A shepherd herds sheep at the Barkol Grassland in Hami, northwest China's Xinjiang Uygur Autonomous Region, Sept. 22, 2013. The Barkol Grassland saw this autumn's first snow on Saturday. (Xinhua/Zhang Jiangang)

A shepherd herds sheep at the Barkol Grassland in Hami, northwest China's Xinjiang Uygur Autonomous Region, Sept. 22, 2013. The Barkol Grassland saw this autumn's first snow on Saturday. (Xinhua/Zhang Jiangang)

Sheep browse at the Barkol Grassland in Hami, northwest China's Xinjiang Uygur Autonomous Region, Sept. 22, 2013. The Barkol Grassland saw this autumn's first snow on Saturday. (Xinhua/Zhang Jiangang)

Snow-covered wheat fields are seen at the Barkol Grassland in Hami, northwest China's Xinjiang Uygur Autonomous Region, Sept. 22, 2013. The Barkol Grassland saw this autumn's first snow on Saturday. (Xinhua/Zhang Jiangang)

Vehicles are seen on the snow-covered S303 Highway at the Barkol Grassland in Hami, northwest China's Xinjiang Uygur Autonomous Region, Sept. 22, 2013. The Barkol Grassland saw this autumn's first snow on Saturday. (Xinhua/Zhang Jiangang)