This time, we will introduce the first diagram, the qian diagram. Please note that what we are introducing here is the single diagram in the acquired eight diagrams, not the diagram in the book of changes. The book of changes introduces the duplicated-diagram, which is composed of two single diagram. We will keep updating the diagram in the future.

Qian diagram is the only pure Yang diagram in the eight trigrams. The pure Yang diagram is composed of three solid lines ('☰'). Qian diagram ranks first in the congenital eight trigrams and the sixth in acquired eight diagrams. In the family, Qian diagram represents the head of the family, such as the old father; in the family of two people, Qian diagram represents the husband; in the work, Qian diagram represents the leader and the boss; in the human body, Qian diagram represents the head Face, bone; in geographical position, the qian diagram represents the Northwest with you as the center; of course, the most obvious is heaven. In a word, the things represented by the qian diagram have main, key, leadership, authority and other characteristics.