Zhang Qi, a restorer of ancient books in the library of Jilin University, observes the damage of the pages of an ancient book ahead of restoration at the library of Jilin University in Changchun, northeast China's Jilin Province, April 19, 2024. (Xinhua/Xu Chang)
Zhang Qi, a restorer of ancient books in the library of Jilin University, mends the pages of an ancient book at the library of Jilin University in Changchun, northeast China's Jilin Province, April 19, 2024. (Xinhua/Xu Chang)
Zhang Hua, a restorer of ancient books in the library of Jilin University, prepares for the restoration of an ancient book at the library of Jilin University in Changchun, northeast China's Jilin Province, April 19, 2024. (Xinhua/Xu Chang)
Zhang Hua, a restorer of ancient books in the library of Jilin University, works on the restoration of an ancient book at the library of Jilin University in Changchun, northeast China's Jilin Province, April 19, 2024.