What exactly did Zhouyi say?

Zhouyi is an encyclopedia, which mainly includes philosophy, economics, military science, education, traditional Chinese medicine, geomantic omen, physiognomy, palm reading, divination, management, astronomy and so on. It was gossip, and there were no words at that time. By the time of King Wen, in order to better understand, King Wen added oracles, King Wu added words, and by the time of Confucius, he added ten wings.