A child interacts with a robot at the booth of Chongqing Huashu Robotics Co. Ltd. during the Smart China Expo 2023 in Southwest China’s Chongqing Municipality on Monday. The three-day expo opened at Chongqing International Expo Center on Monday, attracting over 500 exhibitors from home and abroad to display their cutting-edge technologies, products, and applications in smart industries and the digital economy.  Xinhua