I assume you have never heard about urbanization? The difference is China started this way later than western powers.
Farewell to Peasant China: Rural Urbanization and Social Change in the Late twentieth centry edited by Gregory Eliyu Guldin.
Not that you ever gonna pick up that book cause like rest of your countrymen, you are only here to score some cheap shoots.
Now don't get sore about questions. The tone of your reply sounds like you are irritated with the question - especially where you ask whether I have heard about urbanization. That is not an intelligent answer - and I don't mind if you don't have an answer - but a non answer that sounds like a cop out made by an ignorant person is useless. No need to get angry. If you don't know just say so. It is not shameful to not know everything on earth.
Yes I have heard of urbanization.
Let me state my question more clearly.
Urbanization in the USA did not occur due to government forced/sponsored migration of people to urban areas. Cities had industries and jobs and the migration was economic in the sense that people went for the jobs and living until the US achieved about 80:20 Urban:Rural ratio
Urbanization is an unavoidable phenomenon, but it is not forced by governments. It is "people led". In India rural people migrate to the cities for economic reasons - and end up living in slums and temporary shacks. The government is not forcing them to come, but the government is not stopping them either. India has changed from 20:60 Urban-Rural ratio in the 1960s to about 35:65 now. I am not sure that the USA's 80:20 ratio is good for India
Urbanization brings with it some social issues including shortage of clean water supply, garbage disposal, sewage treatment and disposal, pubic transport overcrowding, loss of green cover, loss of natural water bodies, ground water level reduction and groundwater pollution and air pollution.
What are Chinese authorities doing to cope with these issues? Why is there forced urbanization despite the fact that urbanization and the creation concrete megacities per se is not a proven or great solution for increasing environmental, water and energy issues?