Urbanization in China some cases to an ethnic stratification of labor and greater potential for ethnic conflict. In 2005, China had 286 cities. Most of China's cities have a population of one million and below. Shanghai is the largest city in China, with a population of 19 million, followed by Beijing with a population of 17.4 million. These are the two mega-cities in China. From 2010 to 2025, it is estimated by the Ministry of Housing and Urban-Rural Development that 300 million Chinese now living in rural areas will move into cities. The fast pace of urbanization will create at least one trillion
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,