Photo taken on Dec. 10, 2015 shows a herdsman working on snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows a herdsman's house surrounded by snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows a vehicle running on snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

A herdsman herd sheep in snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region, Dec. 10, 2015. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows sheep foraging for food in snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows a herdsman's house surrounded by snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Herdsman Gangbuhe feeds sheep in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region, Dec. 10, 2015. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows a herdsman's house surrounded by snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows sheep foraging for food in snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Photo taken on Dec. 10, 2015 shows sheep foraging for food in snow in Mingantu Township, Zhengxiangbai Banner, Xilingol League, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Ren Junchuan)

Aerial photo taken on Dec. 10, 2015 shows the snow-covered Xilingol League Grassland, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Lian Zhen)

Aerial photo taken on Dec. 10, 2015 shows the snow-covered Xilingol League Grassland, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Lian Zhen)

Aerial photo taken on Dec. 10, 2015 shows the snow-covered Xilingol League Grassland, north China's Inner Mongolia Autonomous Region. Xilingol League has witnessed six wide range snowfalls since November, with more than 90 percent of area being covered by snow. (Xinhua/Lian Zhen)