This book is divided into two parts: the main body and the appendix. The main body part takes Zheng Xuan's annotations of the "Book of Changes" as the research object. With the help of the two books "Zheng Annotation of the Zhou Yi" and "Yi Wei Zheng Annotation", using a combination of tables and text, it explores the theory used by Zheng Xuan to interpret the "Book of Changes" and discusses the origin, evolution and influence of the theory on later generations. On this basis, the rationality of the theory used is evaluated. The appendix contains seven types of "Zheng Zhu" and "Yi Wei Zheng Zhu". On the basis of transcribing the original text, the revised text is the main text, providing a reasonable and reliable text for the study of Zheng Xuan's Yixue thoughts.
