Visitors view the frozen Hukou Waterfall on the Yellow River, which is located on the border area between north China's Shanxi and northwest China's Shaanxi provinces, Jan. 14, 2017. (Xinhua/Lyu Guiming)
Visitors view the frozen Hukou Waterfall on the Yellow River, which is located on the border area between north China's Shanxi and northwest China's Shaanxi provinces, Jan. 14, 2017. (Xinhua/Lyu Guiming)