Not just BCH, but I read that even for BTC more than 50% of hash rate is coming from China. And even though it is very difficult, but being an authoritarian govt. it isn't very difficult for China to take over that 50%+ mining hashrate. So, ya it a real danger.
China has a big advantage of cheap electricity, locations, labour and supply chain. Hard to compete with it. But if you really want to decentralize your blockchains, then I guess you'll have to contribute hashrate from other countries, even it is expensive.
This is no joke, a couple of years back my government (Venezuela) tried to make a miner registry, and they were seizing miner's equipment to use it themselves. Went as far as to use drones with thermal sensors to check if apartments with high energy consumption were actually being lived in or used as mining farms to raid. Eventually they gave up on it because the registry was unenforceable our government
is a joke.
The whole Chinese fund thing is really worrisome too, specially considering that this is supposed to go live this month and there's still no word about it.