From the plateau to the plain, and from winter to summer, I ran five kilometers in Zhangye, but I didn't run for three weeks, and my speed was greatly reduced. The colorful Danxia in Zhangye, Gansu Province, although the colors are not as bright as those seen in the previous photos, it is still shocking at first glance. The mountain peaks here change with time and weather, and the color scenery is constantly changing…