Check out Shanghai or Beijing sometime. Or just google downtown of anyone of these two, and repeat that again. And note that while they are two cities, there's tens of millions of people in each. Not to mention Hong Kong, Shen Zhen, and other big tier two cities.
Trust me, while the majority might be working for pennies on the dollar (in tier three cities mind you), there is absolutely no shortages of rich people in China.
no no!! China is all rice swamps and smog...
http://www.forbes.com/sites/kenrapoza/2013/08/01/macau-is-vegas-on-steroids/don't say anything otherwise to those Westerners!!!