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Passengers walk to board trains at Hechuan Station in southwest China's Chongqing, Jan. 5, 2019. China updated the country's train diagram on Saturday. (Xinhua/Wang Quanchao)
Passengers walk to board trains at Hechuan Station in southwest China's Chongqing, Jan. 5, 2019. China updated the country's train diagram on Saturday. (Xinhua/Wang Quanchao)