If you see this website
http://btckan.com/price

Already okcoin and btcchina has reduced x 10 their volume because deposit banning.
Otherwise the other big chinese exchanges like huobi,  fxbtc, chbtc.com have similar volume that beginnings of december. Perhaps today less because the weekend.

Yet Huobi, is the first of the world by volume since thursday.

They haven't similar btcchina problems?