Combo photo shows a model of Fengyu Bridge displayed at Anthropology Museum of Guangxi in Nanning, south China's Guangxi Zhuang Autonomous Region, May 18, 2019 (above), and a photo taken on Dec. 7, 2016 showing Fengyu Bridge at Sanjiang Dong Autonomous County in Liuzhou, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)