Journalists visit the command center of Beijing's subway in Beijing, capital of China, Oct. 20, 2017. Chinese and foreign journalists visited the command center of Beijing's subway and subway Yanfang line in Beijing on Friday. (Xinhua/Xing Guangli)
Chinese, foreign journalists visit command center of Beijing's subway
Source: Xinhua| 2017-10-21 18:23:43|Editor: Yang Yi
