China owns more than 80% of the hashrate in bitcoin mining. They were involved in bitcoin mining very early and it brought them a lot of profits. They recently allowed crypto mining operations to be legal. Claims related to Bitcoin or blockchain from China are making the market volatile.
https://www.buybitcoinworldwide.com/mining/pools/China as in the government or just random people. Because if we are talking about the government bitcoin profits are a nothing burger in terms of GDP, it doesn't even make a blip on their radar as far as profits go. China doesnt own bitcoin, nobody does that's the beauty