Chinese astrology judges a match on two systems: the Six Harmonies (六合, six natural pairs) and the Three Harmonies (三合, four trines of three). Clashes matter too — and they are not the verdict most people assume.
Six pairs sit opposite each other in the cycle and are said to clash: Rat–Horse, Ox–Goat, Tiger–Monkey, Rabbit–Rooster, Dragon–Dog and Snake–Pig. A clash means two people who pull in genuinely different directions. Handled consciously that is productive — it means someone is always questioning the plan. Handled unconsciously it is corrosive.
And remember: your animal is one pillar out of four. Two people with clashing animals and compatible day masters often do perfectly well.
Animal compatibility is the coarse layer. A full BaZi comparison is the specific one.
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