What Are Earthly Branch Six Harmonies (六合)?
Before diving into the pairs, it helps to know what each branch is made of internally — see our Hidden Stems Table: Chou, Si, Hai, Yin & All 12 Branches for the full reference.
In Bazi (Four Pillars of Destiny), the Six Harmonies (六合, Liu He) represent six special pairings between the twelve Earthly Branches. When two branches in a harmony pair appear together in your chart — whether in your natal pillars or through luck and annual pillars — they create a bonding force that can transform elemental energy.
How Do the Six Harmonies Work?
Each harmony pair combines to produce (or attempt to produce) a specific element. This process is called combination and transformation (合化, He Hua). The strength of the transformation depends on the surrounding chart conditions — sometimes the combination holds but doesn't fully transform, creating a "bonded but untransformed" state.
The key principle: harmonies attract and bond. Branches in a harmony pair are drawn to each other, reducing conflict and creating cooperative energy between the life domains those pillars represent.
The Six Harmony Pairs
1. Zi-Chou (子丑合) — Combines into Earth
Zi (子) is Water, and Chou (丑) is Earth. Together they combine into Earth energy.
This harmony represents the transition from the coldest point of winter (Zi, December) into the stabilizing earth phase (Chou, January). It symbolizes grounding restless energy — Water's constant movement becomes contained and stable through Earth's influence.
In a chart, this combination suggests a person who channels emotional depth into practical achievement. If both Zi and Chou appear in your Four Pillars, you may find stability comes through embracing structure rather than fighting it.
2. Yin-Hai (寅亥合) — Combines into Wood
Yin (寅) is Wood, and Hai (亥) is Water. Together they combine into Wood energy.
Water nourishes Wood — this is one of the most naturally productive harmonies. Hai represents late autumn's stored Water energy, while Yin represents the explosive growth of early spring. Their combination channels resources into growth and expansion.
People with this combination often have strong creative or entrepreneurial energy. Water feeding Wood suggests ideas flowing naturally into action. This pair is particularly favorable for careers in education, writing, or business development.
3. Mao-Xu (卯戌合) — Combines into Fire
Mao (卯) is Wood, and Xu (戌) is Earth. Together they combine into Fire energy.
This is an interesting transformation — Wood meeting Earth to produce Fire. Mao's fresh spring Wood provides fuel, while Xu contains hidden Fire within its earth. The combination represents passion ignited through friction.
In relationships, Mao-Xu harmony can indicate intense attraction between seemingly different personalities. The transformation into Fire suggests warmth, visibility, and dynamic energy when these two forces meet.
4. Chen-You (辰酉合) — Combines into Metal
Chen (辰) is Earth, and You (酉) is Metal. Together they combine into Metal energy.
Earth generates Metal — another naturally productive combination. Chen is spring Earth containing stored Water, while You is pure autumn Metal. Their bonding represents refinement and precision — raw resources being shaped into something valuable.
This combination in a chart often indicates talent for finance, technology, law, or any field requiring analytical thinking. The Metal transformation sharpens decision-making and adds determination.
5. Si-Shen (巳申合) — Combines into Water
Si (巳) is Fire, and Shen (申) is Metal. Together they combine into Water energy.
This is perhaps the most dramatic transformation. Fire and Metal — normally in a destructive relationship (Fire melts Metal) — instead combine to produce Water. Si contains hidden Metal within its Fire nature, while Shen contains hidden Water within its Metal nature. Their meeting unlocks these hidden aspects.
The Si-Shen combination represents transformation through apparent opposition. In practical terms, people with this combination may excel at finding creative solutions by bringing together seemingly incompatible ideas. It is highly valued in charts as it suggests adaptability and intelligence.
6. Wu-Wei (午未合) — Combines into Fire (or Earth)
Wu (午) is Fire, and Wei (未) is Earth. Together they combine, though practitioners debate whether the result is Fire or Earth — it often depends on the surrounding chart context.
Wu represents the peak of summer Fire, while Wei is the transitional earth phase of late summer. Their combination represents sustained warmth and nourishment — think of summer heat enriching the soil for autumn harvest.
This harmony often appears in charts of people who are warm, generous, and community-oriented. The Fire-Earth combination supports careers in hospitality, real estate, agriculture, or social leadership.
How to Read Harmonies in Your Bazi Chart
Location Matters
Where the harmony pair appears in your chart affects which life domains are bonded:
- Year + Month pillars: Harmony between family background and career path
- Month + Day pillars: Harmony between career and personal identity
- Day + Hour pillars: Harmony between self and children or creative output
- Year + Day pillars: Harmony between ancestry and personal identity
Harmony Across Pillars vs. Within Them
When a harmony pair spans two different pillars, it creates a bridge between those life areas. When a harmony comes from an annual or luck pillar combining with a natal pillar, it activates during that specific time period.
Use the Bazi Fortune calculator to generate your chart and identify which harmony combinations are present in your pillars.
Transformation Conditions
A harmony pair doesn't always fully transform. Full transformation typically requires:
- Both branches are present and not conflicted by clashes
- The resulting element is supported by the chart's seasonal energy
- No strong opposing forces disrupt the combination
When transformation is incomplete, the branches still bond and cooperate, but they retain more of their original elemental nature.
Six Harmonies in Relationships
Harmony combinations are significant in Bazi compatibility analysis. When your Day Branch forms a harmony with your partner's Day Branch, it suggests natural affinity and mutual support.
The most favorable relationship harmonies are those where the transformed element benefits both partners' Day Masters. For example, if both partners need Water, a Si-Shen harmony between their charts is especially auspicious.
Six Harmonies vs. Six Clashes
While the Six Harmonies represent cooperation, the Six Clashes (六冲) represent opposition. Each branch has both a harmony partner and a clash partner:
- Zi harmonizes with Chou but clashes with Wu
- Yin harmonizes with Hai but clashes with Shen
- Mao harmonizes with Xu but clashes with You
- Chen harmonizes with You but clashes with Xu
- Si harmonizes with Shen but clashes with Hai
- Wu harmonizes with Wei but clashes with Zi
Understanding both harmonies and clashes gives you a complete picture of the dynamic forces in your Bazi chart.
Key Takeaways
- The Six Harmonies are six special bonding pairs among the twelve Earthly Branches
- Each pair combines to produce a specific element through the He Hua transformation process
- Full transformation requires supportive chart conditions — otherwise the branches bond without fully changing
- Harmony location in your chart reveals which life domains cooperate naturally
- In compatibility, Day Branch harmonies indicate strong natural affinity between partners
- Understanding harmonies alongside clashes gives a complete picture of chart dynamics