even as a Chinese
your problem is hard to answer, i think its pretty hard for you to sell second hand cars in China, especially when your cars on board
ummm good luck with you
Edit:
And personally i dont think this is a good idea, i cant argue 2nd hand cars in our country is a good business, but just for local dealers, its a bit satuated, for example, you live in Beijing and you will just buy a 2nd hand car in Beijing, and when you move your ass to local company, a lot of cars you can choose, too competitive, i dont think you have chance to beat them.