Some figures for you all... these are not official statistics but what I learn from my own first-hand experience.
These are the figures for cities like Shanghai, Beijing and Shenzhen.
i) a fresh university graduate makes ~USD400 a month
ii) average housing price is around USD3000-4000 per square meter
iii) a factory line worker makes USD150-250 a month. Free dorm and meal are normally provided.
iv) a taxi driver makes USD400-500 a month. They used to be able to pocket over USD1,000 a month 10 years ago as cars are now popular
One thing very important to bear in mind, each Chinese has his own "census register" (戶籍

. So if he is born in the countryside, he will lose all entitlement to government sponsorship of education, housing, pension, medicine, etc when he moves into a city. China government is considering to change but this policy has the impact that it creates 2 classes in China: those in big cities and those in the countryside.
Another thing to bear in mind is that normal Chinese are in no way rich, even for those so-called middle class. Most of them are not in debt but they don't really have a lot money. China savings rate is high because the corporations make huge profits and save it. The banks are highly inefficient but they are perfect investment as the lend/borrow rate difference is huge.
So while China economy is growing rapidly, many locals don't feel the benefits.