If you know your facts, yes, China has more bodies than any other country in the world. So they can keep coming, and coming, and coming. They are behind technologically, compared to most of the usual suspects.
I do not think the interest of 'trade' will stop this.
I think they are also tired of Bush's saber rattling.
International law is on their side as well, as Taiwan's theirs. So the UN will not stop this either.
However, I do not think much will come of this. China will force Taiwan to submission, the world with be in awe, and life will go on with more Bush tough talk.
