Mu Qiaohan (1st L), Jiao Wan (2nd L) and Abudumijit Emet (1st R) visit in a student's home in Xiji County, northwest China's Ningxia Hui Autonomous Region, April 24, 2019. A volunteer teaching team made of postgraduates from Fudan University has been consecutively offering teaching service in Xiji County since 1999. A total of 224 teachers have offered teaching service in 9 local middle schools and helped to promote education in Xiji County. (Xinhua/Lu Ying)