How did the ancient dynasties of China solve the problem of "refugees"?

From ancient times to the present, especially during the Spring and Autumn Period and the Warring States Period, the status of farmers as the main body of production in feudal society has been constantly gestating refugees. North Korea's handling is different:

1 and the Han Dynasty, the problem of refugees was characterized by large scale, regional concentration, long duration, radial migration and increasingly complex components. Apart from natural causes, the refugee problem is caused by the tyranny of harsh officials, the merger of powerful countries and war. The Han government took measures such as restricting, suppressing and repatriating, controlling and appeasing, naturalizing in new places, and building urban counties to resettle refugees. Returning home, dying, entering the border into the city, being a handmaiden, being a soldier, living in the mountains or taking part in a peasant uprising are the basic destinations for refugees.

2. Wei and Jin Dynasties: The rulers tried their best to take various measures to prevent the generation of refugees. After the refugees came into being, they tried to resettle on the land. Although these measures sometimes alleviate the tragic fate of refugees to a certain extent, their fundamental purpose is still to safeguard their own rule. The appearance of the five chaotic flowers is also the result of the cruel treatment of minority refugees in the Western Jin Dynasty.

3. Sui, Tang, Five Dynasties and Ten Kingdoms Period: At the end of Sui and Tang Dynasties, many peasants were forced to migrate because of the fierce fighting between military forces and soldiers; Coupled with constant natural disasters, the exile of farmers has intensified. In the face of refugees in trouble, enlightened rulers took some first-aid measures, such as opening warehouses to release grain, abolishing exorbitant taxes and miscellaneous fees, reducing and exempting rent taxes, etc., in order to relieve people's difficulties and save the ruling crisis. The measures taken by the ruling class have achieved certain results, but on the whole, they have little effect, and exile still occurs from time to time.

4. During the Song and Yuan Dynasties, the rulers adopted a series of policies in terms of prevention, relief and long-term resettlement of refugees, especially in the Song Dynasty, a large number of refugees were recruited as government troops, resulting in the phenomenon of "redundant soldiers".

5. Ming Dynasty: The court of the Ming Dynasty carried out strict household registration management, evacuation and suppression on refugees, killing too many people, which led to continuous peasant uprisings, especially the Jingxiang refugee uprising in Chenghua and the peasant uprising in the late Ming Dynasty, which led to the demise of the Ming Dynasty.

6. Qing Dynasty: The Qing court dealt with refugees by reforming taxes, encouraging handicrafts, reducing disasters and epidemic prevention, and guiding immigrants. However, with the obstruction of landlords and the weakening of national strength, this can only cure the symptoms, not the root cause.