Okay, I see that he's trying to write something in english for the first time, so I think we should not like, bash this newb like a wolf pack.
Basically he's saying that China's history is overrated, because it's all Communist China's propaganda. Like according to what he's saying, all those succeding dynasties are unrelated, but it is the current government who is claiming all of them under this idea of "China."
But to tell you the truth, I didn't even want to read the post because of the poor grammar structure. Sorry to be offensive but its true