Photo taken on Dec. 9, 2018 shows the construction site of a railway arch bridge across the Nujiang River in southwest China's Yunnan Province. With a grand arch bridge erected on Monday morning, Chinese constructors have built the longest-spanning railway arch bridge with a single span of 490 meters. (Xinhua)??
Weekly choices of Xinhua photo
Source: Xinhua| 2018-12-16 16:23:45|Editor: Shi Yinglun
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