Maybe if the Chinese Communist had no other place to go, they might end up in Formosa. But wouldn't they most likely establish themselves as a country in their main base of operations in Manchuria? What if China was partitioned either before or after the Chinese Civil War with the ChinComms given a Chinese Democratic Republic of Manchuria in the north under Mao Zedong and retaining the Nationalist Republic of China in the south under Chiang Kai-shek? Would there be any Korean War or Vietnam War?