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A bullet train runs on Chongqing-Guiyang railway in Zunyi, southwest China's Guizhou Province, Jan. 12, 2018. A railway connecting two major cities in southwest China, Chongqing and Guiyang is under trial run. Designed for passenger trains running at a speed of 200 kilometers per hour, the railway will improve traffic between China's southwest and northwestern, eastern, southern areas. (Xinhua/Han Ye)
