A child visits a science exhibition at a community in Qiaoxi District of Shijiazhuang City, capital of north China's Hebei Province, Aug. 3, 2016. (Xinhua/Wang Xiao)
A child visits a science exhibition at a community in Qiaoxi District of Shijiazhuang City, capital of north China's Hebei Province, Aug. 3, 2016. (Xinhua/Wang Xiao)