The Dange'er Ancient City is located in Wuyuan County, about 40 kilometers west of Xining City. It has been thriving in the history of tea and horses. Because of its unique location, it has the title of “sea Tibetan throat”. Today, there are many shops in the Dange'er Ancient City, which are prosperous and lively. Many tourists who go to Qinghai Lake from Xining will visit when they pass by. The ancient city is small in size, with a Dange'er Street as the center, and the houses on the street are all brick-and-grey buildings in the northern town.