Mostly they can't invade because their navy wouldn't make it out of the South China Sea without being sunk. Take your Red Dawn wet dreams elsewhere.
Amazing isn't it?
In his wet dream the Chinese load up pleasure cruise ships with millions of Chinese troops, and invade... San Francisco? Proud Boys militia to the rescue! Take their outboard motor boats, and sink those commie bastards!
After someone thinks to remake the 1983 The Day After movie with a nuclear exchange between the US, and Russia, then... a movie titled "The Day after That", featuring a nuke exchange between the US, and China. China has enough missile nukes to hit 1000 cities/targets.
Never fear again! The Proud Boys will be there to ride the bomb dropped out of a B2 (or forthcoming B21), like in the movie Dr Strangelove. Waving their MAGA hats in a cowboy circle, yelling yeeehaawww. That could be their wettest wet dream. Target being the evil Chinese Covid lab.