A man take photos on the Sejila Mountain in Nyingchi Prefecture, southwest China's Tibet Autonomous Region, Dec. 19, 2015. [Photo/Xinhua]

A car rides on the Sejila Mountain in Nyingchi Prefecture, southwest China's Tibet Autonomous Region, Dec. 19, 2015. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows the Mount Namcha Barwa in clouds in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows Mount Namcha Barwa in clouds in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Vehicles stop on the Sejila Mountain in Nyingchi Prefecture, southwest China's Tibet Autonomous Region, Dec. 19, 2015. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows the Mount Namcha Barwa in sunset in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows the scenery on the Sejila Mountain in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows the Mount Namcha Barwa in sunset in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Photo taken on Dec. 19, 2015 shows the scenery seen on the Sejila Mountain in Nyingchi Prefecture, southwest China's Tibet Autonomous Region. [Photo/Xinhua]

Editor: Lily Li