The 1,940 square-meter Namtso Lake is China's highest salt lake at over 4,700 meters above sea level. Tibetans consider it to be a sacred lake. Every year, thousands of disciples come to the lake for a pilgrimage. The best time to visit Namtso Lake is from May to October, and every May and June in the Tibetan calendar (July 21 to September 22), disciples of the Tibetan Buddhism come to the lake to pray.[Photo: Global Times]