Tianjin is the largest coastal city in northern China. In terms of urban population, Tianjin is the fourth largest in China, after Shanghai, Beijing, and Guangzhou. In terms of administrative area population, Tianjin ranks fifth in Mainland China. The walled city of Tianjin was built in 1404. As a treaty port since 1860, Tianjin has been a major seaport and gateway to Beijing. During the Boxer Rebellion the city was the seat of the Tianjin Provisional Government. Under the Qing dynasty and the Republic of China, Tianjin became one of the largest cities in the region. At that time, numerous European-style
Migration in China government to control the flow of internal migration in China. However, the flow of migration is large and widespread enough to be difficult for the government to manage. "Despite the Chinese government's policy of encouraging the development of western regions of the country, China's coastal regions, and especially the province of Guangdong, experienced the largest increase in the size of the floating population. With less than 7 percent of China's population, Guangdong has 27 percent of China's floating population. The size of the floating population in Guangdong nearly tripled between the 1990 and the 2000 censuses." Such uneven migration can