Wang Xuan (center), a representative of Chinese victims of Japan's germ warfare during the War of Resistance against Japanese Aggression (1931-45), donates 11,378 precious archival items to an exhibition hall in Jinhua, East China's Zhejiang Province on June 7, 2023. Many of the donated items are first-hand original investigation materials with high historical value, including tapes, disks, research books and overseas documents. Photo: VCG