Reasons for Hongwu's Two-year Great Migration

The reason of Hongwu's two-year migration: the Yuan government carried out ethnic oppression in China for many years, and the floods, droughts and famines in the Huanghuai basin continued, which finally aroused the Red Scarf Army uprising that lasted for more than ten years. The Yuan government brutally suppressed, and desperate wars for territory and land occurred from time to time. Nine times out of ten people in Huaibei, Shandong, Hebei and Henan were killed. The wounds of the war at the end of the Yuan Dynasty were not healed, and the "Battle of Jingnan" followed in the early Ming Dynasty. Hebei, Shandong, Henan, Anhui and other places have suffered greatly, and almost all of them are uninhabited.

"Hongwu two years" is not only a major difficulty in the origin of Sichuan immigrants, but also a puzzling topic in the history of immigrants in the Ming Dynasty. Looking around the migration activities in all parts of the country in the early Ming Dynasty, except the migration events in the exact year, they are usually expressed in the form of "two years of Hongwu".