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Zhang Zi (2nd, R) guides Wang Lei as they patrol at Shijiazhuang Railway Station in north China's Hebei Province, on Feb. 23, 2019. During this year's Spring Festival travel rush, Zhang Zi, a 32-year-old railway police officer, has been working together with her apprentice Wang Lei, a 24-year-old officer. They have been busy helping passengers, handling emergencies and maintaining order at the Shijiazhuang Railway Station. This is the pair's second time to work together during the Spring Festival travel rush. (Xinhua/Mu Yu)
