Workers shovel glauber's salt at Yanhu Lake's salt fields on Feb 16. Yanhu Lake, an inland saltwater lake covering an area of 132 square kilometers, is called China's Dead Sea due to its high salinity. It's estimated that the lake will yield some 1.2 million tons of mirabilite (glauber's salt) and 70,000 tons of magnesium sulfate in 2017. [Photo/Xinhua]

The aerial view of Yanhu Lake after workers have shoveled glauber's salts (L) and the crystallization pond before it is collected (R). [Photo/Xinhua]