Hong Kong? Taiwan? Uyghurs? Tiananmen Square? Tibet?

China hasn't done anything with Taiwan other than saber-rattling. Hong Kong, Xinjiang, etc. are all part of China.

The US is (mostly) protective of its citizens but (depending on administration) varyingly hostile to outsiders (immigrants, starting wars, etc.).

China is suppressive towards its own citizens, but has been largely peaceful with other countries and immigrants/visitors. (Granted, China has way fewer immigrants than the US, so this is not comparable).

The Dzungar would like to have a word with you, oh wait.

I believe China only got this huge because all its neighours couldn't help joining the peaceful middle realm \s