Introduction to Yanyuan: Yanyuan County is located on the southeastern edge of the Qinghai-Tibet Plateau and on the west bank of the lower reaches of the Yalong River. It covers an area of ​​8,398 square kilometers and has a population of 335,000. The scenery in the territory is plentiful, the products are abundant, the climate is pleasant, and the people are full of people. In history, it flourished with the "Southern Silk Road". Nowadays, it is famous for its benefits of salt and iron, the victory of mountains and rivers, and the marriage customs of Mosuo people in Wuhu. It is known as the mysterious "daughter country".