Photo taken on July 27, 2017 shows a road in Longwan Township of Du'an Yao Autonomous County, south China's Guangxi Zhuang Autonomous Region. The road mileage has expanded to nearly 2,000 kilometers from 70 kilomiters in the past 60 years in the county of which 89 percent is coverd by stony mountains. (Xinhua/Lu Bo'an)