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'Doctor Huang' conducts progressive speed trial for Guiyang-Nanning railway

chinadaily.com.cn | Updated: 2023-05-17 11:24
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This photo taken by a drone shows the high-speed comprehensive test train on the Chengjiang Bridge in Du'an county, Hechi city, Guangxi Zhuang autonomous region on May 16, 2023. [Photo/Xinhua]
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