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Gerry Pennell, chief information and technology officer of International Olympic Committee, speaks at the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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Alibaba Chairman Jack Ma speaks during the opening ceremony of the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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People attend the opening ceremony of the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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Visitors try self-ordering service at a "restaurant of the future" booth at the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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Guests visit the booths at the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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A visitor tries a face-detecting system that authorizes payments at a booth at the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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Visitors try an AR photo booth at the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)

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Alibaba Chairman Jack Ma speaks during the opening ceremony of the Computing Conference 2017 in Hangzhou, capital of east China's Zhejiang Province, Oct. 11, 2017. The four-day conference kicked off here on Wednesday, attracting guests from 67 countries and regions. (Xinhua/Huang Zongzhi)