An empty train keeps passengers safe
chinadaily.com.cn | 2017-01-20 13:22
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Wang Yongji monitors the inspection tester on the train as it travels on the Shen-Dan railway line in Northeast Chian's Liaoning province, Jan 13, 2017. Wang's job is to detect any hidden dangers and collect the train's running data during the trip. [Photo/IC]
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