As far as I know, the ban on mining and circulation of cryptocurrency in China occurred at the level of the People's Bank of China, which is the central bank of this country. That is, there are no separate laws regarding such a prohibition. In any case, I have not heard about it yet. If there are no special laws, then there are no sanctions for violating this prohibition. That is, for the time being, this is, one might say, a soft prohibition, and no one will strictly control it. Let's see how events will happen next.