A woman poses for photos after a snowfall hit Liuhu Park in Pingliang City, northwest China's Gansu Province, Feb. 21, 2017. A cold front brought snowfall to many parts of north China. (Xinhua/Yang Xin)
A woman poses for photos after a snowfall hit Liuhu Park in Pingliang City, northwest China's Gansu Province, Feb. 21, 2017. A cold front brought snowfall to many parts of north China. (Xinhua/Yang Xin)