In pics: Lop Nur, second largest saltwater lake in China

Aerial photo taken on Aug. 15, 2019 shows sunset at the salt pan at Lop Nur in Ruoqiang county, northwest China's Xinjiang Uygur Autonomous Region. Lop Nur, the second largest saltwater lake in China, is an important production base of potassium sulfate. (Xinhua/Zhao Ge)