Were there any immigrants in Gansu in Song Dynasty?

According to the records of ancient historical documents, we can know that Gansu Province experienced four migrations, the first was 1 during the Qin Shihuang period, the second was after the establishment of four counties in Hexi by Emperor Wu of Han Dynasty, the third was during the Northern Wei, Sui and Tang Dynasties, and the fourth was during the Ming Dynasty. During the Song Dynasty, there was no immigration tide in Gansu.

Gansu is a multi-ethnic province with many nationalities, which has left this land with rich and colorful humanistic connotations. The Ming Dynasty was the period when Gansu local culture was formed. Immigrant activities not only filled the shortage of population in Gansu, but also developed the culture in an all-round way in the great integration.