A Cultural Interpretation of the Relationship between Yi-ology and Dayan Calendar
The Dayan Calendar compiled by Monk Yi-hang of the Tang Dynasty has the characteristics of"sufficient preparation for calendar making,emphasis on actual measurement and verification","extensive reference to ancient books,dialectical and actuarial calculations","citing the classics of the Book of Changes,and legislation based on the'number of Dayan'".It is a typical example of the integration of ancient Yi and calendar.The compilation of the Dayan Calendar,from the overall concept to the specific numerical construction,is closely related to the culture of Yi-ology.It integrates philosophical ideas and their comteporary technology,which is a characteristic of the traditional Chinese culture,and in this manner leaves profound cultural implications.