What kind of historical event is it that Huguang fills Yunnan and Guizhou? thank you

In fact, there are no vast lakes filled with clouds. The history of immigration you mentioned mainly refers to the large-scale immigration that started in Hongwunian, which flourished in Huguang, Jiangxi, and then evolved into Huguang to fill Sichuan. After the wars in Song, Jin, Song, Yuan and Ming Dynasties, the two lakes plain is sparsely populated and barren. But after the development of Song and Yuan Dynasties, Jiangxi became the most populous province in China. At the same time, the area of Huguang is 2.5 times that of Jiangxi. Due to the relationship between population and land, the unified war of Ming Dynasty and the implementation of immigration policy in the early Ming Dynasty, the so-called phenomenon of "Jiangxi filling in Huguang" appeared, and a large number of Jiangxi population also flowed to Henan, Sichuan, Yunnan, Guizhou and other places through Huguang. In the Ming Dynasty, "Huguang filled Sichuan" was largely filled by Jiangxi. The frontier policy of the Ming dynasty directly led to the migration of hundreds of thousands of troops to the southwest, which led to the migration of at least 3 million Jiangxi people to Huguang and flowed to Sichuan and Yunnan-Guizhou with the population of Huguang. The so-called Huguang filling Yunnan and Guizhou is actually that Jiangxi fills Huguang, Huguang fills Sichuan and Sichuan fills Yunnan and Guizhou.