Aerial photo taken on April 24, 2021 shows snow-covered mountains in Qilian County, northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Fei Maohua)

Aerial photo taken on April 24, 2021 shows snow-covered mountains in Qilian County, northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on April 24, 2021 shows snow-covered pasture in Qilian County, northwest China's Qinghai Province. (Xinhua/Fei Maohua)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Flocks of sheep graze on the snow-covered pasture in Qilian County, northwest China's Qinghai Province, April 24, 2021. (Xinhua/Wu Gang)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Fei Maohua)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on April 24, 2021 shows snow-covered mountains in Qilian County, northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Fei Maohua)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Fei Maohua)

Photo taken on April 24, 2021 shows the snow scenery in Qilian County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on April 24, 2021 shows snow-covered mountains in Qilian County, northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

来源：Xinhua