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,
Health in China because of the policy and its elderly population (65+) will outgrow the working aged people. The elderly population in China is highly reliant on the working aged people for support and the number of dependents (children 0-14, adults 65+) are increasing compared to the number of working aged people. China's population is aging and the number of children born is less than the replacement rate. Smoking related illnesses killed 1.2 million in the People's Republic of China; however, the state tobacco monopoly, the China National Tobacco Corporation, supplies 7 to 10% of government revenues, as of 2011, 600 billion yuan,