Video PlayerClose
Children visit the Yangzhou Science and Technology Museum during summer vacation in Yangzhou, east China's Jiangsu Province, July 29, 2018. (Xinhua/Meng Delong)?
Children visit the Yangzhou Science and Technology Museum during summer vacation in Yangzhou, east China's Jiangsu Province, July 29, 2018. (Xinhua/Meng Delong)?