9th China Smart City and Intelligent Economy Expo opens in Ningbo

Visitors look at a robot playing chess at the 9th China Smart City and Intelligent Economy Expo in Ningbo, east China's Zhejiang Province, Sept. 6, 2019. Unveiled here on Friday, the 9th China Smart City and Intelligent Economy Expo showcases latest products and technologies in the area. (Xinhua/Xu Yu)