There are two governments that contain the substring of "China" and their constitutions claim a single unified Chinese country that includes mainland and Taiwan island, most of the world, seems ok with that.
Sounds like 5D chess, since Taiwan applied to be the "sole legal government of China" in the UN back in the 50s. (which was rejected) then they rejected the 70s resolution of "two Chinas". So it comes through as ambitious. But I will let the Taiwanese correct me on that.
Yes, the situation was different in the 50s and 70s. But for the last few decades it has been explicit chinese policy that any change of the status quo would lead to an invasion.
Somewhat similar to HongKong where China apologists always bring up that HK never had any democratic autonomy while conveniently not mentioning that China explicitly stated that such would instantly result in an invasion.
Putting a gun to someones head forcing him to say something and then using that against him.