Chinese bullet trains cross in world first (8)

ZHENGZHOU, July 15, 2016 -- Technicians work on Chinese bullet train "Dolphin Blue" dashing on the high-speed rail 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)