丑午害

chǒu wǔ hài · Chou-Wu Harm

丑午害 is one of the six harms of the earthly branches, a pairing in which Chou and Wu are said to damage each other through an indirect interaction of clash and combination.

Deep Oracle Practitioner Desk · 2026-09-19 · 6 min read

取义

In the system of the six harms, Chou and Wu are classified as a harm between officer and ghost. The reasoning rests on the seasonal strength of the hidden stems. Wu is the peak of fire, the place where fire reaches its most flourishing state. Its nature is bright, rising, and forceful. By contrast, the metal hidden within Chou is in a dead or exhausted condition. When the strong fire of Wu presses directly upon this weakened metal, the relationship is described as one of domination rather than mutual injury. The harm is therefore called officer-ghost harm, because the powerful element acts upon a hidden element that cannot resist.

This reading follows the model in Sanming Tonghui, where the harms are not treated as simple collisions. Instead, each pair is understood through the condition of the elements stored within the branches. In the case of Chou and Wu, the emphasis falls on the contrast between a blazing external force and a depleted internal resource. The harm is not symmetrical. Wu is active and aggressive; Chou is passive and vulnerable. The result is an underlying tension in which one side is overbearing and the other side is worn away.

由冲合而生

The Chou-Wu harm arises from the interaction of a clash and a combination. Chou is normally clashed by Wei. Wu and Wei form a combination. When Wu combines with Wei, it draws Wei away, leaving Chou without its natural counterpart. The harm is therefore not a direct opposition, but an indirect consequence of a third branch being pulled out of position. Chou fears the clash from Wei, and Wu removes Wei through combination. What remains is an awkward relationship between Chou and Wu.

This origin explains why the six harms are not an independent system equal to the six clashes and six combinations. They are derivative patterns produced by the interplay of clash and combination. A harm exists because one branch loses its expected counterpart or because a relationship of unity is disrupted by a relationship of opposition. In the Chou-Wu case, the unity between Wu and Wei takes precedence over the opposition between Chou and Wei. Chou is left exposed, and the resulting discomfort between Chou and Wu is called a harm. The six harms therefore have no separate logic of their own, but depend entirely on the rules of clash and combination.

位置与轻重

According to Sanming Tonghui, the harm relation is most significant when it appears between the day pillar and the hour pillar. The day branch and the hour branch are close in the chart structure, and tension between them affects the immediate expression of the person and the later stage of life. The harm is also noted in the body and life palace positions, but with less weight than the day-hour position.

In practice, the six harms are generally weaker than clashes and combinations. A clash is a direct confrontation; a combination is a direct union. A harm is a concealed friction. It tends to indicate hidden disagreement, quiet resentment, or slow erosion rather than open conflict. For this reason, traditional practice treats the harms as a supplementary reference. They are not used alone as the main basis for judging fortune or misfortune. Their role is to refine a reading when other structures have already been identified.

Another condition applies. If the original four pillars do not contain both Chou and Wu, the harm is not active. It becomes relevant only when a later year or luck cycle brings the missing branch. For example, if the natal chart contains Chou but not Wu, then a Wu year or a Wu luck cycle can complete the Chou-Wu harm for that period. This shows that the harm is situational. It depends on the presence of both branches at the same time, whether in the natal chart or through the arrival of a moving branch.

命例

A chart with year pillar Xin Chou, month pillar Xin Chou, day pillar Wu Wu, and hour pillar Gui Chou presents the Chou-Wu harm between the year branch and the day branch. The year branch Chou and the day branch Wu form the harm. The pattern of the chart is Jia Se Ge, the sowing and harvesting pattern, in which earth is the dominant element. Chou is an earth branch with hidden water and metal. Wu is a fire branch with hidden earth. The harm here is framed by a strong earth configuration, so the fire of Wu feeds the earth rather than producing an external clash. The harm remains a background friction within the chart, located between the year and day positions.

Worked example (solar 1962-01-20 1:00, female, computed by this site's engine):

YearMonthDayHour
Stems辛 (伤官)辛 (伤官)戊 (DM)癸 (正财)
Branches

Pattern: 稼穑格 · Strength: 极旺 (engine verdicts)

常见误区

A common error is to treat the six harms as having the same force as clashes. This overstates their role. A harm is not a direct collision, and it does not carry the immediate disruptive power of a clash. Treating Chou-Wu harm as equivalent to a Chou-Wei clash leads to exaggerated readings. The harm is a secondary pattern and should be used only after clashes, combinations, and the strength of the stems have been assessed.

Another error is to assume that the harm is always negative in a visible way. Because it is called a harm, readers sometimes expect open conflict or disaster. In the Chou-Wu case, the harm often shows as subtle pressure, hidden displeasure, or a draining influence rather than a dramatic event. The phrase officer-ghost harm can mislead if it is read as a literal supernatural or legal catastrophe. It refers to a relationship of dominance between hidden elements, not to an automatic external event.

A further mistake is to regard the six harms as a fixed rule independent of context. As noted, the Chou-Wu harm exists only when both branches are present. If a chart has Chou but no Wu, no harm is formed until Wu arrives. Even then, the harm must be weighed against the overall structure. If the chart is dominated by earth, the harm may be absorbed into a larger pattern and produce only mild friction. If the chart is weak in earth or if Wu fire is excessive, the same harm may be more noticeable. The branch relationship is therefore not a static verdict but a conditional factor whose meaning changes with the surrounding pillars and the moving cycles.

Classical sources cited

  • 三命通会·论六害

Lookup tables are generated from this site's chart engine; quotations are verified against the cited works.

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Chou Wu Harm: The Branch Interaction in Six Harms