According to the recent research published by the University of Cambridge Centre for Alternative Finance, the Chinese part of global BTC production power slid down from 75.5% (Sept 2019) to 46% this April. This crash was urged even before a recent crackdown made by financial authorities on digital assets.
It is important to note that this country was a leader in the sphere of worldwide crypto mining.
During the same period, the US and its share of hash rate soared up to 16%, and this country is the second biggest BTC producer. Kazakhstan, as well as Russia and Iran, gained during this period too.