"Echoes in the Filing Cabinet" is a novel that combines suspense, history and emotion. Starting from a group photo of the Republic of China in the Municipal Archives, the secret history of the opera troupe in 1948 and the Binjiang Road cultural relics corruption case in 2023 are connected in series. Archivist Zhou Mingyuan discovers a strange connection between the woman in the photo and "Lin Manqi", and becomes involved in an identity mystery, a fight for cultural relics, and a cross-generational conspiracy. The perseverance of the impostor, the blood of the victims, and the struggle of those in power are intertwined in the clues of cultural relics such as the golden mask. The work uses "archives" as a link between time and space to reveal the secrets of four generations' protection of historical memories, interpret the deep proposition that "cultural relics are memory containers", and write about the power of justice and inheritance in suspenseful tracking.