Crescent Lake Yueyaquan also called Chinese is a beautiful crescent-shaped lake located 6 km from the city of Dunhuang in the south arm of the Sand Dune echo. The water of Lake Crescent is so pure and clear that resembles an emerald jewel in the sand. Along the side of Lake Crescent is a pagoda in the Chinese Han architecture. A street lined with souvenir stalls leads from the entrance of the complex. Many tourists ride camels here, organized by complex operators to get to the top of sand dunes.
The lake has been in existence for at least two thousand, but for decades, it has been gradually disappearing. According to measurements made in 1960, the average depth of the lake is 4 to 5 meters, with a maximum of 7.5 meters. In the 1990s, the lake area has shrunk to only 1.37 acres (5,500 m2) with an average depth of 0.9 meters (1.3 meters maximum). Crescent Lake has dropped more than 25 feet in the past three decades, while the groundwater elsewhere in the region fell by no less than 35 feet.
In 2006, the local government, with the help of the central government began to fill the lake and restore its depth, depth and size have been growing every year since.