Photo taken on March 21, 2019 shows the snow scenery on Pamir Plateau, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Sadat)

Photo taken on March 21, 2019 shows a herd of yaks on the snow-covered Pamir Plateau, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Sadat)

Photo taken on March 21, 2019 shows the snow scenery on Pamir Plateau, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Sadat)

Photo taken on March 21, 2019 shows the snow scenery on Pamir Plateau, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Sadat)

Photo taken on March 21, 2019 shows a herd of yaks on the snow-covered Pamir Plateau, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Sadat)