Those places have their own culture, identity, political views, and way of life. All of that gets erased and replaced with the CCP’s ideology and Han Chinese culture through a process called Sinicization (https://en.wikipedia.org/wiki/Sinicization_of_Tibet). It’s a very effective way of erasing and controlling people.
Plus given that the government of China is very authoritarian and controlling and not democratic, I don’t think it’s good for the world when they get more land, resources, and economic power (which turns into military power).
Plus given that the government of China is very authoritarian and controlling and not democratic, I don’t think it’s good for the world when they get more land, resources, and economic power (which turns into military power).