why do you expect that? you're talking about tens of thousands of individuals and companies, all themselves invested in bitcoin, being
asked (through no existing command or enforcement mechanism) to essentially destroy their own personal wealth. even assuming the chinese state could achieve compliance from 77% of the existing hardware, it would optimistically take several days. the only way around that stumbling block would be to mandate centralized control of the miners, which would be impossible to keep secret and would also inspire some sort of reaction.
the idea that every miner in china will jump when xi says is pure fantasy.