When I saw the wetland park on the itinerary, I was very disdainful. How can there be wetlands in the desert? It must be a lie to tourists. However, when our car finally stopped at the wetland park, I discovered that I had a small look at this place called "Qingtu Lake". Qingtu Lake is the tail lake of Shiyang Lake, which is the lower reaches of Shiyang Lake. In the "Shangshu. Yugong" of the Eastern Zhou Dynasty, there is a record of "Dayu Water Treatment, As for the Wilderness", and the wilderness is today's Qingtu Lake. Qingtu Lake used to be a breeze, with water and sky. During the Ming and Qing Dynasties, there were still 400 square kilometers of water. The Hongyashan Reservoir of Minqin is now the largest artificial desert reservoir. However, Qingtu Lake used to be 160 times the capacity of the Hongyashan Reservoir. The amount of water is second only to the famous Qinghai Lake. Golden reeds danced in the wind in front of the eyes, the green lakes from time to time have wild ducks coming out to swim, and when people approached, they plunged into the water, making people unable to find shadows, leaving a circle to clear the waves. In the distant reeds, white birds flew up and down from time to time, like playing hide and seek with us. A road divides the wetland into two parts, overlooking from a high altitude, and a large piece of saline-alkali land is exposed to the surface.