There are two versions of The Duke of Zhou, one is written by the Duke of Zhou according to legend, the other is a compilation written by modern people, and the latter is not from The Book of Changes!
Ji Dan (Duke of Zhou) ritual and music system, after the establishment of the ancient Zhou Dynasty, the most important thing was ritual, and divination was generally required (referring to the inscription of Zhou Dynasty, Oracle Bone Inscriptions divination was a customary ritual from Shang Dynasty to Zhou Dynasty), so Duke of Zhou did not write Zhouyi, but Zhou Wenwang's Zhouyi had a great influence on Duke of Zhou's ritual formulation!