On November 15, the 24th China International Hi tech Fair was opened in Shenzhen. The 5-day exhibition period of this High tech Fair attracted more than 5600 exhibitors and 8600 projects from more than 40 countries and regions. Mao Siqian, a reporter from Xinhua News Agency, photographed the scene of the 24th China International Hi tech Fair on November 15. On November 15, at the 24th China International Hi tech Fair, a hand brewed coffee robot was showing how to brew coffee. On November 15, at the 24th China International Hi tech Fair, visitors learned about an intelligent photovoltaic cleaning robot. On November 15, at the 24th China International Hi tech Fair, visitors experienced AI "face changing" at the booth. On November 15, at the 24th China International Hi tech Fair, a robot dog from a company in Hangzhou was demonstrating its performance. On November 15, at the 24th China International Hi tech Fair, the staff of a science and technology company demonstrated the optical motion capture technology. (Liu Xinshe)