Sounds like the same old "China is going to ban Bitcoin" nonsense we've heard dozens of times. Any reputable sources?
Sure China could do it, but are they also going to seize and destroy the machines? Will they do it before the news comes out? Too late for that. If they don't destroy the machines, they'll be sold to someone outside China to use there. Will China cease production of ASICs? Won't TSMC, NVIDIA, and others just take over?