Mr. Zhu is a famous Yi-ology scholar in China, the founder of Yi-ology philosophy and the master of the study of Yi-ology philosophy. Mr. Wang believes that before western philosophy was introduced to China, China people's theoretical thinking was basically carried out through Yi-ology. Therefore, if we study China's philosophy instead of Yi-ology, we can't profoundly grasp the characteristics of China's traditional theoretical thinking. It is based on this understanding that it took Mr. Zhu ten years to complete the magnum opus "The History of Zhouyi Philosophy" with1500,000 words. This book systematically discusses the development of Yi-ology philosophy from pre-Qin to Qing Dynasty. The content is informative, the analysis is meticulous, and each part is full of insights, from which we can see Mr. Zhu's profound skill in academic research. This book fully embodies the characteristics of paying equal attention to original materials and theoretical analysis of Peking University School. It can be said that it is a rare classic in China's philosophy circle in the late 20th century, which opened up a new direction for the study of China's philosophy history. This is also the place where Mr. Zhu surpassed his predecessors. Mr. Zhang's philosophy research of Yi-ology runs through philosophy and Confucian classics, which largely makes up for the lack of ignoring Confucian classics in the study of philosophy history in the 20th century and promotes the concern of Confucian classics in the study of philosophy history. Mr. Zhu believes that it is impossible to study the history of philosophy without studying Confucian classics. Due to the particularity of Yi-ology, Mr. Zhu attached great importance to the distinction between righteousness and divination, consciously inherited Confucius' spirit of "keeping its morality" and "ignoring its reason", and resolutely opposed any form of divination activities. Mr. Yi's philosophical research has a great influence at home and abroad, and his masterpiece, A History of Philosophy of Yi Studies, has been translated into Japanese and Korean, and will be published soon.