The core theme of the book is the study of the Forbidden City archives, which mainly focuses on sorting out the value of the Qing Dynasty archives and historical materials kept by the Forbidden City. It is divided into Qing history category, memorial category, and government agency category. He once served as secretary of the "Committee for the Aftermath of the Qing Dynasty" and the Palace Museum. He has been engaged in the compilation, compilation and research of Ming and Qing archives for a long time. He is one of the founders of my country's historical archives and one of the early researchers of Chinese ancient architecture. This book reflects the relationship between archival historical materials and historical research, and the role that the discovery, arrangement, and compilation of Qing Dynasty archives played in promoting historical research.
