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
A woman pays by her phone at a self-service grocery store with no cashier in Guye District of Tangshan, north China's Hebei Province, June 14, 2018. (Xinhua/Yang Shiyao)
A woman pays by her phone at a self-service grocery store with no cashier in Guye District of Tangshan, north China's Hebei Province, June 14, 2018. (Xinhua/Yang Shiyao)