Left-behind children perform shadow play under the guidance of Zhang Xinguo, a shadow play artist, in Handan City, north China's Hebei Province, July 26, 2017. Shadow play is China's intangible cultural heritage. The Jiudian Primary School of Feixiang District in Handan City offered a shadow play lesson for free, which enriches the summer vacation life of kids.(Xinhua/Mu Yu)
