Students clean new black board in the newly-built building at Yudong primary school in Longfu Township of Du'an Yao Autonomous County, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2016. Guangxi plans to further improve the education quality in poverty-stricken areas during China's Thirteenth Five-Year Plan (2016-2020). (Xinhua/Huang Xiaobang)
