Combo photo taken on March 3, 2016 (up) and Sept. 3, 2012 shows children on their way to school at Nongyong Village of Dahua Yao Autonomous County, south China's Guangxi Zhuang Autonomous Region. Building roads has become a priority in poverty alleviation efforts in the mountainous county. Local authority planned to build over 400 rural roads in next two years to link those poverty-stricken villages in remote mountains. (Xinhua/Huang Xiaobang)