The largest human movement in history so far?

In the history of China, large-scale immigrants occurred between Hongwu and Yongle in the Ming Dynasty.

According to the "Hongdong County Records" of the Republic of China, "during the Ming Hongwu and Yongle years, Shanxi people moved to Chu, He, Beiping, Shandong, Henan, Baoan and other places many times, and trees were the gathering place". And in the "Guangji Temple, the bureau is resident, and it is up to Zhao Chuanzi to issue a document."

Some historical documents in China, such as The History of the Ming Dynasty, The History of the Ming Dynasty, A General Examination of Continued Documents, etc., have records of immigrants in the early Ming Dynasty. The records of folk immigrants are more abundant. A large number of folk genealogies, tombstones and ancestral inscriptions in Shanxi, Hebei, Shandong, Henan, Jiangsu, Anhui, Shaanxi, Gansu and other places have records of the migration of Sophora japonica in Hongdong County, Pingyang Prefecture.

There is a folk song: "Who is Gu Huai? Take off your little finger to test it. "