Photo taken on Nov. 24, 2015 shows the snow scenery of Pingyao Ancient City, north China's Shanxi Province. Founded in the 14th century, the Ancient City of Pingyao is an exceptionally well-preserved example of a traditional Han Chinese City, which was named a World Heritage Site by UNESCO in 1997. (Xinhua/Liang Shengren)
Snow and frost cover a face of a soldier during a training in Beiji Village of Mohe City, China's northernmost village in northeast China's Heilongjiang Province, Nov. 23, 2015. Soldiers here still stick to daily training even though the temperature here is freezing cold. (Xinhua/Chu Fuchao)
Photo taken on Nov. 25, 2015 shows the mist-shrouded Lushan Mountain scenic resort in Jiujiang, southeast China's Jiangxi Province. Cold waves swept across a vast area of China since last Sunday.(Xinhua/Hu Guolin)
Tourists visit the crescent spring of the Mingsha Hill in Dunhuang, northwest China's Gansu Province, Nov. 24, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Zhang Xiaoliang)
Photo taken on Nov. 25, 2015 shows an aerial view of the Quancheng Park in Jinan City, east China's Shandong Province. Jinan greeted the first snow of this winter on Tuesday. (Xinhua/Zhu Jinming)
Students play table tennis in snow at a middle school in Wushe County, central China's Henan Province, Nov. 24, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Feng Xiaomin)
Photo taken on Nov. 24, 2015 shows fruits covered by snow at a park in Yiyuan County, east China's Shandong Province. Yiyuan greeted a snow on Tuesday. (Xinhua/Zhao Dongshan)
Photo taken on Nov. 25, 2015 shows houses covered by snow in Yantai, east China's Shandong Province. Yantai greeted the first snow of this winter on Wednesday. (Xinhua/Chu Yang)
Two black swans and three little swans are seen swimming in lake in the "Old Summer Palace", also known as "Yuanmingyuan", in Beijing, capital of China, Nov. 22, 2015. Heavy snowfall hit a vast area of north China on Sunday, disrupting traffic in Beijing, Tianjin and Inner Mongolia Autonomous Region. (Xinhua/Li Mingfang)
Footprints are seen on a snow-covered road at a park in Jinan, capital of east China's Shandong Province, Nov. 25, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Zhao Xiaoming) 10
Workers clear snow on the railway in Houma City, north China's Shanxi Province, Nov. 24, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Bao Dongsheng) 11
Leaves are frozen in water after a snowfall in Jinan, capital of east China's Shandong Province, Nov. 25, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Zhao Xiaoming) 12
Tourists visit the Tiantan Park in Beijing, capital of China, Nov. 22, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Li Wen) 13
A pedistrian walks in snow weather in Zhengzhou, capital of central China's Henan Province, Nov. 24, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Wang Song) 14
Photo taken on Nov. 23, 2015 shows the scenery of Huangyaguan section of the Great Wall after a snowfall in Tianjin, north China. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Yang Yanbo) 15
Tourists visit the crescent spring of the Mingsha Hill in Dunhuang, northwest China's Gansu Province, Nov. 24, 2015. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Zhang Xiaoliang) 16
Photo taken on Nov. 26, 2015 shows patterns formed by frost on a window in Yiyuan County, east China's Shandong Province. Cold waves swept across a vast area of China since last Sunday. (Xinhua/Zhao Dongshan) 17