TRIPODTERRA
BaZi marriage compatibility — 合婚 — is one of the oldest applications of the four pillars. Before a modern reader checks anything else, it's worth knowing what the method actually looks at, and what it can reasonably claim.
What a compatibility reading actually checks
1. Day Masters — the couple's core chemistry
The Day Master is the element of your birth-day stem, and it sets the baseline of personality. The five pairs interact in a cycle of generating and controlling:
- Wood and Fire — generating: one fuels the other's enthusiasm.
- Fire and Earth — generating: warmth that settles into stability.
- Earth and Metal — generating: structure that sharpens into direction.
- Metal and Water — generating: discipline that channels ambition.
- Water and Wood — generating: strategy that grows into action.
Controlling pairs (Wood–Earth, Fire–Metal, Earth–Water, Metal–Wood, Water–Fire) aren't "bad" — they read as push-and-pull. Many long marriages are controlling pairs; the friction is also a check and balance.
2. The earthly branches — the year and day of birth
The second layer looks at the twelve animal branches of the birth year and birth day. Traditional tables highlight pairings believed to clash or harmonize — for example, the six 冲 (clashes) and six 合 (combinations). A reader weighs these alongside the element analysis, never in isolation.
3. Support versus drain — the balance layer
A good reader then asks: does each chart support the other? If one person's element is weak and the partner's chart feeds that element, the match reads as mutually supportive. If both charts are missing the same element, a reader may suggest how to compensate — with environment, timing, or simply awareness.
How to check compatibility step by step
- Get both full birth data — year, month, day, and hour. The hour matters; it changes the day branch and the whole reading.
- Compare Day Masters — same element? Generating pair? Controlling pair?
- Compare the year branches — check the traditional clash/combination tables.
- Look at each chart's balance — what's missing, what's over-strong, and whether the partner supplies it.
- Read the luck cycles together — two people can be compatible by elements but be in clashing 大运 decades. Timing changes the experience of a marriage as much as the charts do.
A sane way to use the result
Think of a 合婚 reading the way you'd think of a personality test: it names tendencies, not verdicts. A "clashing" chart doesn't doom a marriage — it points at where friction will live, which is useful only if you act on it with patience. Every tradition that uses BaZi for marriage also stresses the fifth pillar: how the two people actually treat each other.
Curious what your chart and your partner's chart say side by side? Generate your free BaZi chart on TripodTerra and let the AI marriage compatibility analysis walk you through the Day Masters, branches, and luck cycles in plain language.