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Workers are seen at the construction site of the Wufengshan Yangtze River Bridge in Zhenjiang, east China's Jiangsu Province, May 10, 2019. (Xinhua/Li Xiang)

Workers are seen at the construction site of the Wufengshan Yangtze River Bridge in Zhenjiang, east China's Jiangsu Province, May 10, 2019. (Xinhua/Li Xiang)