A Dictionary of Common Knowledge in Ancient Chinese Culture is a medium-sized reference book designed to introduce basic knowledge of ancient Chinese culture to teachers and students in primary and secondary schools, as well as enthusiasts of ancient Chinese culture. Developed under the guidance of modern linguistic theories and in compliance with the law on the standard spoken and written Chinese language. this dictionary builds upon the rich experience and achievements of the Commercial Press in ancient Chinese language dictionary compilation, and makes full use of corpora such as the Database of Chinese Classics of Zhonghua Book Company and Database of Chinese Classic Ancient Books. It also refers to outstanding achievements in the field of ancient text compilation to ensure the quality of its content. It prioritizes clarity and practicality through concise definitions, phonetic guides for difficult characters, well-chosen textual citations, a comprehensive cross-referencing system, and extensive appendices. The entries are primarily based on traditional culture classics found in recent editions of primary and secondary school Chinese textbooks and basic reading lists, highlighting both their educational and cultural significance.