for one thing Taiwan is a soverign nation which will back down from being so
another taiwan will turn their country into a chinese death house if china invades not to mention how can china invade when their airforce is almost 70 percent ancient russian hardware and with no stretagic airlift
proper invasision alway have a long supply chain which is easly cut off by USN/taiwan patriots
reunicafication can only happen when the last vestiges of communism is throw by the way side like all other evil ideas such as Nazism and stalism