Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 15, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 15, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Sunshine lightens the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)

Tourists appreciate the scenery of the Meili Snow Mountain in Deqin County of Deqen Tibetan Autonomous Prefecture, southwest China's Yunnan Province, Oct. 16, 2015. The Meili Snow Mountain, with the highest peak Kawagebo at an altitude of 6,740 meters, is covered with glaciers formed thousands of years ago. (Xinhua/Lin Yiguang)