Chemical and biological methods help restore ancient books in north China
(Xinhua) 08:38, April 24, 2024 Gao Xuemiao binds a restored ancient book at Tianjin Library in north China's Tianjin Municipality, April 22, 2024. (Xinhua/Sun Fanyue) TIANJIN, April 23 (Xinhua) -- Tianjin Library is home to a collection of 590,000 …