> Hi, propagandist?
Personal attacks are against site rules, and you've been here long enough that you should know that.
> China had no ambition for territorial expansion other than defending herself. That's the pattern for 2 thousands years.
China occupied Tibet. China invaded Vietnam twice. The first time, they stayed for a thousand years. "China has no ambition for territorial expansion" only if you accept China's definition of what is rightfully China. A bunch of us don't, though. For that matter, a bunch of nations don't.
Specifically with regard to Taiwan: Yes, China has a historical claim on Taiwan. (And, yes, Taiwan has a historical claim on the mainland.) Technically, as you say it is a civil war.
Practically, it's two countries. They have two militaries, issue two different passports, have two different currencies, etc. Neither one wants to admit this, but de facto they are two separate countries. (So are North and South Korea, even though that civil war legally isn't over either.)
So, legal fictions aside, for China to conquer Taiwan would be a dramatic increase of their actual territory. (That's kind of implied in the word "conquer".)
And it's clearly China that's the aggressor here. Nobody's talking about Taiwan invading and conquering the mainland. But China talks about invading if Taiwan even dares to say that they're a separate country. They act like, if we all play pretend with them, it makes their claim more legitimate or something.
Speaking of legitimacy, let's note that Taiwan is the legitimate government of China. The mainland is held by the rebels.