If the compatibility charts feel a little arbitrary to you, this is the article that explains where they actually come from. The Chinese zodiac has two structural patterns that practitioners have used for centuries: the Liu He, or six harmonies, and the Liu Chong, or six conflicts. Once you understand these two, every compatibility table you ever read will suddenly make sense. I have spent a long time with the old texts on this, so let me give you the version that is accurate without being mystical.
What Are the Six Harmonies (Liu He)?
The six harmonies are six fixed pairs of animals considered to be "secret friends"—signs that support, protect, and balance each other. In a harmony pairing, the strengths of one animal cover the blind spots of the other. These are widely regarded as the most stable and supportive matches in the entire system, in love and in life.
| Harmony Pair | Why It Works |
|---|---|
| Rat & Ox | The Rat's quick mind meets the Ox's steady follow-through. |
| Tiger & Pig | The Tiger's drive is softened by the Pig's warmth and patience. |
| Rabbit & Dog | Two kind, loyal signs who build deep trust easily. |
| Dragon & Rooster | The Dragon's vision is grounded by the Rooster's precision. |
| Snake & Monkey | Two clever strategists who keep each other sharp. |
| Horse & Goat | The Horse's energy pairs with the Goat's calm creativity. |
If your sign and your partner's sign form one of these pairs, tradition says you have a natural ally. For a wider view of romantic matching, our love compatibility guide builds on these foundations.
What Are the Six Conflicts (Liu Chong)?
The six conflicts are the opposite pattern: six pairs of animals that sit directly across from each other in the 12-year cycle, six positions apart. These are the classic "clashing" signs—two strong temperaments pulling in different directions. Tradition flags them as the highest-friction matches, the ones that require the most conscious communication.
| Conflict Pair | The Tension |
|---|---|
| Rat & Horse | Caution and security versus freedom and spontaneity. |
| Ox & Goat | Routine and structure versus sensitivity and flexibility. |
| Tiger & Monkey | Two clever leaders competing for the upper hand. |
| Rabbit & Rooster | The Rabbit's tact versus the Rooster's bluntness. |
| Dragon & Dog | Idealism and pride versus realism and principle. |
| Snake & Pig | Guardedness and strategy versus openness and trust. |
Now—and I cannot stress this enough—a conflict is a description, not a sentence. It tells you where two people are likely to rub up against each other, which is genuinely useful information. Knowing the friction in advance lets you handle it on purpose. Our guide to signs that should avoid each other covers how to navigate these pairings instead of fearing them.
The Three Harmonies (San He)
There is a third pattern worth knowing: the San He, or three harmonies, which groups the 12 animals into four trios that share natural chemistry. These are Rat–Dragon–Monkey, Ox–Snake–Rooster, Tiger–Horse–Dog, and Rabbit–Goat–Pig. While the Liu He pairs are about one-to-one "secret friendship," the San He trios describe broader compatibility within a group. You will see these trines reflected in our full compatibility chart.
How to Use This in Real Life
Start by finding both people's animals. If they form a harmony pair, lean into that natural support. If they form a conflict pair, treat it as a heads-up: agree early on how you will handle disagreements, and give each other room for your different styles. Most relationships are neither a perfect harmony nor a direct clash—they sit somewhere in between, which is exactly where communication does the heavy lifting. For elements layered on top of these patterns, see our guide on how the five elements affect love.
A Word of Caution
I will repeat the line I use across this whole site, because it matters most on the topic of relationships: this is tradition, not destiny. The harmonies and conflicts are a fascinating, centuries-old map of human temperament, and they are wonderful to reflect on. But no pattern of animals should decide who you love or leave. Read it for insight, enjoy the conversation it sparks, and trust your own judgement above any chart. Everything here is for entertainment and informational purposes only.
FAQs
What is the difference between Liu He and San He?
Liu He (six harmonies) are six one-to-one "secret friend" pairs. San He (three harmonies) are four trios of signs that share broad chemistry. Both describe supportive relationships in different ways.
My partner is my conflict sign—should I worry?
No. A conflict pairing simply means more natural friction to manage. With honest communication and respect for each other's style, clashing-sign couples can build excellent relationships.
Can a couple be in both a harmony and a conflict?
Not as the same pair—each animal has exactly one harmony partner and one conflict partner. But once you add elements and other factors, real relationships are always more layered than a single label.
How do I find my animal sign?
Use our zodiac calculator. It applies the Lunar New Year cutoff for you, which matters if you were born in January or early February.