Photo taken on Nov. 10, 2017 shows a national wetland park in Taxkorgan Tajik Autonomous County, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Hu Huhu)

Photo taken on Nov. 13, 2017 shows the glacier on the Mount Muztagata on Pamirs Plateau, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Jiang Wenyao)

Photo taken on Nov. 13, 2017 shows the Baisha Lake in Akto County, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Shen Bohan)

Photo taken on Nov. 13, 2017 shows the glacier on the Mount Muztagata on Pamirs Plateau, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Hu Huhu)

Combined photo taken on Nov. 13, 2017 shows the Baisha Lake in Akto County, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Jiang Wenyao)

Aerial photo taken on Nov. 13, 2017 shows the glacier on the Mount Muztagata on Pamirs Plateau, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Shen Bohan)

Photo taken on Nov. 11, 2017 shows the national highway 314 close to Khunjerab, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Hu Huhu)

Photo taken on Nov. 10, 2017 shows the relics of a stone city in Taxkorgan Tajik Autonomous County, northwest China's Xinjiang Uygur Autonomous Region. Pamir Plateau was once a busy passage used by traders traveling along the ancient Silk Road. (Xinhua/Jiang Wenyao)