Photo taken on March 15, 2013 shows the scenery of the Qarhan salt lake in Golmud, northwest China's Qinghai Province. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
A salt mining ship is seen on duty on the Qarhan salt lake in Golmud, northwest China's Qinghai Province, March 15, 2013. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
Photo taken on March 15, 2013 shows the scenery of the Qarhan salt lake in Golmud, northwest China's Qinghai Province. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
Photo taken on March 15, 2013 shows salt crystals displayed at the Qarhan Salt Lake Museum in Golmud, northwest China's Qinghai Province. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
A yak made from crystallized sodium chloride is displayed at the Qarhan Salt Lake Museum in Golmud, northwest China's Qinghai Province, March 15, 2013. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
Photo taken on March 15, 2013 shows the scenery of the Qarhan salt lake in Golmud, northwest China's Qinghai Province. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)
Photo taken on March 15, 2013 shows the scenery of the Qarhan salt lake in Golmud, northwest China's Qinghai Province. The Qarhan salt lake, with a total area of 5,856 square kilometers, is the largest salt lake in China. The lake's abundant deposit of halide salts makes it a major mineral center. (Xinhua/Wu Gang)