Knowing China it will be likely to be done by them. Theyre trying to control bitcoin in many ways directly or indirectly. Theyve done it by banning exchanges before as a result a 2800$ dip last September but failed. And now if they will make this, it will only target theyre citizens and outside of its country will not be affected. So whatever China does let them be for the reason most us dont bother to care about them.