The ancient city of Dukezong is the best preserved and largest Tibetan population in China, and it is the hub of the ancient tea-horse road. Located in Shangri-La County, Diqing Prefecture, Yunnan Province, the ancient city of Dukezong is an ancient city with a history of more than 1,300 years. It was once the window of cultural exchanges between the Tibetan areas of the snowy areas and the areas of the region, and the economic and trade links between the Sichuan and Tibet regions.