Student volunteers work in library during summer vacation in Langfang

Student volunteers sort books under the guidance of a staff member at the library of Xianghe County, Langfang, north China's Hebei Province, Aug. 3, 2019. Parents in Xianghe brought their children to experience the work of volunteers in the library during their summer vacation, helping them enjoy convenient reading there and culitivate their practical ability during the summer vacation. (Xinhua/Lu Peng)