Six Branch Combinations (地支六合)

In a nutshell: The twelve Earthly Branches pair off into six close bonds — when two matching branches meet, they lock together and may even transform into a new element.

What Is It?

Just as the Heavenly Stems have their five combinations, the Earthly Branches form six pairings known as the branch combinations (地支六合). These aren't random — they follow a precise pattern of Yin-Yang attraction across the branch cycle.

Each pair bonds intimately, which is why they're called the "Six Harmonies" (六合) — six close unions.

The Six Combinations

Memory aid: Start from Zi in the north and pair each branch with the one directly across the zodiac wheel — six pairs, one full loop.

Conditions for Transformation

As with stem combinations, branch combinations don't always transform fully:

1. Branches must be adjacent — the two branches need to sit in neighboring pillars (Year and Month, or Month and Day) for the bond to carry real strength. Distant pairs are too weak.
2. The month must support the target element — for instance, Chen and You combining into Metal needs a Metal-friendly month (Shen, You) or an Earth month (Chen, Xu, Chou, Wei) that generates Metal.
3. No clash interference — if one of the paired branches is simultaneously being clashed (say, Zi is pulled into a Zi-Chou combination while Wu clashes Zi from elsewhere), the combination falls apart.
4. Overall chart cooperation — the chart as a whole has to back the transformation direction; strong competing forces can block it.

When branches combine but don't transform, they still bond — the two are "stuck together," and each one's individual energy gets constrained.

What Do Branch Combinations Mean?

Branch combinations carry three layers of meaning — intimacy, cooperation, and constraint:

• Intimacy: The two branches are drawn to each other — think close friends or business partners who naturally gravitate together.
• Cooperation: Combined branches pool their effort toward a shared element, creating genuine synergy.
• Constraint (绊): Combination is also a kind of "tying up." A branch that's been combined can't freely exert its influence — which is good news if it's your unfavorable element, and a problem if it's your favorable element.

How to Read It in Your BaZi Chart

1. What's being bound? If the combination catches your favorable element, that element's power can't come through. If it catches your unfavorable element, the constraint is actually working in your favor.
2. Does the combination transform? A successful transformation replaces the branches' original elements with a new one. If it combines without transforming, both branches are simply locked in place.
3. Clash versus combination priority: When a branch combination and a clash appear simultaneously, the clash generally wins — check for clashes first, then see whether the combination can still hold.
4. Marriage and relationships: Branch combinations often surface in discussions of romantic bonds. If your Day Branch (the spouse palace) is being combined, it may signal a tight marital connection — or it may mean your spouse is being "combined away." The outcome hinges on the transformation's direction and whether the resulting element is favorable or unfavorable for you.

Common Misconceptions

❌ "Branch combinations always transform" — the conditions for transformation are strict. More often than not, the branches combine without transforming; they're simply "bound." ❌ "Combinations are always favorable" — binding an unfavorable element is great; binding a favorable element is a real problem. ❌ "Branch combinations outweigh three-harmony combinations" — three-harmony combinations are generally the stronger force. Branch combinations lean toward intimate bonds; three-harmony combinations lean toward concentrated elemental power.

📜 Classical source: San Ming Tong Hui (《三命通会》) and Zi Ping Zhen Quan (《子平真诠》) both discuss the Six Combinations. 🔗 Next: Three-Harmony Combinations