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A visitor experiences instant dress changing technique 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
