Zhouyi, gossip and plum blossoms are easy to count.

The Book of Changes is the basis, and The Book of Changes of Plum Blossoms is a detailed version of the Book of Changes, or an expanded book for later generations. Gossip is the foundation of Zhouyi, which was created by Fuxi. There were three changes in ancient times: Lianshan in Shennong era, Tibet in Huangdi era, and Zhouyi in Spring and Autumn Period. Zhouyi was written by Wang Wen, explaining gossip. The number of plum blossoms changed in the Ming and Qing Dynasties ... It seems that it was written by Shao Yong (I can't remember) (his book "The Quiet History of Huang Ji" can be called knowledgeable person. I am a beginner in the Book of Changes, and I am not very good at it. I only know how to use money for divination, but I don't know this time algorithm. Most experts who study the Book of Changes don't surf the Internet much, so you have to find someone to interpret divination for you.