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Robotic arms play a piano during the 2019 Smart China Expo in southwest China's Chongqing Municipality, Aug. 27, 2019. The 2019 Smart China Expo kicked off Monday in Chongqing. (Xinhua/Tang Yi)
Highlights of Smart China Expo in Chongqing
Source: Xinhua| 2019-08-27 20:24:40|Editor: Li Xia
