While there were reports earlier in the year that Chinese authorities were putting in place measures aimed at severely curtailing the mining of cryptocurrencies this has not materialized. According to Nikkei Asian Review, one of the reasons why a complete obliteration of the sector has not happened is because China is keen on influencing the international flow of money. The United States already enjoys this power through the U.S. dollar and cryptocurrencies could do the same for China.
That does make a lot of sense, though I still wouldn't compare the USD and crypto in this context. If this is true, China is better off allowing exchanges and regulating them tightly to minimize capital flight, which was apparently their problem in the first place. Who knows though, they may be in the process of doing just that.
But yeah, Bitcoin does bring money in, so I'd be quite surprised if they killed it off. I personally would prefer it if mining were more distributed across the world though. Having 70% of the hashpower behind the Great Firewall gives the Chinese government more influence than it should have.