Bizzarely, even today, Taiwan's interpretation of the "One China" consensus is that Taiwan, is the legitimate ruler of all of China, including the mainland. I

Bizzarely, even today, Taiwan's interpretation of the "One China" consensus is that Taiwan, is the legitimate ruler of all of China, including the mainland. I'm not sure why, maybe the Taiwan sees this as a bargaining chip, to be given up at an opportune moment, in exchange for something else, e.g. the Mainland accepting Taiwan's independence. I suspect this would have been possible at some point when the PRC was weak (maybe in the 1960s or 1970s) but seems unlikely now. I read somewhere that this might be because a formal acceptance of no longer being rulers of all of China, might trigger the Mainland's anti-secession laws, which in turn would lead to an invasion on Taiwan by the Mainland.