The acquired eight trigrams is a planar graph, each of which represents an orientation. There are eight orientations in total. The starting point of the acquired eight trigrams is Kan trigrams, which are arranged in a clockwise order, namely Kan, Kun, Zhen, Xun, Qian, Dui, Gen and Li. Each trigrams has its own corresponding symbol table, which are: ☵、☷、☳、☴、☰、☱、☶、☲, and each trigrams represents different directions Position, character, human organ, event, earth branch, five elements, color and other information. An acquired eight diagrams map is divided into 360 degrees, known as "360 degrees circuit". Because the acquired eight diagrams contain rich information about people, it is said that the acquired eight diagrams are important diagrams for the forecast of things in the book of changes.