Annual spring flood seen in Hukou Waterfall scenic spot

Photo taken on March 21, 2018 shows the Hukou Waterfall scenic spot on the Yellow River, which is located on the border area between north China's Shanxi and northwest China's Shaanxi provinces. Warmer temperature and melting ice in upper reaches lead to the annual spring flood of the waterfall. (Xinhua/Rao Beicheng)