you had to do one search to find most of what you've said is false

Underoccupied developments in China are mostly unoccupied newly built property developments in China, and frequently referred to as "ghost cities" or ghost towns. The phenomenon was claimed and recorded as early as 2009 by Al Jazeera's Melissa Chan and subsequently reported by news media over the decades.[1][2][3][4] Although a feature of discourse on the Chinese economy and urbanization in China in the 2010s, many developments that were initially criticized as "ghost cities" in China have since become occupied and are now functioning cities.[5][6][7][8]

China's government has set a goal to raise the nation's urbanization rate to around 75% by 2035, which may require the construction of an estimated 40 to 50 million new housing units to accommodate this shift.[9] Some observers argue that China's so-called "ghost cities" are better understood as ambitious urbanization projects built ahead of demand.

https://en.wikipedia.org/wiki/Underoccupied_developments_in_China

they don't have "ghost cities" they have something called planned economy. in a planned economy the state plans to improve the lives of the proletariat. so essentially they are creating house for people to live instead of them being used for upping some numbers on a spreadsheet.