The Dictionary of Zhouyi contains more than 4,000 entries. It includes seven categories: common knowledge of the Yi study, Yi examples of the Yi school, key words in the classics, derivatives of Yi words, famous scholars in the Yi study, essential books of the Yi school, and other categories. The first issue of the volume contains twenty-nine important Yi diagrams and Yi tables from various schools. Each diagram is followed by a brief explanation, which is related to the main text entries. The main text lists in detail the entries related to Yixue, and conducts detailed research and analysis.