Passengers wait for their train at Chongwenmen Station on Line 2 of the subway in Beijing, capital of China, Aug. 20, 2017. By Sunday, all stations on Line 2 of Beijing Subway are enabled with safety doors. (Xinhua/Liu Xianguo)
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Passengers wait for their train at Chongwenmen Station on Line 2 of the subway in Beijing, capital of China, Aug. 20, 2017. By Sunday, all stations on Line 2 of Beijing Subway are enabled with safety doors. (Xinhua/Liu Xianguo)
