show that by the end of 2023, there were 18,573 railway tunnels in operation, with a total length of 23,508 kilometers. Among them, there are 4,561 high-speed railway tunnels with a total length of 7,735 kilometers. By the end of 2022, there were 24,850 highway tunnels in operation, with a total length of 26,784,300 linear meters.

　　The road network is extended and the train is speeding. In the first quarter of this year, the national railways sent 1.014 billion passengers, with an average of 11.147 million passengers per day, a year-on-year increase of 28.5%. During the "May 1" holiday, there were 1.358 billion people moving across regions in the whole society, showing the surging momentum of China’s economy.

　　In today’s China, 8,543 kilometers of subway have been built, which has significantly improved the operation efficiency of the city and greatly facilitated people’s travel.

　　Take Shenzhen as an example, the land area is less than 2,000 square kilometers, and the actual management service population exceeds 21 million. By continuously expanding the development space underground, people’s lives are facilitated.

　　By the end of 2023, the operating mileage of Shenzhen urban rail transit network (including trams) has increased to 567.1 km, and the number of stations has increased to 393 (including interchange stations, excluding Fulin stations). The density of urban rail transit network (calculated by administrative area) has reached 0.28 km/km2. In 2023, the rail transit (including trams) network in Shenzhen transported about 2.711 billion passengers, and the passenger traffic increased by over 56% year-on-year.

　　Today, China has built 5,100 kilometers of underground utility tunnel, which has strongly promoted the intensive development of the city and enhanced its resilience.

　　Xiong’an new area is the first city in China to adopt all-underground utility tunnel. In Rongdong District, the first centralized built-up area in the new district, there are no manhole covers and wires on the street, and all pipelines such as electricity, gas, water supply and signals enter the underground utility tunnel.

　　Relying on the new generation of information technologies such as big data and Internet of Things, the pipe gallery builds a wireless Internet of Things sensing network, builds a smart operation and maintenance platform, conducts online and offline inspections, and pursues safe, intelligent, accurate and efficient operation. Not only xiong’an new area, but also Beijing, Chongqing, Zhuzhou and other cities have built underground utility tunnel, effectively saving land space and releasing development space.

　　"China has become the country with the largest number of tunnels, the largest construction scale and the fastest development speed in the world today." Ni Hong, Minister of Housing and Urban-Rural Development, said that the construction of tunnels and underground projects has made the best use of land and the smooth flow of goods, promoted rapid economic and social development, effectively improved people’s livelihood and played an important role in Chinese modernization.

　　March towards full automation and intelligence

　　China tunnel construction has entered the stage of complete independent innovation.

　　"Now, we can proudly say that China’s tunnel construction concept and construction method have reached the world leading level." Yan Jinxiu said, especially the tunnel construction equipment represented by the large shield is all localized, and the extreme technical challenge represented by crossing the river and crossing the ocean and deep-buried tunnels on the plateau, the tunnel construction in China has entered the stage of completely independent innovation, marching towards a higher level of full automation and intelligence.

　　On the morning of April 29th, with the slow rotation of the cutter head of the "Pilotage" shield machine, it marked that Chongtai Yangtze River Tunnel entered the stage of shield construction in an all-round way, and started the journey of single-headed tunneling across the Yangtze River with super-large diameter shield.

　　It is reported that the "Pilotage" shield machine has to work 89 meters underwater in the Yangtze River, heading 11.3255 kilometers with its own head, connecting Chongming in Shanghai and Taicang in Jiangsu, and realizing the high-speed rail crossing the river without slowing down for the first time.

　　Not only Chongtai Yangtze River Tunnel, but also many large-section tunnels under construction in China, such as Suzhou East Tunnel, a new Nantong-Ningbo high-speed railway, which is known as "the first urban high-speed railway tunnel in China"; Jintang subsea tunnel of Ningbo-Zhoushan Railway is the longest subsea high-speed rail tunnel in the world.

　　It is one of the characteristics of China tunnel construction to challenge the tunnel engineering under more complicated geology. Gaoligongshan Tunnel is one of them.

　　As a control project for the entire line of the Da-Rui Railway, Gaoligongshan Tunnel is the first extra-long railway tunnel in the world to cross the Hengduan Mountains. The maximum buried depth of the tunnel is 1,155 meters, and there are as many as 18 kinds of strata that the whole tunnel passes through, including 19 fault zones, which can be called the "geological museum" in the history of railway construction, covering almost all the unfavorable geology and major risks of tunnel construction.

　　As of May 5, the main tunnel of Gaoligongshan Tunnel has completed 17.8 kilometers, leaving 16.7 kilometers; The parallel pilot tunnel completed 18.1 kilometers, leaving 16.4 kilometers.

　　The China Railway Tunnel Bureau is responsible for the construction of this tunnel. "The China Railway Tunnel Bureau participated in the construction of seven of the eight projects shortlisted in Chinese mainland, and the Gaoligongshan Tunnel is our new milestone." The relevant person in charge of the China Railway Tunnel Bureau said.

　　A few days ago, more than 30 international tunnel experts attending the World Tunnel Conference specially rushed to the shield tunnel section of Shenzhen Qianhuang Section of Guangzhou-Dongguan-Shenzhen Intercity Railway for a visit. "In just 3.5 kilometers, this tunnel has to pass through 28 major risk points such as high-speed rail and subway lines, and 128 pipelines. It is the shield tunnel project with the highest comprehensive risk and the most difficult construction among similar projects at home and abroad." Liu Ziming, project leader of China Railway 22 nd Bureau Group, said.

　　"At present, global tunnels and underground projects are still in a period of rapid development, with broad development space." Chen Yun, Party Secretary and Chairman of China Railway Engineering Group Co., Ltd. said that in the future, China tunnel workers will not only build ultra-deep, ultra-long and ultra-complex tunnel projects and underground spaces with larger sections and deeper burial depth, but also devote themselves to practicing the concept of green and low-carbon development, actively develop intelligent construction and intelligent operation and maintenance, and build a world-class tunnel project.

　　Layout design: Wang Zheping, Shen Yiling

　　People’s Daily (May 8, 2024, 07 edition)

　　Editor’s Note: The 5th world internet conference opened in Wuzhen, Zhejiang on November 7th, and the Supreme Leader of president sent a congratulatory letter. The Supreme Leader pointed out that today’s world is experiencing a broader and deeper scientific and technological revolution and industrial transformation.

　　Facing the changes and challenges of the global Internet, what kind of answer will China give? The world is looking forward to it..

　　In different historical stages of the development of human society, the social production network has been expanding, from one country to many countries, and from many countries to the final globalization. In this process, the social production network has become increasingly complicated in space, between industries and even within products. At the same time, the key content of production network exchange has gradually changed from agricultural products, industrial products and capital flow to data flow and information flow. Economic powers also show different industrial characteristics at different stages: agricultural power, industrial power, trade power and financial power. Under the background of the internet age, information flow and data flow are becoming new means of production, and at the same time, they are becoming more and more important contents of national security, and economic powers will increasingly rely on network powers.

　　The world today is experiencing an information revolution, which will bring another qualitative leap in productivity and have a profound impact on the development of international politics, economy, culture, society, ecology and military affairs. China must seize this historical opportunity, and use information flow to drive the flow of technology, capital, talents and materials to promote high-quality economic development. China has its own unique advantages in building a network power.

　　China has the advantage of market scale in building a network power.

　　The network has the characteristics of increasing marginal revenue. Every time a new user is added to the network, its scale revenue will be greater. China has a population of nearly 1.4 billion, and the existing Internet users and mobile phone users are huge. From children to the elderly, almost everyone can use smart phones. China’s population advantage is a huge supporting force for building a network power, which is an innate condition that many developed countries in the world do not have. There are world-class Internet companies like Ali and Tencent in China, which is inseparable from the huge domestic market in China. Making full use of population advantages and giving full play to the role of population base can make China’s network power construction get twice the result with half the effort and form a huge scale effect on economic development.

　　Today’s network era is already different from the traditional free Internet era, and innovations in content and form have spawned various profit models. The network era will not bury anyone’s talent, and every participant can use the network to create wealth. They are both creators and users of Internet services. Therefore, building an all-round cyberspace and expanding the coverage of network infrastructure can make China’s market scale advantage play to the greatest extent in the construction of a network power.

　　Building a strong network requires higher talents and infrastructure.

　　The characteristics of a network power are as follows: a country has strong technical strength, strong ability to resist network risks and network governance, which can achieve a high level of network efficiency as well as a high level of network security. No matter what stage of social development, talents and infrastructure are two important pillars of building an economic power. The innovation ability of the former depends on the national talent training and incentive system, while the latter depends on the government’s investment, supervision and maintenance of infrastructure. The construction of a network power still needs to rely on the construction of Internet talents and network infrastructure.

　　For a micro-enterprise, the Internet is first and foremost a technology-intensive industry, which cannot be supported by first-class technical talents. After more than 20 years of unremitting efforts, China has gained gratifying achievements and rich technical experience and professionals in the field of Internet technology. Since 2003, the number of related patents applied by China has increased by 10% year by year. Stimulated by market demand, a large number of college graduates flock to Internet enterprises after graduation, providing a large number of IT talents for the Internet industry. The younger talent team is more conducive to technological progress and innovation. In 2017, among the top ten Internet companies in the world ranked by market value, China’s Alibaba, Tencent, Baidu and JD.COM occupied four of them. China’s Internet practice and innovation is based on its own national conditions, permeating all aspects of people’s daily life, and basic production and life have been closely linked with intelligent networks. However, although the total resources of Internet science and technology talents in China are large, high-end technical talents are still scarce resources.

　　For a country, especially for a big country like China, the construction of a network power has put forward higher requirements for infrastructure. The infrastructure referred to by a network power includes not only telecommunications and Internet infrastructure construction in a narrow sense, but also the interaction between the network economy and the real economy. Network infrastructure also includes network basic theory and core technology, as well as related facilities related to network security. For example, information infrastructure network security protection, network security information co-ordination mechanism, means and platform. "To get rich, build roads first", and network infrastructure is the "highway" in today’s information age.

　　The essence of a network power is an information technology power. Network development is supported by technology, and the core technology is the biggest difficulty that restricts China’s construction into a network power. With the core technology, we can have a comparative advantage in technology, from following developed countries to completing "overtaking in corners". The birth of the core technology is to try it out through massive trial and error. This not only requires that the scientific research assessment mechanism should be inclusive and allow researchers to fail; But also put forward higher requirements for the financing mechanism, that is, the financing mechanism should also be inclusive and tolerant of repeated failures in technical research. Therefore, our scientific research assessment mechanism should be reformed, from short-term and high-frequency assessment to longer-term assessment, from quantitative assessment to quality assessment and peer reputation assessment. In addition, for the financing mechanism, it also requires the development of equity financing, the development of multi-level capital markets, and the change of the financing structure mainly relying on bank loans.

　　China’s construction of a network power is facing the problem of integration with the real economy

　　Undoubtedly, the development of the Internet has played a positive role in promoting economic development, but at the same time, new technologies will have an impact on traditional industries. This "creative destruction" of the network economy has also caused a certain degree of impact on the real economy. For example, the retail service industry tends to weaken under the impact of the Internet. We need to understand this contradiction from two aspects: on the one hand, like other new technologies and new production methods in history, network technology has improved the efficiency of information flow and production, and it is the "cake" of the whole economic output. The distribution problems arising in this process require the state to maintain basic social equity through taxation, subsidies and redistribution; On the other hand, the real economy and the Internet can achieve a benign interaction and achieve a win-win situation for both sides.

　　(The author is a researcher at the Institute of World Economics and Politics, Chinese Academy of Social Sciences, and director of the Economic Development Research Office, distinguished professor, City University of Macau)

The richness of a car configuration is related to the user’s car experience, so many people are concerned about its configuration today. As for its advantages, please read on.

Let’s take a look at the appearance of the Warrior 917. The front face of the Warrior 917 has improved the grade of the whole vehicle, which makes people unforgettable. Headlights are young and look very visually impactful. The car is equipped with LED daytime running lights, front fog lights, automatic opening and closing, adaptive far and near light and so on. Come to the car side, the car body size is 5052MM*2150MM*2059MM, the car uses fashionable and simple lines, the car side looks very capable, with large-sized thick-walled tires, the shape is quite full. In the rear part, the rear line of Warrior 917 is rounded, the taillights look sporty and the overall layout is impressive.

In terms of interior, the interior modeling has taken a tough route and is rich in functions. The steering wheel of the car is very in line with the interior style, and it is made of genuine leather, which is not bad in practicality and value. From the central control point of view, the car is equipped with a touch-sensitive LCD central control screen with young personality, which makes the interior style impressive and energetic. The interior feels good. Let’s take a look at the dashboard and seats. The dashboard of the car presents a simple design style and the shape takes the sports route. The car uses leather seats, equipped with auxiliary seats with memory electric adjustment, seat with memory electric adjustment, seat proportion tilting and other functions, which further improves the comfort of drivers and passengers.

Warrior 917 has good space in the back row, and it is no problem to meet the daily travel needs. In addition, the car is equipped with fatigue warning, anti-lock braking (ABS), LED daytime running lights, brake assist (EBA/BAS, etc.), brake force distribution (EBD) main driver airbag, co-pilot airbag, side airbag curtain, front side airbag and other safety configurations.

Do you have a lot of ideas after reading today’s story? This class of cars can often give consideration to both cost performance and practicality, and is often considered by most consumers as the first choice when buying a car.

When it comes to Huawei HarmonyOS system, it is estimated that many people are familiar with it. As a distributed operating system, HarmonyOS system has been built into Huawei Smart Screen, Huawei Watch, Jiuyang, Midea and other products, and HarmonyOS system of mobile phone is currently being tested. It is estimated that most Huawei HONOR can upgrade HarmonyOS system soon. As an operating system different from IOS and Android, the biggest advantage of HarmonyOS system is that it can connect different devices in series through the system to create a real smart home system with everything connected. Today, the product from Huawei Ecology, Puffin Smart Camera Pro, is a product with built-in HarmonyOS system.

In addition to the built-in HarmonyOS system, this puffin smart camera Pro also has many functions such as built-in storage, 2K HD image quality, push-to-talk and AI intelligent monitoring.

The appearance of the puffin smart camera Pro is still very cute, and the dark "big eyes" are very eye-catching. Replacing the yellow ear accessories inside the accessories can definitely sprout your heart.

In addition to the lens, there is also a microphone and photosensitive sensor on the big eyes. With the rotating pan/tilt at the bottom, the puffin smart camera Pro can move around 360 and move up and down 150, and the monitoring field of view is still good.

The circumference of big eyes is decorated with a circle of silver vertical lines.

The push-to-talk function is my personal favorite function. If there are old people or children at home, this function is very useful. In addition to checking the situation at home through the camera, you can also talk to the old people or children at home directly through the mobile phone client.

And from the experience, the one-click call quality of this puffin smart camera Pro is still very good, the call sound is clear, and the noise is almost negligible.

The back of the puffin smart camera Pro is a speaker and a charging port, and the charging port uses a mic USB port, which is more perfect if a TypeC port is used.

The lower position of the camera body is the rotating pan/tilt, and the Pro(32GB) version of the puffin smart camera supports 360 panoramic cruise and 64GB supports stepless tracking.

There is a mounting slot at the bottom of the camera, and there is a circle of non-slip silicone pad design.

Huawei’s eco-chain products naturally support Huawei link. Through the Huawei Smart Life APP client, it is very convenient to directly add devices and set the binding of devices.

As an ecological product of Huawei, this puffin smart camera Pro has a powerful HiSilicon processor chip built in, and has powerful AI intelligent detection functions, such as human figure detection, face recognition, crying detection and so on. When the camera finds someone moving or entering, it will automatically record and save it, and push the situation to the user through mobile phone or WeChat. Prevent accidents.

Moreover, thanks to the powerful cloud computing capability of Hisilicon, the puffin smart camera Pro can accurately classify events, which is convenient for users to find.

As a camera product, in addition to ensuring safety, many users will also share the video recorded by the camera with their families, so the quality of the video taken by the camera is also very important. The puffin smart camera Pro supports 2K ultra-high-definition image quality, and with the AI image quality processing ability of Hisilicon chip, the overall picture definition is good. At first, I was worried that 2K ultra-high-definition image quality would not require high network speed, but judging from the 200M network speed of my home mobile, it was still very smooth.

The video quality during the day is good, so what about the video effect in the dark environment? Although the previous camera products also used infrared night vision cameras, the recorded videos were mostly black and white. However, the puffin smart camera Pro supports low-light full-color images, equipped with low-light full-color technology and super-sensitive CMOS, even in the dark environment, it can also present color images, and the image noise is within the acceptable range.

As a camera product equipped with HarmonyOS system, at present, I don’t have other products equipped with HarmonyOS system, such as smart screen, so I can’t experience the great convenience of HarmonyOS system for the time being, such as the seamless connection between camera video and smart screen, etc., but I am looking forward to it in the future.

Puffin Smart Camera Pro also supports the voice control of Huawei mobile phones and Huawei smart speakers. There are just Huawei smart speakers at home, and you can call Xiaoyi through the speakers to turn on and off the camera and make one-click calls.

There is also an NFC tag in the accessory, which supports the NFC-enabled mobile phone. When the NFC function is turned on, touch this tag and directly enter the camera interface.

In addition to being laid flat, the puffin smart camera Pro can also be hung and topped with accessories inside, and users can install it according to their own needs.

As a security product, puffin smart camera Pro personally values the built-in Huawei HarmonyOS system. After all, the Internet of Everything is the development direction of the Internet of Things, and Huawei HarmonyOS system is a good way to fill the gap between different devices and different brands of products. Although I personally can’t experience the advantages of HarmonyOS system due to equipment limitations at present, I believe that this puffin smart camera Pro will definitely play an increasingly important role in guarding family safety in the near future.