This is the wrong policy for China regarding cryptocurrencies, they should stop.
What can you do to stop them? Go and tell them to stop this because this is not the right way?
China has the right to do it because they know the risk of having a cryptocurrency for trading. They are now focusing on making their own centralised cryptocurrency that only the government can handle. I don't know what would be the result of that but chinese people would eventually support that.
telling them to stop isnt really consider as a wrong way but as long as you have a valid reason to support your advocacy of stopping them who knows they might change thier mind and realize thier mistakes but i also think that they are doin this for a reason and one of those reason i think is because they are now creating thier own centralized crypto but i also dont think that all chinese citizens will embrace it because i think that being too centralized isnt good anymore