Earlier quoted context omitted.
what do you mean by invade? Tibet, Xinjiang, Hong Kong are undoubtedly belongs to China. Sure the tightening is not good in a lot of ways, but I keep seeing the western media trying to convince the world that these regions should be 'independent', I wonder why they are doing that.
Tibet was independent before it was taken over by force
They declared independence in 1913 after the fall of the Qing but it was not recognized by the Chinese Republican govt.
The PRC re-annexed it in 1951.