Sure, and before the Qing armies invaded it was declared an independent kingdom by a Ming loyalist who was born in Japan to a Japanese mother, and before that there were a couple of European outposts and scattered settlers from Fujian, and before that there were indigenous peoples who themselves are part of an ethnic group that can now be found everywhere from Madagascar to New Zealand.

The point I was responding to was the misleading comment that the people of Taiwan are actually just engaged in some kind of internal dispute with the CCP, which is entirely a CCP framing of the issue. Few if any people in modern-day Taiwan believe that they are the true inheritors of the Chinese mainland. The pretense has to be upheld in order to preserve the status quo, but in practice there is no serious movement staking a claim to any part of China.