I was just stating the fact that there were short lived dynasties and there were dynasties that lasted for hundreds of years. Is that or is that not a fact?
It takes a lot of work to build a stable and long lasting dynasty. Some, like LiuBang and ZhuYuanZhang, resorted to mass murder. Others like ZhaoKuangYing succeeded with more humane methods. By that standard, what Mao did was no exception, not different in principle from what LiuBang did thousands of years ago.