The whole region is made up of two kinds of terrains: plateau above the dam and mountainous region below the dam. And the climatic differences are thus quite obvious. It is cold in winter, dry in spring, rainy in summer and cool in autumn. The average temperature is about 9C. The best time for going to the plateau above the dam is during July and August. At the very time, flowers are here and there, its cool and foggy.

While the time from the beginning of September to the beginning of October is most suitable for visitng the Mulan Paddock and appreciating the spectacular scenery in late autumn, with a mountain of red maple leaves, as if everything in the mountain has been dyed.