Shadow play artist Zhang Yingfeng explains knowledge of shadow play for left-behind children, 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 started a shadow play lesson for free, which enriches the summer vacation life of kids. (Xinhua/Mu Yu)
