Wu is the seventh of the Twelve Earthly Branches, belonging to Yang Fire, associated with the Horse zodiac sign, and corresponds to the Wu Hour (11:00–13:00). Wu Fire represents midsummer fire, internally containing Ding Fire and Ji Earth; it is characterized by intense heat and exuberance, symbolizing passion, vivacity, and energetic vitality. Wu Fire is also known as a 'Peach Blossom' location, indicating strong interpersonal charm and effervescent enthusiasm.
Wu Fire is identified from the Earthly Branches in the Four Pillars of Destiny chart. If Wu appears in the Year Branch, the native belongs to the Horse zodiac; if Wu appears in the Day Branch, the Spouse Palace is governed by Wu Fire. Wu Fire is strongest during Wu Month (the fifth lunar month).
A person born on a Bing-Wu Day has Wu Fire in the Day Branch representing Rob Wealth; their spouse is passionate and generous but tends to spend freely.