Where is the information about the great immigrants of the Ming Dynasty?

The Great Immigrants in Ming Dynasty, also known as Great Immigrants in Early Ming Dynasty, Great Immigrants in Hongdong, Great Immigrants in Hongwu, Great Immigrants in Sophora japonica and Great Immigrants in Hongdong, lasted from the third year of Hongwu (1370) to the fifteenth year of Yongle (14 17). The Ming government visited Pingyang, Luzhou, Zezhou and Fenzhou in Shanxi successively. 1 After the war at the end of Yuan Dynasty, after more than twenty years, Zhu Yuanzhang unified the world. However, at this time, the mountains and rivers were devastated and devastated. Shandong, Henan and Hebei are mostly uninhabited areas. In order to restore agricultural production, develop the economy, balance the population, make the world peaceful and consolidate the rule of the Ming Dynasty, Zhu Yuanzhang adopted an immigration policy during the Hongwu period of the Ming Dynasty, and moved in according to the proportion of "four families stay one, six families stay two, and eight families stay three". At the beginning of the Ming Dynasty, millions of immigrants moved to all parts of the country through the big pagoda tree in Hongtong County. Its time, scale and influence are unprecedented not only in the history of China, but also rare in the history of world immigration. This had a wide and far-reaching impact on the Ming Dynasty at that time and the subsequent social development. 1 business card photo source