What is the fate of the "Guizhengren" who fled across the border to the Southern Song Dynasty after the national subjugation of the Northern Song Dynasty?

After the Jingkang Revolution, Zhao Gou re-established the Southern Song regime in the south. However, in a large area south of the Yellow River, there are still some adherents of the Northern Song Dynasty, many of whom are officials or people loyal to the Song Dynasty. Later, they organized together to go to the Southern Song Dynasty, and later called these people Reformed Sect.

Zhao Gou's first step after the establishment of the Southern Song Dynasty was to recruit northern adherents, because his regime needed the support of the people, and many of these northern immigrants were talents, which would be of great help to the establishment and stability of the Southern Song Dynasty. Later, several emperors accepted the imperial edict of reform, which actually played a very good role in protecting those northern immigrants to a great extent.

Later, he also negotiated with Jin in the Southern Song Dynasty. Finally, the two sides agreed that as long as those who crossed the Song-Jin border and defected to the Southern Song Dynasty, the Jin State would not be recovered and the Southern Song Dynasty would not be repatriated. Therefore, these reformed people had certain legal protection in the Southern Song Dynasty. Treating these reformed people, the Southern Song Dynasty also gave them land, reduced taxes and recruited soldiers. In fact, these reformed people enjoy some rights that people living in the Southern Song Dynasty did not have.

This will psychologically make these reformed people feel a sense of belonging and protection. However, in the late Southern Song Dynasty, those who were reformed were excluded, because the Southern Song Dynasty itself had limited land and national strength, and there was no huge financial resources to support those who were reformed. Moreover, the residents of the Southern Song Dynasty at that time were unwilling to take in the refugees of the Northern Song Dynasty again, because if they did, it would definitely do them some harm and be detrimental to their stable life. In the later period, Jin also forced the Southern Song Dynasty to repatriate the reformed people, so the reformed people were very popular when the Southern Song Dynasty was just established, and were rejected in the later period.