Branch geometry · 三合 Sān Hé

Chinese Zodiac Compatibility: 78 Pairs, 4 Trines & Relations

78 animal pairs include 12 same-sign comparisons. Compare harmony, clash, harm, break, punishment, 4 trines, hidden stems and directional phase links.

How the patterns differ

Each name describes a different geometric relationship between fixed positions on the cycle.

Paper-cut Rat, Dragon and Monkey arranged around an endless-knot motif
三合Three branches · one geometric group

Choose the comparison

Select two animals below for a year-branch comparison. For birth dates and known or unknown times, compare complete or partial BaZi charts to read Day Masters, stem pairs and branch relationships across all available pillars.

Two branches, one complete comparison

Compare two zodiac animals

Choose any pair, including the same animal twice. The reading checks every fixed branch relation, then adds the phases and trines each position carries.

Four groups around one cycle

The four trines

Each trine gathers three animals traditionally read as sharing a temperament. The descriptors below summarize the traditional themes attached to each group.

The full atlas

Each trine in full

The geometry behind the grouping, what each member carries, and the three branches the group stands opposite.

  1. 01Water trineMonkey · Rat · Dragon
  2. 02Wood trinePig · Rabbit · Goat
  3. 03Fire trineTiger · Horse · Dog
  4. 04Metal trineSnake · Rooster · Ox

Two core pair sets in view

Harmony and opposition

Trines are the best-known grouping and not the only one. These two ledgers show the one-to-one matches and opposing axes; the full relationship atlas continues through seasonal meetings, harms, breaks and punishments.

Open all branch relationship guides
六合

The six harmonies

Six pairs whose positions balance across the cycle. Each pair sums to a constant place on the twelve, which is the whole of the rule.

  1. 01

    子 Rat丑 Ox

  2. 02

    丑 Ox子 Rat

  3. 03

    寅 Tiger亥 Pig

  4. 04

    卯 Rabbit戌 Dog

  5. 05

    辰 Dragon酉 Rooster

  6. 06

    巳 Snake申 Monkey

六冲

The six clashes

Six pairs sitting directly opposite, six places apart. Because they are opposite, the two never share a season, a direction or an hour.

  1. 01

    子 Rat午 Horse

  2. 02

    丑 Ox未 Goat

  3. 03

    寅 Tiger申 Monkey

  4. 04

    卯 Rabbit酉 Rooster

  5. 05

    辰 Dragon戌 Dog

  6. 06

    巳 Snake亥 Pig

All three groupings come from the same twelve positions counted differently: four places apart makes a trine, six places apart makes a clash, and the harmony pairs are the six that balance across the circle. Nothing in any of them is derived from what the animals are like — the geometry comes first and the character reading comes after.

One branch system

Where the trines sit

A year animal is one layer of several. The trines rest on the same twelve earthly branches that drive the calendar, the hour periods and the month animals — so a trine is a statement about positions in that cycle, and it reaches a chart the same way every other branch relation does.

Every unordered pair, once

Browse all 78 pair readings

Each pair has one canonical page, so Rat with Ox is the same reading as Ox with Rat. Same-animal comparisons are included because a branch can repeat across chart layers.

  1. 子 Rat pairs

  2. 丑 Ox pairs

  3. 寅 Tiger pairs

  4. 卯 Rabbit pairs

  5. 辰 Dragon pairs

  6. 巳 Snake pairs

  7. 午 Horse pairs

  8. 未 Goat pairs

  9. 申 Monkey pairs

  10. 酉 Rooster pairs

  11. 戌 Dog pairs

  12. 亥 Pig pairs