First of all, this proposition is logically incorrect. But politically correct. At present, historians serve politics. There is no independent brain and personality. The Jin Dynasty was caused by civil strife of the Han nationality and foreign invasion. There are many such examples in the world, and many countries are divided. Of course, for the sake of unification. It can be said that all countries were Han Chinese during the Three Kingdoms period. Although it is divided, the historical concept of the Han people leads everyone to want to unify the weak regime. Naturally, Wei, the strongest in the end, unified China. After Jin usurped power, he did not make progress and did not want to be overbearing. Officials talk nonsense. As a result, foreign invasion led to a large number of Han people moving south. Although several northern expeditions were short-lived. The ethnic minorities in the north, because of scarcity, hold our culture in high esteem. Change your last name. As a result, the nation soon became Chinese. But in the process, a large number of Han Chinese were slaughtered. In fact, the Sui Dynasty in the north unified the Han and Jin Dynasties in the south.