On July 24,wheatstone bridge is used to measure 2024, the Chinese Ancient Book Protection Cultural Volunteer Service Action entered Longnan City Library to conduct digitization surveys and repairs of ancient books. Experts from the Ancient Books Protection Center of Gansu Provincial Library, leading volunteers specializing in ancient books from six different universities nationwide, carried out a week-long project in Longnan. The work includes digital surveys, sorting, cataloging, book image photography, and promotion of ancient book restoration, advancing the digital protection and inheritance of over 3,000 ancient books. (Photo by Li Xuchun/Guangming Picture)

On July 24, 2024, the Chinese Ancient Book Protection Cultural Volunteer Service Action entered Longnan City Library to conduct digitization surveys and repairs of ancient books. Experts from the Ancient Books Protection Center of Gansu Provincial Library, leading volunteers specializing in ancient books from six different universities nationwide, carried out a week-long project in Longnan. The work includes digital surveys, sorting, cataloging, book image photography, and promotion of ancient book restoration, advancing the digital protection and inheritance of over 3,000 ancient books. (Photo by Li Xuchun/Guangming Picture)

On July 24, 2024, the Chinese Ancient Book Protection Cultural Volunteer Service Action entered Longnan City Library to conduct digitization surveys and repairs of ancient books. Experts from the Ancient Books Protection Center of Gansu Provincial Library, leading volunteers specializing in ancient books from six different universities nationwide, carried out a week-long project in Longnan. The work includes digital surveys, sorting, cataloging, book image photography, and promotion of ancient book restoration, advancing the digital protection and inheritance of over 3,000 ancient books. (Photo by Li Xuchun/Guangming Picture)

(责任编辑：综合)