Young volunteers write to kids living in remote poverty-stricken mountainous areas at Zhanqiao Bookstore in Qingdao, east China's Shandong, June 29, 2019. More than 30 kids were trained as volunteers in Zhanqiao Bookstore. During the summer vacation, they will be engaged in readers guidance, books sorting, public welfare activities and other work within their capacity. In return, they are granted priority in borrowing books, with some given to them as gifts. (Xinhua/Li Ziheng)