After two years of offline activities were suspended due to the impact of the COVID-19, this year's Hannover Industrial Expo resumed offline. Hydrogen powered aircraft, exoskeleton technology, intelligent manipulator and other cutting-edge products are particularly attractive. (this is a hydrogen powered aircraft shot at the Hannover Industrial Fair in Germany on May 30.) (on May 30, at the Hannover Industrial Exposition in Germany, an intelligent robot interacted with the audience. The intelligent robot can sense the gestures of people in a certain space and make the same gestures.) (on May 30, at the Hannover Industrial Fair in Germany, people were attracted by an intelligent robot dog.) (on May 30, at the Hannover Industrial Fair in Germany, the Exhibitor (right) introduced an intelligent linear robot to the audience.) (on May 30, at the Hannover Industrial Fair in Germany, an intelligent manipulator was demonstrated to inject glue into the sole.) (Xinhua News Agency)