nternal migration in the People's Republic of China is one of the most extensive in the world according to the International Labour Organization. In fact, research done by Kam Wing Chan of the University of Washington suggests that “In the 30 years since 1979, China’s urban population has grown by about 440 million to 622 million in 2009. Of the 440 million increase, about 340 million was attributable to net migration and urban reclassification. Even if only half of that increase was migration, the volume of rural-urban migration in such a short period is likely the largest in human history.” Migrants in China are commonly members of a floating population, which refers primarily to migrants in China without local household registration status through the Chinese Hukou system.[
The answer to population growth in cities is not a ban on migration, but a freedom of the people in the cities to build and grow, and take advantage of migration. There is no reason to ban people from migrating to overcrowded cities, but if anything, they should be stimulating growth with stimulus. The governments of overcrowded Chinese cities should not ban migration.