The big lie has stuck. Taiwan didn't split from China.
Taiwan wasn't even part of China. It was part of Japan. It had been part of the defeated Japanese empire and it was bombed out by us and defeated by us. As part of an agreement between the major allied governments, after Japan's loss Taiwan would be integrated in to the Republic of China.
But less than four years later the Republic of China was defeated in the longstanding Chinese civil war (of which tawan took absolutely no part). It wasn't for two or three years after this that Japan's surrender was formalized and they formally relinquished soverinty over or any claim to Taiwan.
Taiwan didn't split from China in 1949. This is one of those lies that has been told so often over the decades that nop pone even questions it or thinks about it.
Hint: the Japanese did not steal it from the Japanese natives.
I'm no Sinophile, but don't give the Japanese something they historically didn't have. Chinese have been resident on Taiwan since before it was called Taiwan. I'm not about to back the Reds here, but it's certainly more legitimately Chinese than Japanese.