Introduction to Yanjin: Yanjin County is a county in Zhaotong City, Yunnan Province. Named after having salt production in salt wells and crossing the ferry crossing. In the northeastern part of Yunnan Province, the ancient residence of the monks. The Xia, Shang and Zhou dynasties belonged to the Liangzhou domain, and later belonged to the genus. In 587 AD, Kaibian County was set up, and the township of the township of Tantou Township was stationed. In 1727, the land was changed to the land, and Yanjin was attached to the Wumeng Hall. In 1917, the county was officially established and named Yanjin. In Yanjin County, there are relics such as Qin Wu’s “Five Feet Road”, “Tang Yuan Zi Cliff”, “僰人棺棺”, “古城堡”. Rich in mountain medicinal herbs, a wide variety of orchids, high-quality medicinal prices of black-bone chicken; limestone, anthracite, and abundant water resources are a mountainous county to be developed.