Because the Book of Changes is not used for divination. As one of the Four Books and Five Classics, it is one of the classic textbooks for ancient scholars to take the imperial examination. If the Book of Changes is used for divination and you also read books with chicken feathers, you can directly divine for yourself
The Book of Changes is essentially a way for ancestors of the Shang and Zhou dynasties, and even earlier, to record primitive life. For example, the “Hanzhang” in the Kun hexagram is a misinterpretation of “suppressing commerce”.
Academic numbers still start from the Five Elements, and as for the Book of Changes, it is second only
