This book is compiled based on the ancient engraving of Dejutang in the Qing Dynasty in the National Palace Museum. It is said to be written by Shao Yong. It is a rare copy of Plum Blossom Heart Yi handed down from generation to generation. Relying on the theory of Xiangshu in the Book of Changes, we have created a variety of methods for starting hexagrams based on the heart, objects, numbers, and time, etc. You can start hexagrams without using copper coins. The whole book uses the principle of body and function and the prosperity and decline of the five elements as the criteria for divining divinations. It discusses in detail various divination methods such as seeking wealth, marriage, home, travel, illness, etc. It corrects omissions and errors in popular versions, and completely retains the ancient divination ideas. It is an authoritative introductory book for studying the number of plum blossoms.