I disagree: a big reason Beijing is so keen to unite all the Chinese-speaking (Chinese-writing to be exact) lands under its rule is that Chinese history shows that when China is divided into multiple polities, war frequently breaks out between them and rivals like Japan can keep China weak by playing one polity off against another.
1. So if the problem is that war frequently breaks out between them, then in order to fix it, China is (or at least seems to be) willing to go to war with Taiwan? The cure is the disease.
2. China is not all of humanity and all of history. I cite the US and Canada as a counterexample.
