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Wu (午) Earthly Branch in Bazi

Wu (午) is branch 7 of 12, classified as Yang Fire. Learn its month, double-hour, hidden stems, harmony, clash, trine, and reading limits.

Chinese
午
Pinyin
Wǔ
Also known as
Wu Branch · Wu Fire · Horse Branch · Yang Fire Branch

Editorially reviewed:

Overview

Wu (午) is the Yang Fire branch associated with midsummer. It is a calendrical and structural chart symbol, not a stand-alone zodiac personality label.

At a glance

Character and reading
午 · Wǔ
Sequence position
7 of 12
Yin-Yang and phase
Yang Fire
Zodiac animal
Horse
Solar month and season
5th solar month · begins near Grain in Ear · Midsummer
Conventional double-hour
11:00–12:59
Hidden stems
丁 Fire · 己 Earth
Core relations
Harmony: Wei (未) · Clash: Zi (子) · Fire trine with Yin (寅) and Xu (戌)

Definition and place in the cycle

Wu is seventh in the cycle and occupies the middle of the summer branch group.

Wu (午) is classified as a Yang Fire Earthly Branch. Its animal is a calendrical mnemonic; neither the animal nor the phase alone establishes personality, strength, or outcome.

Season, solar month, and double-hour

Wu (午) governs the 5th solar month · begins near grain in ear and is associated with midsummer. The listed civil-clock double-hour is 11:00–12:59.

Wu corresponds to concentrated midsummer Fire near the summer-solstice period and should be distinguished from early-summer Si. Solar-term boundaries and the time standard used for a chart can shift the practical calendar or hour boundary, so calculate the chart rather than guessing from a date or wall clock alone.

Hidden stems and chart role

Wu (午) conventionally contains 丁 Fire, 己 Earth. Hidden stems describe internal elemental layers and possible roots; this page does not assign fixed weights because schools and calculation methods differ.

Wu conventionally contains Ding and Ji; its Yang branch category therefore cannot be reduced to the polarity of its principal hidden stem.

Branch relations and reliable reading boundary

Wu (午) forms a Six Harmony pair with Wei (未), a Six Clash axis with Zi (子), and a Fire trine group with Yin (寅) and Xu (戌). A listed relation is a structural possibility, not proof of a favorable, harmful, or transformed result.

  • Read month command, pillar position, hidden stems, visible stems, support, control, and timing together.
  • Do not reduce an Earthly Branch to its zodiac animal or one personality adjective.
  • Do not assume that a harmony, clash, or trine automatically activates or decides the whole chart.

Sources and editorial basis

  1. Hong Kong Observatory: Heavenly Stems and Earthly Branches
    An official modern reference for the canonical stem and branch orders, the sexagenary cycle, and calendrical use.
  2. 《御定星曆考原》卷一
    A historical source for stem and branch Yin-Yang, Five Phase, direction, seasonal, and calendrical correspondences.
  3. 《淵海子平》 (Yuanhai Ziping)
    A foundational Ziping reference for branch months, hidden stems, roots, and stem-branch relationships.
  4. 《子平真詮》 (True Explanations of Ziping)
    A major reference for month-command, structure, and contextual Bazi interpretation.
  5. OpenFate Editorial Methodology
    OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.
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