Earlier quoted context omitted.
No, China is not a person with a single will. The assumption/assertion that the mining equipment may as well all be sitting under MSS guard in Beijing is horsecrap.
For small scale miners in China it might be a different story. However, if Xi Jinping decided to crush Bitcoin for whatever reason large scale mining in China, which is well past 50%, would quickly do what he wanted. As such he has de facto control over Bitcoin, though I personally doubt it’s something he would do.
the idea that every miner in china will jump when xi says is pure fantasy.