Jin Dynasty was a dynasty with nothing in the history of China. Although it ruled 100 years, in this 100 year, only 20 years after Sima Yan ruled, China was formally unified. After the Jin Dynasty in Sima Yan, the world was in chaos, and the people were in trouble, and the war continued, and the people were in trouble. Instead of leaving any material and spiritual legacy to China, the Jin Dynasty humiliated the country and even caused the darkest moment in the history of China.

In the modern history of China, when talking about ancient history, the Three Kingdoms used to be the Southern and Northern Dynasties, and the Southern and Northern Dynasties used to be the Sui Dynasty. There seems to be no mention of the rulers. This is because although the Jin Dynasty was a unified dynasty, its unification lasted for 20 years. In order to maintain his family's rule over the world, the Jin emperor wantonly enfeoffed kings all over the country. These kings have complete military and administrative autonomy in the fief. This is actually a reversal of history, abandoning the county system invented by Qin Shihuang and picking up the enfeoffment system before the Eastern Zhou Dynasty. Soon the problem appeared, and the Eight Kings Rebellion broke out. The Central Plains dynasty, which had just calmed down from the war in the Three Kingdoms, was once again in chaos, and the fierce infighting greatly consumed the military strength of the Han nationality. Leading the northern minorities to take the opportunity to sit in the university.

The Han people were driven away by the army of the Hu people from the Central Plains where they lived in their time and came to Jiangnan, which was still a wilderness at that time. In fact, it is equivalent to the Han people being destroyed by the conference semifinals. From then on, the Eastern Jin Dynasty had no power to compete with the Hu people's army in the north, and when the Northern Expedition in China broke out, the population of Han people in the north was slaughtered from 10 million to only 1 million.

Almost all the emperors in the Jin Dynasty were bad emperors. In order to ensure the purity of royal blood, the Jin Dynasty practiced consanguineous marriage, leaving many royal families with mental retardation. In the late Jin Dynasty, Buddhism prevailed, and a large number of lazy young people became monks, which greatly reduced the social productive labor force. The whole Jin Dynasty has nothing to commend, so it has a low sense of historical existence and is the darkest dynasty in China's history.