The source of Sichuan people now

Hello! At the beginning of Ming Dynasty, the north migrated from west to east, and the typical example was Hongdong migration. In fact, Hongdong is just a transit station. In the early Ming Dynasty, the south migrated from east to west, which typically filled Huguang, Jiangxi, and Huguang was also a transit station. However, this transit station is much bigger and longer than Hongdong, spanning two dynasties! In fact, the Sichuanese mentioned by the subject should include Chongqing people. Their origin and history have a term called Huguang filling Sichuan, but there is actually another word called Huguang entering Sichuan. In the final analysis, it is actually Jiangxi that fills Sichuan and Jiangxi enters Sichuan! Of course, this is the main source of moving into Sichuan. Accurately speaking, the population of Sichuan is composed of a small number of local indigenous immigrants from Shanghai and Guangzhou and immigrants from other provinces.