The Yunnan People’s Self-Defense Army Yuanjiang Construction Monument is located 60 meters southeast of the intersection of Yuanjiang Hani and Yi Autonomous County in Yuxi City, at about 220 meters west of the Sun City Square on Wenhua Road. In June 1948, the Yunnan Provincial Party Committee decided to establish the South Yunnan Work Committee of the Communist Party of China. In the same month, the South Yunnan Work Committee of the Communist Party of China, with Zhang Huajun as the secretary, was officially established in Pengcheng, Yuanjiang. On July 25, the founding conference of the Yunnan People’s Self-Defense Army was held in Pengcheng, with three squadrons and one local squadron, totaling more than 150 people, equipped with about 70 to 80 various rifles, two light machine guns, Yu Weimin serving as the military commander, and Tang Dengmin in charge of political work. After the establishment of the self-defense army, it maintained the interests of the masses everywhere and won the support and praise of the masses through practical actions.