China never have to touch BTC. All they have to do is short it. You see all these dumb companies lining up to buy a ponzi scheme while China just keeps making money dumping on them. BTC mining is being phased out or move to other countries to drain their electricity. They also control money printing machine tether and Binance.
Sell your bitcoin now and focus on newer currencies like ETH, Polkadot, and etc.
You lost me when you told me to buy more of the other ones that China is mining.
China mines only 2% of Ethereum, most of the mining takes place in Europe and America. You need to control at least 51% of the network to fuck around, and even then there's not really much you can do.