Witnessing original speed of 35 kilometers per hour up to 350 today, the Beijing-Zhangjiakou railway, the first designed and built by Chinese, shows the development of the country's railways and economy.
Xinhua丨Updated: May 23, 2019
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Photo taken on Oct. 18, 2018 shows Qinglongqiao Station of the Beijing-Zhangjiakou railway in Yanqing District, Beijing, capital of China. [Photo/Xinhua]