On 21 May 2021 China’s State Council Financial Stability and Development Committee, chaired by Vice-Premier Liu He, said the country would crack down on bitcoin mining and trading behaviour as part of preventing financial risk. It was the first time that cabinet-level committee had named mining in public like this. Inner Mongolia had already been chasing farms for energy targets. Xinjiang, Sichuan and Yunnan followed with closures into June. Hashrate on public estimates fell hard, then showed up in Kazakhstan, the US, and other plugs. Difficulty came down. Blocks continued.
This is not the 24 September 2021 ten-agency notice that calls virtual-currency business illegal financial activity. May is machines and power. September is the shop. Tesla’s 12 May payment U-turn is the same month and a different URL — a company energy argument, not a provincial raid.
What happened
China had been a large share of bitcoin hash because power was cheap and barns were allowed until they were not. Seasonal hydro in Sichuan was a known migration. A political line from the centre turns a grey industry into a moving truck. The protocol’s response is automatic: if hash leaves, the next difficulty epoch is easier. No vote. No hard fork.
Why it matters
Energy debates are real. So is the fact that hash is portable and the chain is not a jurisdiction. If you hold bitcoin, you did not need to “upgrade” because a province unplugged. If a headline said Bitcoin died because China banned mining, the difficulty chart is the correction. See how to read a crypto headline without getting played.
What happens next
More provincial notices, a hashrate trough, then a map that looks more American. The September business ban is a later stamp. Nothing here is an instruction to buy, sell, or mine bitcoin.
