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Workers supervise railway information at an office at night in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Jan. 30, 2018. (Xinhua/Zhou Hua)
Workers supervise railway information at an office at night in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Jan. 30, 2018. (Xinhua/Zhou Hua)