A Unitree humanoid robot interacts with children at the Wuzhen Youth Tech Carnival in Wuzhen, east China's Zhejiang province, on Aug. 17, 2025. The first Wuzhen Youth Tech Carnival is held from Aug. 15 to 25 in Wuzhen of Tongxiang City. This 11-day technology event, bringing together more than 40,000 young technology enthusiasts from all over the world, builds up a comprehensive platform for teenagers to show wisdom, boost innovation and touch the future. (Xinhua/Xu Yu)