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Attendants of China Railway Chengdu Group Co., Ltd. receive etiquette training to prepare for the country's annual Spring Festival travel rush in southwest China's Chongqing, Jan. 8, 2019. (Xinhua/Su Zhigang)
Attendants of China Railway Chengdu Group Co., Ltd. receive etiquette training to prepare for the country's annual Spring Festival travel rush in southwest China's Chongqing, Jan. 8, 2019. (Xinhua/Su Zhigang)