The fact is no one country can stop China alone. What is the UK doing, you ask?
We are removing Huawei and ZTE infrastructure from 5G networks, we have naval ships including the Queen Elizabeth aircraft carrier patrolling the South China Sea. Biden wouldn't even do that, he'd be too busy spouting off about systemic racism, identity politics and the GND in a futile attempt to keep Occasionally Cogent off his back!
As for Hong Kong, we have given full rights of settlement to any Hong Kong citizen that wants to leave, that's what my fucking country has done, Billy Boy!!