Why did the northern nationalities migrate in Wei, Jin, Southern and Northern Dynasties?

Wei, Jin, Southern and Northern Dynasties was a period from turmoil to stability and unity. The special social phenomenon in this period is various immigration movements. Then why do the nationalities in the north migrate? There are many reasons for migration. The main feature of ethnic migration in this period is that there are many reasons for migration.

1. Before Wei, Jin, Southern and Northern Dynasties, the economic, political and cultural centers of China were always in the Yellow River Basin and the Central Plains. Since ancient times, the reasons for attracting the surrounding ethnic groups to migrate inward are the relatively good natural living environment and advanced economic development level in the Central Plains.

2. During the Wei and Jin Dynasties, Tuoba, a Xianbei people, originally lived in the northern part of Daxing 'anling and Ergon. The historical data of their living conditions describe it as "unifying the secluded capital in the north, moving in the vast wilderness, and taking hunting as a career". When Emperor Wu criticized Fen, they gradually moved to Yinshan and Hetao today after their previous migration experience, where the natural geographical conditions were more suitable.

3. During the Wei, Jin, Southern and Northern Dynasties, wars continued, especially after the demise of the Western Jin Dynasty, other ethnic minorities except the Han nationality also established political power here. These regimes often take measures to expand their territory and enhance the strength of the whole country, so they plunder labor, wealth and land. Wars often occur between regimes, so frequent wars will inevitably become the reason for the migration of ethnic minorities.

In the cruel war, thousands of people became slaves, and the fate of these slaves was that they could only be taken to the controlled areas by the victors.

5. Rulers, for their own political and military needs, sometimes force people to migrate to big cities or military centers.

6. After the end of the Eastern Han Dynasty, many people moved to Liaodong to escape the Han nationality in the war-torn Central Plains. Until the Yongjia Rebellion, the number of people who moved to Liaodong was equal to "more than ten times the old place". During the Sixteen Kingdoms period, after Zhang and his son controlled Hexi area, the social order was relatively stable, so "Zhongzhou asylum seekers came in droves". This phenomenon.