Subway trains of Yanfang Line are seen in a maintenance garage in Beijing, capital of China, June 15, 2017. The Yanfang Line of Beijing Subway will be operational by the end of 2017 with fully autopilot system. (Xinhua/Zhang Chenlin)
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Subway trains of Yanfang Line are seen in a maintenance garage in Beijing, capital of China, June 15, 2017. The Yanfang Line of Beijing Subway will be operational by the end of 2017 with fully autopilot system. (Xinhua/Zhang Chenlin)
