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Advanced techs at Int'l Big Data Expo in Guizhou appeal to visitors (5)

(Ecns.cn) 10:46, May 28, 2021

A visitor lies on a smart monitor to receive health data on sleep state at the 2021 China International Big Data Expo, May 27, 2021. (China News Service/Qu Honglun)


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(Web editor: Guo Wenrui, Liang Jun)

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