Photo taken on Feb. 15, 2021 shows the snow-covered scenery in Medog County, Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)
Aerial photo taken on Feb. 8, 2021 shows a curve of the Yarlung Zangbo River in Medog County, Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)
Aerial photo taken on Feb. 8, 2021 shows a curve of the Yarlung Zangbo River in Medog County, Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)
Aerial photo taken on Feb. 13, 2021 shows the view of Yarlung Zangbo River and Medog County in Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)
Aerial photo taken on Feb. 13, 2021 shows the view of Yarlung Zangbo River and Medog County in Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)
Aerial photo taken on Feb. 8, 2021 shows the entrance of Galongla Tunnel in Medog County, Nyingchi City of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)