China was main mining center in the past but it has put a complete ban on bitcoin mining which has lead to hashrate distribution across the globe and now China is no longer biggest player.You can check this article for more details :
https://worldpopulationreview.com/country-rankings/bitcoin-mining-by-country United States: 35.4%
Kazakhstan: 18.1%
Russia: 11.23%
Canada: 9.55%
Ireland: 4.68%
Malaysia: 4.58%
Germany: 4.48%
Iran: 3.1
Moreover Mining is a process through which new coins come into circulation not confirming the transactions and whenever a block is found the transactions are added in that block in blockchain of which the transaction fees goes to miner along with the block rewards.
Yeah I don't know where did OP get this standard as China already Banned Bitcoin and yes Miners are already Fled the country and divert/migrate to other countries.
But really? Kazakhstan is the second largest mining country in the world now(second to USA? even Bigger than Russia?
thanks for this share mate , I never learn this till now.
Some news said the report stats is innacurate but there are many Chinese people who are still mining even though mining crypto is banned in China. However the operation is hidden most of them hiding their miner through a proxy and the source of their power come from solars to hide their power consumption and presence from the public.