Light of Internet Expo opens in Wuzhen, east China's Zhejiang

A smart city system is displayed during the Light of Internet Expo in Wuzhen, east China's Zhejiang Province, Oct. 18, 2019. As part of the 6th World Internet Conference, the Light of Internet Expo opened Friday in Wuzhen, attracting over 600 relative companies and organizations. (Xinhua/Xu Yu)