What's the difference between Zhouyi, Yi Shu of Plum Blossoms and Duke of Zhou?

Zhouyi is a kind of Yijing, which is divided into three types: Lianshan, Guizang and Zhouyi. The first two have been lost. Yi Shu of Plum Blossoms was written by Shao Yong, a master of Xiang Shu School in the Song Dynasty, and it is a model of divination and fortune-telling. Duke Zhou is Zhou Wenwang's son, and Wang Wen and his son jointly interpreted the eight diagrams and sixty-four hexagrams. Duke Zhou also belongs to the category of Yi-ology, which makes sense but is a little superstitious. It is better to study Zhouyi, focusing on the study of Yi and thinking. Confucius said, good is easy but not easy to predict!