“Yellow River Diagram” discovered by Bok-hui, who was consequently inspired to draw the first I Ching trigrams. Based upon the principles of yin-yang and the five elements, the diagram, bestowed upon Bok-hui by the spirits of heaven and earth through spiritual inspiration, encapsulates the life cycle of all existence. The diagram depicts the numbers one to ten with the even (yin) numbers represented by black dots and the odd (yang) numbers represented by white dots. Hado represents the unification, harmony, and sangsaeng of the Later Heaven. See also “Bok-hui.”