China accounts for about 20% of the cryptocurrency volume in the world to date. They just sold off a majority of that in irrational panic so the impact they can have on BTC now isn't that much. Litecoin is different. They own most of that.
Read this article about their volume in crypto. It settles the mind considerably
https://www.c[Suspicious link removed]m/2017/09/11/bitcoin-price-falls-on-reports-that-china-is-closing-local-exchanges.html