LIJIANG, China -- After photographing Black Dragon Lake here for eight years, He Jiaxin knows of more places where he can get the lake to mirror the majesty of its surrounding mountains than anyone else. But this year, he has a problem: The lake has disappeared. Since its springs dried up last year, no water has flowed into Black Dragon Lake for more than 400 days. At the same time, hot weather caused a high evaporation rate, turning a large part of the lake into a play yard for children. Similar situations are happening across other parts of Yunnan province, which usually has more rain than half of China's regions.