The hot spring valley on the north slope of the Changbai Mountains in Yanbian Korean autonomous prefecture, Northeast China's Jilin province [Photo/CFP]

Steam rises from a hot spring in the valley in the Changbai Mountains. [Photo/CFP]

Steam rises from hot springs in the valley in the Changbai Mountains. [Photo/CFP]

Winter scenery at the Changbai Mountains [Photo/CFP]