A staff member (R) displays a robot for fire fighting and detection at the Smart China Expo in Chongqing, southwest China, Aug. 23, 2021. The Smart China Expo 2021 opened in Chongqing on Monday, with more than 600 enterprises participating in the exhibition online and offline.(Photo: Xinhua)
Visitors experience VR devices at the Smart China Expo in Chongqing, southwest China, Aug. 23, 2021. The Smart China Expo 2021 opened in Chongqing on Monday, with more than 600 enterprises participating in the exhibition online and offline. (Photo: Xinhua)
Visitors experience MR techolologies at the Smart China Expo in Chongqing, southwest China, Aug. 23, 2021. The Smart China Expo 2021 opened in Chongqing on Monday, with more than 600 enterprises participating in the exhibition online and offline.(Photo: Xinhua)
Visitors tour the China Railway exhibition booth at the Smart China Expo in Chongqing, southwest China, Aug. 23, 2021. The Smart China Expo 2021 opened in Chongqing on Monday, with more than 600 enterprises participating in the exhibition online and offline.(Photo: Xinhua)