Ok since my “post is full of dumb” let me provide some reference material so you can enlighten yourself. Here is a Wikipedia article on the One China policy. Here is on from the Taiwan page.

EDIT: Also I never said that Taiwan considers itself part of China. I said that the Republic of China considers themselves to be China, as in, the official Chinese government. The PRC also considers itself to be official China and it considers Taiwan to be a rogue state, like how Catalonia was going rouge in Spain except the Republic of China considers itself the govt of China.