日中関係

＞Tibet is part of china for thousand of years. so when you use the such word like invasion doesn't make any sense.

Tibet has been independent state before Mao brutally invaded 1950. Mao invaded Tibet when the world is busy at Korean Penninsula. Mao's invasion is famous for its brutality. Lot of priest was killed and women and children were killed and raped. Total number of murder amounted to millions of millions people.