标签： 上海龙凤千花1314

[Four-wheel drive details] In the last issue of the four-wheel drive series, we introduced various types of four-wheel drives and their classification (click to view the basic knowledge of four-wheel drive). In the following articles, we will analyze and test the four-wheel drive models of various brands one by one, and the first article we introduce brands to you, including,,, and so on.

● Jeep brand introduction

The first Jeep in the world was produced in 1941 to meet the requirements of the US military in World War II. It has a history of 73 years. From July 23, 1941 to now, Jeep brand has always insisted on only making SUV models, and left a tough guy image in people’s minds. Today, the Jeep brand has even become synonymous with off-road. It is precisely because of this that Jeep cars have been sold to nearly 100 countries and have many Jeep enthusiasts around the world.

● Jeep origin

Jeep was born out of the Willys)MB model used by the Allied Forces during World War II. In 1940, the U.S. military established the model scheme of Willys MA, and at the same time, borrowed some characteristics of Ford and Bantam, and redesigned the Willys MB off-road vehicle, which made this earliest standardized "Jeep" car.

Once Jeep is used, it has made great achievements. Jeep has played many roles in various war zones: stretcher, machine gun rack, reconnaissance vehicle, light truck, front-line vehicle, gun and ammunition transportation, etc. During the Second World War, about 600,000 Jeeps joined the battle. The name of "Battlefield Taxi" confirmed the success of Jeep products.

Since then, Jeep has entered the era of peace with its innate excellent characteristics, and it has become more and more perfect after repeated improvements. Of course, it has kept its original passion and wildness to this day and become one of the automobile brands. The Jeep trademark registered in 1950 has remained vigorous for more than 60 years.

● Domestic Jeep models for sale and

At present, Jeep brands on sale in China mainly include many models, such as Guide, Freerider, Freelight, Grand Cherokee, herdsman, etc. Different product positioning of each model makes their four-wheel drive system forms different. See the table below for specific classification:

● Test props/test rules

Let’s get to know the pulley block and test rules we used in this test. This pulley block consists of three groups of flat pulleys, and each group of pulleys can determine its locked/opened state through the side locking pin. When a pulley block is locked, the wheels will not slip when passing through the pulley block; On the contrary, when a pulley block is open, the wheels will slip when passing through the pulley block, thus losing power.

We will test each model in three groups. In the first group, two front wheels or two rear wheels of the vehicle are in the pulley block, which can test the inter-axle distribution of different four-wheel drive forms with front drive or rear drive as the mainstay. The second set of tests is to make the diagonal wheel in the pulley block, and the third set is to make all three wheels in the pulley block, and only one front wheel or rear wheel is in contact with the ground. This will test the torque distribution between the front and rear axles of the vehicle and the torque distribution between the left and right respectively.

Fortunately, after the actual test, the above cars can easily complete the first and second sets of tests, so next we will directly show you their performance in the face of three sets of open pulleys.

● Introduction to the structure of four-wheel drive for guide and freelancer

Guide and freelancer are two types of Jeep. Strictly speaking, the two cars are only different in appearance and interior design, while the power system and four-wheel drive structure are exactly the same.

"guide" and "free guest"

Guides and freelancers are equipped with a four-wheel drive system called "Freedom-Drive". The four-wheel drive system is simple in structure, with an open differential at the front and rear, and a common electrically controlled multi-plate structure. In extreme cases, the power distribution between the front and rear axles can be locked at 50:50. In addition, the electronic auxiliary system can help the vehicle realize the power distribution between the left and right wheels by braking.

● Guide and Freelancer Four-wheel Drive Operation Keys

For urban SUVs, such as guides and freelancers, which adopt timely four-wheel drive system, there is no need for manual operation during daily driving, and the computer will automatically distribute the front and rear wheel power according to the driving road conditions. In case of complicated road conditions, the driver can manually turn on the "LOCK" switch, and the torque of the front and rear axles will be distributed at a fixed ratio of 50:50.

● Guide and Freelancer Four-wheel Drive Test Performance

Both the Guide and the Freelancer are four-wheel drive systems based on front-wheel drive. Theoretically, the rear wheels can only get 50% of the maximum power. Therefore, facing three groups of open pulleys, the difficulty of passing forward and backward is also different. When only one front wheel touches the ground, it is easier for the vehicle to get out of trouble. When only one rear wheel touches the ground, the vehicle can also pass, but the process is not easy. Because this four-wheel drive structure determines that the power transmitted to the rear axle is only 50% at most, although the electronic auxiliary system can play the role of limiting slip between wheels, the weak power output still makes the vehicle struggle. If "4WD LOCK" is turned on manually, the system will allocate power at 50: 50 by default, and the situation will be slightly improved.

From the four-wheel drive structure and test analysis, although the guide successfully passed the four-wheel drive test, its structure determines that it is not suitable for cross-country. The main function of this four-wheel drive system is to cope with the general potholes and improve the safety of highway driving.

More exciting videos are all on the car home video platform.

More exciting videos are all on the car home video platform.

Advantages:Daily driving is easy, the computer will automatically distribute the front and rear axle power according to the road conditions, without manual control, and the fuel economy is high. At the critical moment, the driver can also manually select the front and rear axle power distribution according to 50:50 to improve the performance of four-wheel drive.

Disadvantages:The power is average, the electronic slip limit between wheels is not crisp enough, and the multi-plate clutch central differential is easy to overheat, so it is not easy to challenge three open pulley blocks.

● Introduction of free light four-wheel drive structure

As a brand-new car of the Jeep family, the positioning of Free Light is aimed at luxury brands, and Jeep insists that SUVs at this price should have strong off-road capabilities even if they focus on urban comfort. Free light is an adopted SUV, which adopts a timely four-wheel drive system called "Active Drive". This four-wheel drive system is based on ZF’s "ECOnnect" four-wheel drive system (click to view ECOnnect), which transmits power to the rear axle through PTO (front axle power take-off) and multi-disc clutch. Different from most SUVs, the free-light PTO can completely disconnect the rear axle when necessary, and there is no need to rotate at this time (the central transmission shaft of most SUVs with transverse orientation is always rotating), thus improving fuel economy. In addition, its rear axle has a multi-disc clutch structure, and the multi-disc clutch of the low-profile vehicle acts as a central differential, which can control the torque distribution of the front and rear axles.

Free light has three different four-wheel drive models, namely Active Drive I, Active Drive II and Active Drive Lock. Among them, the low-profile model adopts Active Drive I timely four-wheel drive system, which is the four-wheel drive structure mentioned in the previous paragraph. Active Drive II can distribute power among rear axle wheels, because its rear axle RDU structure adopts two sets of multi-disc clutches, that is, the left and right axle shafts have one set of multi-disc clutches, and each set of clutches is used to independently control the torque required by the wheels on that side. In addition, the Active Drive II four-wheel drive system also adds a low-speed torque amplification gear with a transmission ratio of 2.92:1. The most powerful Active Drive Lock not only has a low-torque amplification gear, but also has the locking function of the rear axle differential. The driver can manually control the left and right wheels of the rear axle to distribute the torque by 50:50 through the buttons in the car.

● Free optical four-wheel drive operating system

"High-end models have low-speed four-wheel drive function, while low-end models don’t"

In addition, like many high-end SUVs, all models of Free Light also have a road mode self-selection system called "Selec-in". In different modes, the computer will adjust the power response and power distribution to ensure that the vehicle has the best ability to get out of trouble.

● Free light four-wheel drive test performance

Like the guide, the free light adopts a four-wheel drive system based on front wheel drive, so when one front wheel has adhesion, the vehicle is easy to get out of trouble. Then, when passing through three groups of open pulleys in the opposite direction (that is, only one rear wheel has adhesion), does free light struggle to get out of trouble, just like guides and free travelers? Actually, it is not, because the free light not only has electronic limited slip between the left and right wheels, but also the rear axle can distribute the torque through the multi-plate clutch limited slip differential, thus ensuring that the power can be transmitted to the wheels with adhesion more effectively.

The free light we tested adopts Active Drive II timely four-wheel drive structure, that is, PTO has low-speed torque amplification function. However, during this test, we didn’t turn on the "4WD LOW" low-speed four-wheel drive mode. In the AUTO mode, Free Light can pass the test of three groups of open pulley blocks, and both directions are relatively easy.

More exciting videos are all on the car home video platform.

No matter from the four-wheel drive structure or the actual test results, the Active Drive timely four-wheel drive system on free light is much more powerful than that on the guide, and it can face more complicated road conditions more easily.

Advantages:Daily driving is easy, the computer will automatically distribute the power between the front and rear axle and the left and right axle shafts of the rear axle according to the road conditions, and PTO can also be automatically disconnected when necessary, thus realizing the real front-wheel drive (the central transmission shaft does not turn). The low-speed four-wheel drive and the locking function of the rear axle differential of the mid-high model further improve its four-wheel drive performance.

Disadvantages:Multi-disc clutch limited slip differential is easy to overheat protection after continuous use for many times.

● Introduction of Grand Cherokee Four-wheel Drive Structure

At present, there are two full-time four-wheel drive structures in Grand Cherokee, one is a full-time four-wheel drive system with low-speed four-wheel drive and multi-plate clutch structure; On the other hand, the limited slip differential of the rear axle is added on this basis. The former is applied to 3.0L, 3.6L and 3.0TD diesel models, while the latter is applied to 5.7L models.

At present, Grand Cherokee provides two different four-wheel drive systems, among which "Quadra-Drive II" on the 5.7L model has a set of ELSD electronic limited-slip differential on the rear axle, so the driver can lock it manually, which is theoretically better in extreme cases.

● Grand Cherokee four-wheel drive operating system

The four-wheel drive operating system on Grand Cherokee is called Selec-Terrain, which has seven driving mode options: economy, sport, auto, snow, sand, mud and rock. In addition, the Grand Cherokee is equipped with 4WD LOW low-speed four-wheel drive function. Compared with Freelight, the operating system of Grand Cherokee not only has more optional modes, but also looks more scientific and technological in its overall interface.

● Grand Cherokee Four-wheel Drive Test Performance

However, for the Grand Cherokee, the whole test process is not easy. The reason is that when passing through three open pulley blocks, the power output will be limited by default. When we tried to close the electronic stability control program, the limited slip function between the left and right wheels was completely lost. At this time, the vehicle could not get out of trouble. Therefore, in order for the four-wheel drive system to work, the electronic stability control system must be turned on by default.

Despite the full-time four-wheel drive system, most SUVs with layout are more inclined to rear-wheel drive, and the Grand Cherokee is no exception. When passing through the pulley block in the opposite direction, its two rear wheels are suspended, and only by the grip of one front wheel can the vehicle get out of trouble. At this time, if the Grand Cherokee wants to get out of trouble successfully, it can only rely on the electronic slip limit between wheels to limit the power output of one wheel, so that the other wheel can have grip. However, due to the restriction of the electronic stability system on the overall power, it is a little difficult for the Grand Cherokee to get out of trouble this time.

However, it should be declared that during the whole test, we did not turn on the 4WD LOW button. In other words, Grand Cherokee completed this test completely in AUTO mode. If the 4WD LOW low-speed four-wheel drive mode is turned on, I believe the whole process will be much easier.

More exciting videos are all on the car home video platform.

Advantages:This system is simple in structure, and the operation mode is intuitive and convenient. Drivers don’t need to remember complicated driving mode switching steps. In most cases, Quadra-Tra II four-wheel drive system can handle it by itself. If necessary, the low-speed four-wheel drive mode can be started to increase the ability to get out of trouble.
Disadvantages:The electronic stability control system has too many restrictions on power, so it is difficult for a single wheel to get enough power to get the vehicle out of trouble.

● Introduction of herdsman four-wheel drive structure

Herdsman is the most powerful off-road vehicle in Jeep family today, among which Sahara is equipped with Command-Trac part-time 4wd system, which adopts NV241 series transfer case with low gear ratio of 2.72:1, and both front and rear axles are open differential. The part-time 4wd system equipped with Rubicon is called Rock-Trac, and its low-speed gear ratio of the transfer case is 4:1, and the front and rear axles are also equipped with electrically controlled locking Tru-loc. In addition, both cars are equipped with electronic slip-limiting function between E wheels.

● Herdsman four-wheel drive operating system

Sahara and Rubicon operate the part-time 4wd system in almost the same way, and there is a transfer case lever next to the shift lever. Select the gear position of 2H on the normal paved road, and the vehicle is in the state of rear wheel drive. Select the 4H high-speed four-wheel drive gear on the wet or soft road. At this time, the torque distribution of the front and rear axles is 50:50, and the speed of the front and rear axles is the same. Therefore, it will be very difficult for vehicles to turn on the paved road when the four-wheel drive is turned on. The 4L low-speed four-wheel drive gear is used in the state where high torque traction is needed. The special gear set in the transfer case amplifies the torque and transmits it to the front and rear axles in equal proportion, while the front and rear axles still maintain the same speed.

It should be noted that when switching from 2H to 4H, the vehicle speed should be lower than 88km/h.. If you switch to 4L, the speed needs to be lower than 5km/h, and it is better to stop and then put into 4L gear. In addition, the 4L state can only be used in the face of extremely challenging road conditions, when the speed cannot exceed 40 km/h..

Compared with Sahara, Rubicon’s strength lies in the addition of a mechanical differential lock on the front and rear axles. In the face of very harsh environment, it can also ensure that all four tires can get sufficient power.

● Herdsman four-wheel drive test performance

Both Sahara and Rubicon are equipped with electronic slip-limiting function between wheels. Theoretically, as long as the transfer case is selected in the 4H gear, its front and rear axles can get 50% power respectively, and different power outputs of the left and right wheels can be achieved through electronic slip-limiting function between wheels.

In this test, we found two herdsman, one of which is a 3.6L Longteng collector’s edition, which is a five-door model with the same four-wheel drive structure as Sahara. The other one is a 3.6L two-door version of Rubicon, which has two differential locks at the front and rear, and its off-road performance is more powerful.

In the face of three groups of open pulley blocks, we only chose the 4H mode, and the front and rear differential locks of Rubicon were not activated. The vehicle can successfully get out of trouble only by relying on the electronic slip-limiting function between EDS wheels. The 3.6L engine can provide excellent power output, and the electronic system is involved in the whole process in time. Only after a few brief slips of the suspended wheel, the other wheel can get sufficient grip, thus helping the vehicle to get out of trouble.

After selecting the 4H mode, the torque of the front and rear axles is completely distributed according to the ratio of 50:50, so when passing through the pulley block in both directions, the performance of the vehicle is basically the same, and there is no bias towards the front drive or the rear drive. Of course, in the conventional 2H mode, herdsman is a rear-wheel drive SUV.

More exciting videos are all on the car home video platform.

More exciting videos are all on the car home video platform.

Advantages:Part-time 4wd system can ensure strong off-road capability, which is the most reliable four-wheel drive structure at present.
Disadvantages:Operation and driving are more complicated than timely four-wheel drive.

Full text summary:

Generally speaking, various four-wheel drive structures under the Jeep brand should be regarded as having their own characteristics. In terms of off-road performance alone, herdsman Rubicon’s four-wheel drive system is undoubtedly the most powerful Jeep car. This pure hard-core off-road vehicle can be easily conquered in the face of many off-road projects and difficult road conditions, but there is no absolute perfection in the world. No matter Rubicon or Sahara, their driving experience on the road is not excellent, but this will not affect the love of those who pursue pure off-road at all.

In terms of comprehensive performance, Grand Cherokee and Freelight are both good, and although they are slightly inferior to herdsman in off-road performance, there is no problem in coping with common off-road conditions. More importantly, they have a good performance in road driving comfort, which is very suitable for friends who like off-road style and want to meet the daily road driving comfort.

Compared with the same SUV, the guides and freelancers are also excellent in off-road performance. However, after all, these two cars are SUVs oriented to ordinary consumers and located in cities. Road driving comfort and cost performance are the most important. (Text/Figure car home Zhang Ziyi)

[Introduction]

Suffering from chronic diseases has become a daily routine in Chinese. According to the latest report of the World Health Organization, Chinese has17％Will die prematurely because of chronic illness, specifically, on average every10 secondsOne person suffers from cancer; Average per10 secondsOne person suffers from diabetes; Average per30 secondsAt least one person died of cardiovascular and cerebrovascular diseases. Despite the continuous progress of medical technology, the situation of major chronic diseases is still not optimistic: the incidence of cancer ranks first in the world; The incidence of cardiovascular diseases continues to rise: the mortality rate of chronic obstructive pulmonary disease far exceeds the world level and the number of patients is close.100 million: the diabetic population has exceeded100 millionAnd keep growing.

Chronic diseases are the silent killers lurking around us.

Overdrawn life-the status quo of chronic diseases

Chronic disease, full name of chronic non-communicable disease.

Chronic diseases pose a serious threat to Chinese’s health. According to the World Health Organization’s 2020 global survey report on chronic diseases, the proportion of deaths due to chronic diseases in China has reached.89％The total death population is close to93 millionThe proportion of premature death due to chronic diseases has reached an alarming rate.17％. This means that about one in five people will end their original life course early because of chronic diseases.

Figure 1 Current situation of chronic diseases in China

　"Long course of disease and usually slow progress" is a major feature of chronic diseases. The World Health Organization defines chronic diseases as "health problems that need to be managed continuously for several years or decades". In 2020, the average life expectancy in China is 77.8 years, but the average life expectancy in health is about 69.2 years. In other words, residents have roughly8.6 yearsThe time to live with illness.

Hypertension and diabetes, which we are familiar with every day, are all covered by chronic diseases. Among all chronic diseases, cardiovascular diseases cause the largest number of deaths from non-communicable diseases, resulting in17.9 millionPeople died, followed by cancer (9 million), respiratory diseases (3.9 million) and diabetes (1.6 million). These four types of diseases account for all deaths from non-communicable diseases.80％.

Major chronic diseases

Cancer, cardiovascular and cerebrovascular diseases, respiratory diseases, diabetes

In the summer of 2021, Zhou Ming, an employee of a big factory in a first-tier city and born in the 1980s, found himself suffering from liver cancer in his physical examination. After nearly a quarter of his liver was cut off by surgery, he chose to take only a few days off, dragging the unhealed incision and continuing to work without telling anyone in the company.

According to the latest statistics of the World Health Organization, there were 19.29 million new cancers in the world in 2020, including 4.57 million new cancers in China, accounting for 23.7% of the world, and the number of cancer deaths in China exceeded 3 million in 2020, all of which ranked first in the world.

Fig. 2 The prevalence rate increased in China from 1998 to 2007.

Middle-aged people like Zhou Ming are not alone. In the era of fast pace and high competition, high pressure and frequent staying up late seem to have become a tacit lifestyle popular among workers in the workplace and even academic dogs in colleges and universities.

In addition to the rising cancer incidence rate due to the aging society, the changes in living environment and lifestyle have also led to the signs of a younger cancer incidence rate in China, and the number of cancer patients aged 20-39 has increased significantly.Cancer is becoming a normal state of human life in the form of chronic diseases, but we don’t know how to deal with it.[3]

Cardiovascular and cerebrovascular diseases

　According to the data of National Cardiovascular Center, the prevalence of cardiovascular diseases in China is on the rise.

Calculate the number of patients with cardiovascular disease290 millionAmong them, there are 13 million stroke, 11 million coronary heart disease, 5 million pulmonary heart disease, 4.5 million heart failure, 2.5 million rheumatic heart disease, 2 million congenital heart disease and 270 million hypertension.

Since 2009, the mortality rate of cardiovascular diseases in rural areas has exceeded and continuously exceeded the urban level. In 2015, the mortality rate of cardiovascular diseases among rural residents was298.42/100,000Among them, the death rate of heart disease is 1.4479/100,000, the death rate of cerebrovascular disease is 1.5363/100,000; the death rate of cardiovascular disease of urban residents is 2.6484/100,000, of which the death rate of heart disease is 1.3661/100,000, and the death rate of cerebrovascular disease is 1.2823/100,000.

Figure 3 Estimated number of hypertensive adults in China

Figure 4 Crude death rate of heart disease in cities

Respiratory diseases

　COPD generally refers to chronic obstructive diseases. Although this term is unfamiliar to the public, COPD is the third leading cause of death in the world. In 2013, the number of deaths due to chronic obstructive pulmonary disease in China was much higher than that due to lung cancer in China.

According to the survey data of China Adult Lung Health Research (CPHS) in 2018, the prevalence rate of COPD in adults aged 20 and over is 8.6%, and it is as high as 13.7% in adults aged 40 and over.For the first time, it is clear that the number of patients with COPD in China is nearly 100 million. COPD has become a chronic disease with hypertension and diabetes, which constitutes a major disease burden. The mortality rate of COPD in China is much higher than the world average.

In our country, every2.5 minutesOne person died of COPD, which has the characteristics of high prevalence rate, high incidence rate, high disability rate, high mortality rate, high economic burden rate and low awareness rate.

Fig. 5 Comparison of prevalence of COPD between urban and rural areas in China

Chronic obstructive pulmonary disease (COPD) is called chronic obstructive pulmonary disease (COPD). In recent years, the prevalence rate has increased, and the death toll has exceeded that of lung cancer.

According to the statistics of the top ten major causes of death in some cities and rural areas in China, respiratory diseases (including lung cancer) account for the fourth cause of death in cities and the third in rural areas. Due to air pollution, smoking, physical and chemical factors caused by industrial economic development, biological factors inhalation and population aging, the incidence of respiratory diseases such as lung cancer and bronchial asthma has increased significantly in recent years, and chronic obstructive pulmonary disease remains high.

Diabetes

Back in 1980s, the national epidemiological survey showed that the prevalence rate of diabetes in China was only 0.67%. According to the regional data of national disease surveillance in 2010, the prevalence rate of diabetes among residents over 18 years old in China is 9.7%. By 2013, when China scholars and the Journal of the American Medical Association published their research, the number of diabetic patients in China had jumped from about 92.5 million in 2007 to.100 millionThe prevalence of diabetes is approaching.12％.

From 2000 to 2016, the number of diabetic patients in China increased from 55,167,473 to 89,783,100, with a growth rate of 62.7%. By 2016, nearly 90 million people in Chinese had diabetes. In 2016, 140,000 people died of diabetes, of which 51% were men.The average annual increase is 2.16 million cases, with an increase of 6,000 cases per day, an increase of 247 cases per hour and an increase of 4 cases per minute.

Figure 6 Top Ten Countries in the Number of Diabetes Patients Aged 20 -79

Fig. 7 Changes of incidence of diabetes in China.

Urban-rural comparison

Focusing on the comparison between urban and rural areas, the prevalence of chronic diseases shows a trend related to the degree of urbanization.

According to the vertical comparison of urban scale, from four types of rural areas to big cities, the prevalence of chronic diseases is on the rise with the improvement of urban development. This means that,It is precisely where the economy is more developed and medical resources are more concentrated that people are more likely to suffer from chronic diseases.

Fig. 8 Comparative map of chronic diseases prevalence between urban and rural areas in China.

Figure 9 Changes of Chronic Disease Mortality in Urban and Rural Areas

Behind the wealth-the cause of chronic diseases

With the economic prosperity of China, millions of Chinese have successfully "lifted out of poverty", but it is accompanied by a "rapid change" in epidemiology.

The Lancet, the world’s top medical journal, systematically analyzed the disease burden of China in the past 30 years in a paper. The paper shows that the burden of diseases in China is changing, especially infectious diseases, and the maternal and child mortality rates have dropped significantly. However, the chronic diseases, mainly cardiovascular and cerebrovascular diseases and cancer, have increased significantly, which has become the main cause of premature death in China.

There are also health risk factors that change with it. Hypertension, smoking, high-salt diet and outdoor air pollution are also the chief culprits of cardiovascular and cerebrovascular diseases and cancer. These bad habits are common and insignificant in life, but they unconsciously become a gray area, which spans the development process from "health" to "chronic disease".

:: dietary imbalance

Unreasonable dietary structure is an important factor to induce chronic diseases. According to the report of the World Health Organization, 4.1 million deaths can be attributed to excessive intake of salt/sodium every year, and 4.1 million lives are lost, which is equivalent to one fifth of the population of Beijing.

In the past 30 years, China has experienced a transition from the traditional dietary pattern to the western dietary pattern, with the consumption of grains and vegetables decreasing and the consumption of meat and packaged food increasing. With the continuous development and progress of the national economy, the sources of nutrients obtained by Chinese residents are more abundant, and the dietary quality has not been improved, but there is still a big gap between the overall dietary quality and the ideal dietary quality. This gap also leads to the huge challenge that people are still facing the rapid growth of chronic diseases such as obesity and hypertension while improving their living standards.

Zhang Bing, deputy director of the Institute of Nutrition and Health of China Center for Disease Control and Prevention, pointed out that a reasonable diet is an effective means to prevent chronic diseases and promote health. Although in recent years, the state and relevant organizations have been vigorously promoting the implementation of the three reduction policies (reducing oil, salt and fat). However, in the latest "Report on Nutrition and Chronic Diseases of China Residents (2020)" press conference, Li Bin, deputy director of the National Health and Wellness Commission, emphasized that the unhealthy lifestyle of residents is still widespread-the dietary fat energy supply ratio continues to rise, and rural areas have exceeded the recommended upper limit of 30% for the first time. The daily cooking salt and oil consumption per family is still much higher than the recommended value. Chinese’s various dietary indicators still inevitably exceed the standard.

Fig. 10 Chart of Dietary Structure Series

Irregular work and rest

Sleeping late, staying up late, insomnia … Bad work and rest habits have also spread to counties and cities with the continuous advancement of urbanization. The average sleep time in Chinese has also shrunk from 8 hours a hundred years ago to today’s.6.8 hours. For every modern person, a healthy and adequate sleep time is increasingly becoming a luxury.

According to the data of China Sleep Research Association, bad work and rest habits will lead to an increase in the risk of some serious chronic diseases, such as cancer, diabetes and heart disease.

Fig. 11 Regional Distribution of Late Sleeping Party in China in 2018

Figure 12 Staying up late in different cities of China in 2021.

It can be found that the causes of staying up late in first-tier cities focus on work and refreshing; Second-tier cities have a strong tendency to work and rest irregularly, and the cause may be due to the complicated behavior, which is not specifically pointed out; The causes of the population’s late sleep in third-tier cities may point more to the urban sleeping environment. In the horizontal comparison of young people staying up late between cities, the rate of young people staying up late in new first-tier cities and first-tier cities is over 70%, while the data in second-tier cities, third-tier cities and below are lower than the first two, but the rate of young people staying up late here is also over 60%.

When irregular work and rest becomes a tendency of a group, it is hard for us not to think about whether this is the detailed embodiment of the negative impact of urbanization and globalization in the fast-paced era, and how we can resist the spread of bad sleep environment from the perspective of individuals, groups and even society, so that the whole of China can sleep peacefully at night.

Lack of exercise

　The World Health Organization points out that every year there are1.6 million casesDeath can be attributed to lack of exercise,

For Chinese, people are becoming more and more accustomed to sitting, instead of stretching their legs and moving around. With the advancement of urbanization, the degree of professional labor of people of all ages is generally reduced, and it is more and more convenient to travel. The popularity of electronic products has led to a general increase in residents’ static life time, a decrease in energy consumption, and an imbalance between energy intake and energy expenditure, which directly leads to individual obesity and increases the risk of chronic diseases.

Figure 12 Leisure exercise of China residents.

Timely intervention-before suffering from chronic diseases

In fact,There is a "transition period" from a healthy state to a chronic disease.. It is also the state in this transitional period that determines whether an individual’s physical state returns to health or falls into the abyss of chronic diseases.

Taking the intervention of diabetes as an example, the pre-diabetic population is in a "transition period" from high-risk groups to diabetes. Pre-diabetes refers to people with impaired fasting blood glucose or abnormal glucose tolerance, but they do not meet the diagnostic criteria of diabetes. They have a high risk of illness, accounting for more than one-third of adults in China. If they are intervened through an appropriate lifestyle, they can be transferred to the normal glucose metabolism population; But if left unchecked, it will be followed by lifelong disease development.

Therefore, it is not only important but also necessary to intervene in time for people in transition. Grasping the transition period is to grasp the floodgate of the spread of chronic diseases.

Social forces-environmental improvement

　The control of diseases is not only the self-restraint of a certain group of people, but also the collective restraint of the whole society.

The World Health Organization has clearly pointed out that tobacco causes more than 7.2 million deaths every year (including deaths caused by exposure to second-hand smoke), and it is expected to increase significantly in the next few years. The personal behavior of tobacco use has also become an important issue in the field of public health because of its diffusion. With the arrival of Healthy 2030, the China Center for Disease Control and Prevention and the Tobacco Control Office jointly put forward the slogan "Healthy China must be a smoke-free China".

Thanks to the efforts of all parties in the tobacco control campaign, the adult smoking rate in China has also shown a good trend year by year.

Figure 13 National Adult Smoking Rate

Give priority to prevention and proceed from prevention.

The power of society is not only focused on tobacco control, but also committed to creating an all-round supporting environment. The National Health and Wellness Commission and relevant departments continue to take joint actions and promote in environmental governance, tobacco control, nutrition improvement, health education, physical fitness, medical care, etc., to build an all-round supporting environment and form a joint force for prevention and control.

Government power-macro planning

　We need to pay attention to the progress of chronic disease control and face up to the grim situation of chronic disease prevention and control. Fat group, second-hand smoke and unbalanced diet caused by less exercise … These seemingly very personal living habits have become a systematic project that needs public attention and government supervision when they are related to the health status of a huge population.

China Health Development Report 2030 attempts to outline a healthier and more comfortable blueprint for our future with indicators and plans covering from top to bottom. Now, with only nine years left before the goal, the development situation of chronic diseases is not optimistic-can we achieve this goal?

Figure 14

Whether it is social forces or government planning, the final specific behavior still has to be implemented by individuals.

In the Outline of Healthy China 2030 Plan, all indicators are also divided into advocacy indicators, anticipation indicators and binding indicators. Among them, only binding indicators are mandatory by the government. The big goals in the field of health are all non-binding indicators.

This means that everyone must take action on the way to Health 2030.

Authors: Li Xiaoxiao, Quan Yi, Ding Ruifan,

Instructor: Wu Xiaokun

School: South China University of Technology

Editor: Wang Jing

Data source:

[1] Li Chengfu; Liu Hongyan; Liang Ying; Henry Hui Wang; Li Qianhui, Study on International Comparison of Healthy Life Expectancy and Prediction of Healthy Life Expectancy in China [J], Journal of Demography, 2018,40(01)

[2] the harm of lack of sleep. China Sleep Research Association

http://www.zgsmyjh.org/ndjsp? id=156＃_np=107_1187

[3] National Cancer Center: The latest cancer report of China in 2019.

http://www.360doc.com/content/19/0130/00/52645714_812065860.shtml

[4] The Lancet, Mortality, Incidence and Risk Factors in China and Its Provinces from 1990 to 2017: Systematic Analysis of Global Disease Burden in 2017.

https://new.qq.com/cmn/20210106/20210106A0BJSW00.html

[5] Information of the annual meeting of chronic diseases in China.

[6] China Center for Disease Control and Prevention Nutrition Statistics Yearbook, National Death Monitoring System.

Recently, Deep Blue Automobile announced the end point delivery data in January 2023. The delivery volume of its first car SL03 reached 6,137 units, ranking No. 2 in the total delivery list of new car-making forces, and lagging behind the first NIO with only 179 units. This is the status of Deep Blue industry once again after becoming the fastest new energy brand in China to achieve delivery exceeding 10,000 units in December last year. This will undoubtedly break the existing pattern of new car-making forces and further consolidate the industry status of Deep Blue as a "top player".

Let young people play "High" and promote the continued popularity of SL03

Deep Blue is a generation Z crowd, as its first strategic model, SL03 uses the market’s scarce pure electric + rear-drive structure combination, which allows the lower limit of driving pleasure to be above the upper limit of the same class of cars.

At the same time, the SL03 is also equipped with a new energy and electrification solution "The Force Electric". "The Force Electric" includes the Force Supercentralized Electric Drive and the Force Intelligent Range Extension, with over 181 patented technologies, 95% of the industry’s highest efficiency electric drive assembly, 1200km long battery life, and the industry’s first low-temperature pulse heating technology. The blessing of a series of leading technologies not only brings surging performance and full driving fun, but also brings low energy consumption, allowing young people to use less electricity, run faster, drive better, and play higher.

"Play" with young people and open up the dark blue imagination space

Deep Blue’s "user-centricity" is not only reflected in product and technology research and development, but all its marketing activities and channel construction are also centered around young people. The goal is to "play" with them and subtly convey the advantages of products and brands, thereby opening up their imagination of Deep Blue.

Last year, Deep Blue teamed up with countless sci-fi masterpieces "The Three-Body Problem" to provide young people with exciting stories. At the same time, it also launched videos such as "Luo Ji Reports the Crime, the Police are Hard to Breach" and "Congratulations to Mr. Luo Ji, the Wall Facer, for his new car!" These videos not only bring joy to young people, but also imprint the performance characteristics of SL03 into their hearts.

Before and after the Spring Festival, Deep Blue also held activities such as "Extreme -30 ° Uninterrupted Power Scene Experience", "Uninterrupted Power Hot Pot Night" and New Year’s Party. At the same time, it also joined hands with "Fashion Elf" Prince Ziwen and "All-round Youth" Liu Wei to open the central axis of the capital to find the New Year’s flavor. These activities attracted a large number of young people to participate, so that Deep Blue not only showed the infinite possibilities brought by "Force Electric" technology to life, but also listened to the truest "voice" of young people.

"Direct connection" with young people to help "Deep Blue Speed"

Activities that let young people play with high-end products and touch the "hearts" of young people… These achievements are also due to the new model of "direct connection" with users. Unlike traditional car brands, Deep Blue has abandoned the traditional marketing model of dealers as a bridge since its establishment, and instead switched to a new system of "online and offline integration, direct connection, direct collection of car models, and consistent prices" to directly contact users, communicate with users, and serve users. Listen to the truest demands of young people in "direct connection".

Moreover, unlike other new car-making forces that "start from scratch", Deep Blue relies on Changan’s strong dealer system. While building its own direct sales channels, it absorbs investors who agree with Deep Blue’s culture and philosophy in Changan Automobile System to jointly build end users touchpoints and better "direct connection" with young people. Under this model, SL03 has been listed for only one month, and 450 order centers have been built. By the end of last year, the number of order centers has increased to 570, covering 218 cities across the country. Such channel expansion speed is also an important guarantee for "Deep Blue Speed". Moreover, in January, Deep Blue also launched the Spring Festival non-closing event.

Car review

The beautiful conclusion in December last year and the successful start of January this year show that Deep Blue has been galloping on the right path. In 2023, Deep Blue’s second strategic model and first SUV product S7 will be officially launched, and the channel construction will be further accelerated, which will bring a more perfect travel experience to young consumers. On this basis, it is believed that the "Deep Blue Speed" will continue in the future, and its status as a "leading player" will continue to be consolidated.