Russia Boliang Yadan, located in the cold lake area of Qinghai Province, is known as the "Devil City of Qinghai". Speaking of Devil City, everyone may think of Xinjiang, but Xinjiang's three Yadan Devil City, the total area is only more than 100 kilometers, and in the Qinghai Province Chaidamu Cold Lake area, The total area of Yadan has reached 2.15 10,000 square kilometers, which is one of the largest and most typical Yadan landscapes in the world.