Photo taken on May 21, 2016 shows the sunset on the Barkol Lake after snow in Hami of northwest China's Xinjiang Uygur Autonomous Region. Photo: Xinhua

Photo taken on May 22, 2016 shows the pine trees covered with snow in Hami of northwest China's Xinjiang Uygur Autonomous Region. Photo: Xinhua

Photo taken on May 21, 2016 shows the snow scenery of the Barkol grassland in Hami of northwest China's Xinjiang Uygur Autonomous Region. Photo: Xinhua

Sheep walk on a grassland covered with snow in Hami of northwest China's Xinjiang Uygur Autonomous Region, May 22, 2016. Photo: Xinhua

Photo taken on May 21, 2016 shows the snow scenery of the east Tianshan Mountain in Hami of northwest China's Xinjiang Uygur Autonomous Region. Photo: Xinhua

Photo taken on May 21, 2016 shows the snow scenery of the east Tianshan Mountain in Hami of northwest China's Xinjiang Uygur Autonomous Region. Photo: Xinhua

Sheep search for food on a grassland covered with snow in Hami of northwest China's Xinjiang Uygur Autonomous Region, May 22, 2016. Photo: Xinhua