Their are 7 exchanges that more than 2000 BTC volumn per day in China.

the volums of these 7 exchanges in the past 24 hours:
btcchina.com 2925 BTC
btctrade.com 8988 BTC
chbtc.com    17510 BTC
fxbtc.com  22336 BTC
huobi.com  64078 BTC
okcoin.com 5441 BTC
btc100.org 3110 BTC

btcchina.com is the largest one in the past, but not now.

And Btcchina is the worst exchange i have ever used, they don't reply your emails, nobody pickup the phone calls, and you have to wait at least two days to withdraw your CNY ; but with other exchanges , you can usually get your money within one day even within a few minutes.

The truth is the OP is full of bullshit , i feel ashamed that you said you are Chinese and you are telling the truth in the subject.