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People try out 5G smart cars at the China International Digital Economy Expo (CIDEE) in Shijiazhuang, north China's Hebei Province, Oct. 11, 2019. (Xinhua/Wang Xiao)

People try out 5G smart cars at the China International Digital Economy Expo (CIDEE) in Shijiazhuang, north China's Hebei Province, Oct. 11, 2019. (Xinhua/Wang Xiao)