Why is Palestine Occupied and Not China?

Why do people say Israel is occupying Palestine but not that China is occupied by the Communist Party? Can someone explain this to me? Every single Communist country in history was brought forth by a violent revolution followed by an even more violent state crushing any resistance or dissent. The Republic of China still exists - in Taiwan. This was the government of China pre-Communists. The Communists literally stole China from the Chinese people. But no one characterizes it this way. Why not?