Photo taken on Oct. 14, 2016 shows a highway winding across mountains in Wanmao Village of Du'an Yao Autonomous County, south China's Guangxi Zhuang Autonomous Region. Building roads has become a priority in poverty alleviation efforts in the mountainous county. Now over 1,700-km highway have been built to link those poverty-stricken villages in remote mountains. (Xinhua/Lu Bo'an)