During the Three Kingdoms period, the total population was only 9 million. Why did it soar in the Western Jin Dynasty?

At the end of the Eastern Han Dynasty, due to the Yellow Scarf Uprising, the whole Han Dynasty experienced the darkest moment since the founding of the People's Republic of China. At this time, the world was at war for years, and this period was also a period of frequent natural disasters. The Han Dynasty experienced the worst drought. At the end of the Eastern Han Dynasty, it was a great blow to the population of China. As the saying goes, there is not one in ten, but in fact the reality is much more cruel than this. At the peak of the Eastern Han Dynasty, the population of the Three Kingdoms was 50 million. By the end of the Eastern Han Dynasty, the total population of the three countries was only over 9 million. It can be said that more than 40 million people directly died in successive wars. At that time, Emperor Wu of the Jin Dynasty also issued several decrees, one of which made the population of the Western Jin Dynasty increase rapidly. This was the immigration policy at that time, allowing Hu people outside the Great Wall to move into the Great Wall.

In fact, the immigration policy of northern Hu people began in the Han Dynasty. After Emperor Wu of the Han Dynasty sent Wei Qing and Huo Qubing to visit Xiongnu, Xiongnu has been weakened. After many blows, it was divided into two Xiongnu parts when Emperor Wu of the Han Dynasty proclaimed the Emperor. At that time, the northern Xiongnu continued to move westward, while some of the southern Xiongnu stayed in the local area, and some of them went south to the Central Plains to marry the Central Plains people. From the Eastern Han Dynasty, nearly one million people went south to the Central Plains. At that time, it was said that due to years of war, Wei Shuwu and the three parties were in urgent need of nomadic troops to expand their military strength.

Because of the lessons of the Three Kingdoms and the Eastern Han Dynasty, Sima Yan, Emperor Wu of the Jin Dynasty, agreed to the request of the courtiers at that time, and moved the conference semifinals beyond the Great Wall to the Western Jin Dynasty to properly handle these conference semifinals and register them. Due to the large-scale migration tide, the labor lost due to the Three Kingdoms Rebellion was greatly compensated, which helped the Western Jin Dynasty to recover quickly. However, due to the participation of a large number of Hu people, there was a great contradiction between Hu people and Han people at that time, which eventually became the fuse of the demise of the Western Jin Dynasty.