People often point to the "ghost cities" like Ordos when declaring China to be in a massively overbuilt real estate bubble. Yet studies such as those done by Mckinsey below predict 350M more people moving to cities by 2030 [1]. Given NYC has a population of about 8M, it appears China actually needs to build an additional 44 NYC sized cities (or expand existing ones) by 2030.

Makes you question weather they really in a bubble? It appears they could fill Ordos and 43 other new cities in the next 15 yrs! Perhaps they need to be putting these cities up even more rapidly.

[1]http://www.mckinsey.com/insights/urbanization/preparing_for_...