China isn't trying to kill Bitcoin. They're trying to own it, mine it, and control it. They're not banning, they're consolidating.
Nope. I don't think that they are trying to control it. If they want to control it, then it is no big deal for them. They can just redirect all their military super-computers to mine Bitcoin. The 51% barrier will be easily broken, and the Chinese government will be able to do whatever they want with Bitcoin.