OK, in a world where PRC, after victory in Chinese Civil War in 1949 decided to take invasion of Taiwan, to finish off the Nationalists first ( and because of that Chinese tell N. Koreans to wait a year or two with the attack on South ).
Many people say that, wthout Korean War, US would let Chiang fall since 1950. So, let's assume no active US military support to Chiang and KMT.
So, is PRC capable to do it in late 1950 or by end of 1951?