I mean, China basically said it would go to war to conquer Taiwan. China just fired missiles over Taiwan and into Japanese territory a few months ago. Seems like they're advertising a willingness to attack; why don't you believe them?
The really tricky part about Taiwan. Politically I mean, is that it is not another country, it literally is china.
A history lesson the chinese empire fell apart in the early 1910's, there was fragmentation until it was sort of reunified in the late 1920's the communist's fought the reunified government in the thirties, paused for WW2 and were successful against the government in the 1940's. the pre-communist government still exists on the island of formosa(taiwan)
Now it is hard to say which government is more legitimate. The national government only really had ruled for 10 years at that point and by all accounts I have read they were sort of a shitty government. taiwan appears to be doing ok nowadays but remember that it ran under a military dictatorship until the 1990's
Taiwan at this point would probably be fine relinquishing their claim to the chinese mainland. but the communists do not want to let them go.
My only real take away from all this is that the chinese are there own worst enemies, what the japanese did to them in mancheria was brutal, far worst than the holocaust. What the chinese did to themselves afterwards was even worse.
