The Inner Chapter of the Illustrated Explanation of Yixiang

Written by Zhang Li in the Yuan Dynasty. There is a "picture of the number of hooks and depths of the elephants in the Great Yi", which has been recorded. There are three chapters in the book, which are called Benshu, Yuan Gua Hua, and Ming Lei Ce. There are also three outer chapters, which are called the number of images, the hexagrams and the Yao, and the number of degrees. Mr. Xiyi Chen's "Preface to the Dragon Picture" says: "The dragon and horse began to bear the picture, which originated from the era of Emperor Xi, which preceded the ancient times." Now there are still doubts about the positions that have been combined, how much more should the number of unjoined ones be revealed? But how to know it? The answer is: I know its purpose by studying the meanings of the Master's three Chen and Jiu hexagrams.