Where did you get this information about "Jan 31 to get their money out?" I live in China, and trade bitcoin in btcchina (and OTC). I have not seen this information, and I read Chinese. I think this is FUD.
Regardless, the big players in China will use local and OTC transactions anyway... better to be anonymous when you are stashing your "hong bao" (red envelopes, aka "bribes") and evading capital controls
Governments and banksters can and will fight bitcoin ... they may slow down the adoption curve by making it inconvenient for casual users, but they cannot stop bitcoin !
Here is the official statement (nd translation) on btcchina website:
---
Dear bitcoin China (BTC China) users: due to well-known reasons, bitcoin China (BTC China) had to temporarily freeze the recharging function, bitcoin charging, coins and currency are not affected, bitcoin China (BTC China) will continue to operate. Please continue to focus on our home page, we will provide other means of recharging. To bring you any inconvenience, we express profound apology. Bitcoin China (BTC China) 2013.12.18
---
亲爱的各位比特币中国(BTC China)用户:由于众所周知的原因,比特币中国(BTC China)不得不暂时停止人民币充值功能,比特币充值、比特币提现和人民币提现不受影响,比特币中国(BTC China)会继续运营。请大家继续关注我们的主页,我们会尽快提供其他的充值途径。给您带来的不便,我们在此表达深深的歉意。比特币中国(BTC China)2013.12.18
Another chinese sell off anticipated tmrw I guess. Unless everyone exited in the past 3 days
They have till jan 31 to get their money out, so the exit of capital will happen gradually between now and then.