Yin-Yang and Five Elements: Wu belongs to Yang Fire (contains Ding Fire as the main Qi), internally includes Ji Earth, characterized by extreme Yang and intense heat.
Monthly Position: Corresponds to the fifth lunar month (Grain in Ear month), position is due south, Five Elements number 2/7.
Zodiac Correspondence: Represents the Horse in the twelve zodiac animals.
Hidden Stems Characteristics: Contains Ding Fire/Ji Earth, known as the "Beacon Tower" where energy gathers and disperses.
Special Relationships:
Six Conflicts: Zi and Wu conflict
Six Harmonies: Wu and Wei harmonize
Three Harmonies: Yin, Wu, and Xu form the Fire trine
Three Meetings: Si, Wu, and Wei meet in the southern Fire