I was befuddled by what's been going on there. So earlier today I watched this [0], it explains clearly (for a complex situation) what's been going on in China's real estate, the 'ghost cities' and the demolitions. Below that,[1] a recent look at a 'ghost city' by two western bikers.
[0]https://www.youtube.com/watch?v=f5SE47Xjx2Q
[1]https://www.youtube.com/watch?v=UPwtUTrwKRI