Photo taken on Aug. 2, 2018 shows some of the tools used for ancient book restoration in Shijiazhuang, capital of north China's Hebei Province. Gao Huiyun is a teacher of cultural relics restoration and protection at Hebei Vocational Art College. Gao has restored over 1,000 ancient books in her 13-year career time. (Xinhua/Chen Qibao)