I am confused what you are trying to say here? Are you saying because Dynasty’s of China ruled Taiwan hundreds of years ago that some how the Communists Chinese now have some kind of right over it? I am lost.
To the Chinese, Taiwan is still part of China. Even if for example, a democracy were to occur in China, they will still have the same sentiment. A recent poll done on the internet in China asking whether Taiwan is part of CHina and whether China would have to use force IF Taiwan declares independence was done -- over 90% said YES. When asked to volunteer to the army for the invasion, over 80% of COLLEGE GRADUATES said yes.
The problem is that the U.S. doesn't understand Chinese history at all -- it fails to note how China suffered under the Western powers in 1800's and territories, MASSIVE amounts of territories such as Mongolia, Siberia, etc. were ceded. It fails to understand the sentiment in China about the Japanese. This is why mentioning territorial integrity or sovereignty in China menas a huge deal for them.
By aligning the Japanese with the US defense pact on Taiwan, the US has essentially unified the Chinese people on the Taiwan issue. Not a very smart move by Bush.