What will happen to farmers migrating to the south in the late Eastern Han Dynasty?

At the end of the Eastern Han Dynasty, due to the constant war in the north and the relatively stable society in the south due to geographical reasons, a large number of northerners crossed the south, bringing advanced production technology to the south and promoting the development of productivity in the south. During the Jin, Southern and Northern Dynasties after the Three Kingdoms, the north was further destroyed, and a large number of people from the north fled to the south, which not only brought labor and more advanced production technology to the development of the south, but also further narrowed the gap between the north and the south. By the Tang Dynasty, the south had reached the production level of the north.

By the middle of the Tang Dynasty, due to the destruction of the Anshi Rebellion to the north, the north was basically bankrupt. On the other hand, the south has surpassed the north and become the main source of government revenue. Since Tang Xianzong in Tang Dynasty, most of its wealth has been supported by income from the south. It can be said that the Tang Dynasty escaped the Anshi Rebellion, but it was entirely because of the south that the north was far behind the Five Dynasties and Ten Kingdoms until now.

Tracing back to the source, the economic advantage of the south can not be separated from the development of Jiangnan by the Wei, Jin, Southern and Northern Dynasties regime.