Not an expert, but I've heard a lot of property purchases are a way for rich people in China to evade capital controls.
http://theprovince.com/business/real-estate/mysterious-wheel...
http://www.greaterfool.ca/2017/03/04/its-official-its-a-bubb...
Normally there would be an epic crash in the near future, but I have come to the conclusion that this time really is different, and I'm not joking.
http://m.nzherald.co.nz/business/news/article.cfm?c_id=3&obj...
These are mostly empty apart from a couple of months when the princes of the middle east come to escape the heat. I find it very sad to see things of such beauty being occupied by people who have stolen a countries wealth away from their poorest.