Xiaogan Township is one of the four townships in Macheng County in Ming Dynasty. Xiaogan Township in Macheng is located in Shenjiazhuang, Gulou, Macheng City. However, in the eighth year of Chenghua in Ming Dynasty (1472), Xiaogan Township was merged into Xianju Township. It is a sacred place in the minds of many people in Sichuan and Chongqing. The migration movement in Ming and Qing Dynasties is one of the most important parts in China's migration history. Macheng is one of the "eight migration birthplaces" in ancient China, and it is the origin and distribution center of "Huguang filling Sichuan".