Qinghai Emerald Lake. Great beautiful Qinghai, beautiful Emerald Lake. Hidden in the depths of Qinghai, the Dachaidan Emerald Lake is green and crystal clear, as if God set a huge emerald on the Qinghai-Tibet Plateau, like a fairyland and beautiful. In fact, "emerald lake" is also a salt lake, a lake water is formed by mining, with the depth of different lake colors from light green, emerald green and deep blue glow alternate, wonderful, locals call "emerald lake".