Red agate and amethyst that attribute to the Fire in Wu Xing represent the Suzaku. Each line stands for a Chinese Era, combination of the ten Tian Gan and twelve Di Zhi. Based on the different characteristics of Wu Xing, the lines may be presented as rational or perceptual, absolute or relative, to achieve mutual generation and mutual overcoming which is the core concept of Wu Xing. The combination of Tian Gan Di Zhi expresses the cycle of the universe, unification and reciprocation.
