Interesting thread...
For some history...
China had been in a particular state of civil war, with two factions emerging as the Nationalists and Communists - led by Chiang Kai-shek and Mao Tse Tung respectivly. Each had support from outside, with greater support from the USA and USSR.
At the opening of the 2nd World war the Nationalists were roughly on top, but then bore the brunt of Japanese incursion - during which a three way war was fought. The outcome was a stalemate with the Japanese who were unable to make great ground, but at the end, with growing support from the USSR the Communists were resurgent.
The end saw Chian Kai-shek and the Nationalist army withdrawing to the the island now know as Taiwan.
Each maintains claim to the other territory.
Frankly, I think the problem is with a remaining aristocracy left over from the previous conflict, and the evolving one in Mainland China.
The average person won't give a rats behind.
If China invaded Taiwan, well, I'd be mixed.
On one hand I think I would personally involve myself because:
1. Continued Chinese assertion to Taiwan is evidence of continuing imperialist agression - more likely to be piqued by a succesful invasion.
2. I consider Taiwan a sovereign nation and it's citizens to right to self determination against a larger aggressive nation.
But I might not involve myself because the tension is partly self-inflicted.
Yeah, like I'm going to help out in a brawl when two local bullies finally go at it after bawling at each other for ages?
My answer, then

is: not sure.