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A resident scans QR code by a phone to enter a self-service grocery store with no cashier in Guye District of Tangshan, north China's Hebei Province, June 14, 2018. (Xinhua/Yang Shiyao)
In pics: self-service grocery store in China's Hebei
Source: Xinhua| 2018-06-15 22:33:39|Editor: ZX
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