KUNMING, April 20, 2016 (Xinhua) -- People walk on the newly-opened Longjiang grand bridge in southwest China's Yunnan Province, April 20, 2016. The Longjiang grand bridge on Baoshan-Tengchong highway, with a length of over 2,470 meters and a height of 280 meters, has the longest span among all the steel box girder suspension bridges in mountainous areas in Asia. (Xinhua/Liu Zhengfan)
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