While there is lots of speculation, TechCrunch has confirmed with two sources with knowledge of developments that government officials have visited a number of top exchanges to instruct that they cease trading services on Chinese soil soon. At this point we understand that the government hasn’t given a hard deadline for when that should be, nor has it indicated whether it will allow services to resume in the future.

https://techcrunch.com/2017/09/14/china-bitcoin-exchange-suspended-bttc-china/