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. Mei Hua Yi Shu was written by Shao Yong, a master of Xiangshu School in the Song Dynasty. It is a model of divination and fortune telling. Duke Zhou is the son of Zhou Wenwang, and both Wang Wen and his son have interpreted the eight diagrams and sixty-four hexagrams. Duke Zhou also belongs to the category of Yi-ology, which makes sense, but he is a little superstitious. In studying Zhouyi, it is better to focus on the Yi School and pay attention to thinking. Confucius said: Good is easy but not evil!