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A resident visits a decommissioned train car served as a small supermarket at a residential community in Xi'an, capital of northwest China's Shaanxi Province, June 13, 2018. (Xinhua/Shao Rui)

A resident visits a decommissioned train car served as a small supermarket at a residential community in Xi'an, capital of northwest China's Shaanxi Province, June 13, 2018. (Xinhua/Shao Rui)