China banning bitcoin is not important and I dare say nobody cares about what another country where they don't live in does to bitcoin or anything else. The FUD of China banning bitcoin is the problem and it will never go away even if not a single person in China used bitcoin! So in theory China can "ban bitcoin" every month as long as people are naive enough to believe the FUD.
china wants their FUD to be able to successfully trick and make all investors panic, and their strategy works 100%, so actually from the start if we don't respond too much and don't think it's something that causes panic then I think china could just cancel their policy because they didn't respond in the media and investors. that way China is no longer considered a country that is important for the growth of Bitcoin.
However, it is too late that we have all fallen into the abyss of the trap that China has made.