Translate that the English and what do you get?
Geographically "China" has changed sizes more times than I can count. There have historically been many "China's".
You need to study Taiwan's history a bit more.
It was a province of China for all of 10 years.
Chinese people only moved there 300 years ago or so.
It was given to Japan.
If the same criteria applied to other nations, we and Austrlia and Canada would be part of the UK.
Your ideas are fine, but the problem is, no one in China believes them and no one in Taiwan believes them or cares about them.
There is no one (except maybe some Chinese dissidents in exile) thinking or hoping for a unification of Taiwan with China based on freedom and democracy and Dr Sun's principles.
Korea and Vietnam were more a part of China than Taiwan ever was, yet no one is talking about them reunifying.
This ia all about the KMT escaping to taiwan, not about Taiwan.
If they'd escaped and taken over Korea the chiComs today would be screaming Korea is part of Taiwan.