Administrative divisions of China By its political level, when a "city" is referred to, it can be a: By its actual area and population, it can be: When used in the statistical data, the word "city" may have three different meanings: It is important to specify the definition of "city" when referring to statistical data of Chinese cities, otherwise, confusion may arise. For example, Shanghai is the largest city in China by population in the urban area but is smaller than Chongqing by the population within the administration area. Before the establishment of the Qin Dynasty, China was ruled by a network of kings,
Obesity in China indicates that in 2015, China had the highest numbers of obese children (15.3 million), and the second highest (behind only the United States) number of obese adults (57.3 million) in the world. These high numbers are largely attributable to China’s massive population. According to Wang Longde, Chinese Vice Minister of Health, the problem is that the population does not have enough awareness and lacks knowledge of nutrition and what constitutes a reasonable diet. The government is attempting to reduce the problem with building more playgrounds and passing a law which requires students to exercise or play sports for an hour