Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)

Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)

Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)

Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)

Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)