No way, China can't ban bitcoin, bitcoin is running on the Internet, unless they cut the power or Internet connection, which is impossible.
fun fact. even if china pulled the plug on the chinese internet. the pools would connect via satalite to stratums outside of china. only disruption it would cause is about 1minute of pool hopping before resuming back to usual..
but thats as we can both agree at the extreme and irrationalable concept of china pulling their internet offline.
so dont worry. bitcoin mining would continue. unhindered. pools have already mitigated these risks years ago, even the absurd near impossible risks