ZHENGZHOU, July 15, 2016 -- The panel of Chinese bullet train "Dolphin Blue" shows a speed of 420 kilometers per hour as it runs on the line between Zhengzhou in central China's Henan Province and Xuzhou in the east China's Jiangsu Province, July 15, 2016. Two Chinese trains "Golden Phoenix" and "Dolphin Blue" dashing at world-record 420 km per hour in opposite directions passed each other on parallel tracks on Friday, in the latest feat achieved by China in high-speed rail. (Xinhua/Zhu Xiang)
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