China can't do that, otherwise the Communist Party will fall and lose all its power it has carefully built over decades. Why do you think they still keep WWII alive? As long as they keep the population mad at the Japanese, the people won't come to the conclusion that their government is a piece of shit. China has the unique position of being a power that is completely safe. They have no real enemies and nobody will ever invade them because they're too big to digest. So the only threat is their own people.
Chinese leaders have of course read the Big Four classics of Chinese literature. In these, kingdoms are called into existence and swept away in revolt on a single page. The Communist Party knows it is on one of these pages. The only thing that matters is that they are not swept away like all the others. They'll do whatever it takes to stay in power because they've seen the alternative. And frankly, some of these leaders who were overthrown were total idiots. Communists are nothing if not the compete opposite of total idiots.