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People visit exhibition room of Alibaba, a part of the Smart China Expo, in Chongqing, Southwest China, Aug 25, 2019. The Smart China Expo (SCE) is held from Aug 26 to 29 in Chongqing International Expo Center. With the theme of "Smart Technology: Empowering Economy, Enriching Life", SCE 2019 will focus on a series of events including conferences, exhibitions, contests and forums. [Photo by Wang Quanchao/Xinhua]

People visit exhibition room of Alibaba, a part of the Smart China Expo, in Chongqing, Southwest China, Aug 25, 2019. The Smart China Expo (SCE) is held from Aug 26 to 29 in Chongqing International Expo Center. With the theme of "Smart Technology: Empowering Economy, Enriching Life", SCE 2019 will focus on a series of events including conferences, exhibitions, contests and forums. [Photo by Wang Quanchao/Xinhua]

People visit the Smart China Expo in Chongqing, Southwest China, Aug 25, 2019. The Smart China Expo (SCE) is held from Aug 26 to 29 in Chongqing International Expo Center. With the theme of "Smart Technology: Empowering Economy, Enriching Life", SCE 2019 will focus on a series of events including conferences, exhibitions, contests and forums. [Photo by Wang Quanchao/Xinhua]