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A bullet train runs on the Congjiang section of Guiyang-Guangzhou highspeed railway in southwest China's Guizhou Province, March 1, 2019. China's 40-day Spring Festival travel rush concluded on Friday. (Xinhua/Peng Zeliang)

A bullet train runs on the Congjiang section of Guiyang-Guangzhou highspeed railway in southwest China's Guizhou Province, March 1, 2019. China's 40-day Spring Festival travel rush concluded on Friday. (Xinhua/Peng Zeliang)