Hap and Chung: How the Branches of a Saju Chart Pull Together and Tear Apart

2026-07-06 · computed with the solar-term engine (the Method)

A beginner reads a saju (사주) chart one character at a time, like a hand of cards. A practiced reader reads it like a room full of people — because the characters interact, and nowhere more actively than among the four earthly branches on the bottom row. Branches bond, ally, and collide with each other according to fixed geometric relationships on the twelve-branch wheel, and these interactions — hap (합, harmony) and chung (충, clash) chief among them — are often what separates the chart on paper from the life actually lived. Two people can hold similar elements in completely different arrangements, and the arrangement is the story.

If the twelve branches themselves are still new to you, start there; this article is about what they do to each other.

The Six Harmonies

The simplest bond is the yukhap (육합), the six pairings: Rat with Ox, Tiger with Pig, Rabbit with Dog, Dragon with Rooster, Snake with Monkey, Horse with Goat. Two branches in a harmony behave like clasped hands — they stabilize each other, and the palaces they occupy are read as cooperating. A day branch in harmony with the month branch, for instance, suggests a private life and a career that feed rather than fight each other. In compatibility work, a harmony between two people's day branches is one of the classic favorable signs: the two spouse palaces, holding hands.

The Trines: Three-Way Alliances

Stronger and stranger is the samhap (삼합), the three-way alliance. Four teams of three branches each, sitting at perfect 120-degree intervals on the wheel, and each team, when assembled, leans the whole chart toward one element: Monkey–Rat–Dragon toward Water, Tiger–Horse–Dog toward Fire, Snake–Rooster–Ox toward Metal, Pig–Rabbit–Goat toward Wood. Even two of the three — a "half harmony" — begins the pull. A chart whose branches complete a trine can effectively contain far more of an element than its visible characters suggest, which is one of the classic ways beginner readings go wrong: the eight characters are counted, but the alliance among them is missed, and the strength verdict comes out backwards.

There is also the seasonal variant, the banghap (방합) — Tiger–Rabbit–Dragon assembling spring's Wood, Snake–Horse–Goat summer's Fire, Monkey–Rooster–Dog autumn's Metal, Pig–Rat–Ox winter's Water — the branches of each season closing ranks. Same principle, directional rather than geometric.

The Six Clashes

Directly opposite branches on the wheel collide: Rat against Horse, Ox against Goat, Tiger against Monkey, Rabbit against Rooster, Dragon against Dog, Snake against Pig. This is the chung (충), the clash, and it is the interaction people fear most and misunderstand most. A clash is not a curse. It is kinetics — two characters that cannot occupy the same room quietly. Whatever palaces the clashing branches sit in are marked by motion: change, disruption, relocation, rupture, reinvention.

Palace placement is everything. A clash touching the month pillar tends to show up in career and family-of-origin — the person who leaves the hometown, changes fields, breaks with the family script. A clash on the day branch unsettles the spouse palace — relationships that require active maintenance, or a partner met through upheaval. A clash on the hour pillar stirs the later decades and the children's palace. And a chart with no clashes at all is not automatically blessed; classical readers noted that some frictionless charts belong to people who never leave the village, in every sense. Stagnation is also a fate.

The clash the incoming year delivers matters just as much. Each new year carries a branch, and when it opposes one of yours, that palace gets a kinetic year — this is much of what a Korean reader means by telling you a specific year will "move" your career or home. It is the yearly luck reading at its most concrete: not vague fortune, but a named collision with a named part of your chart.

When a Harmony Is Bad News

One more layer, because the system is subtler than "harmony good, clash bad." A harmony binds. Two branches absorbed in each other are partially withdrawn from their jobs — and if one of them was doing something vital for the chart, the bond is a problem. The tradition calls this giban (기반): a useful character, tied up. A chart whose crucial balancing branch is locked in harmony with a neighbor can behave as if that branch were barely there — well-liked, well-connected, and unavailable. Conversely, a well-placed clash can break a harmful alliance, the way one blunt friend disrupts a bad crowd. Good readers evaluate every hap and chung by asking the only question that matters: what was that branch supposed to be doing, and can it still do it?

Reading Your Own Row

Lay out your four branches and check three things. Any pair among the six harmonies? Note which palaces are cooperating. Two or three branches from one trine? Your chart leans toward that element more than a headcount shows. Any opposing pair? That is where your life keeps its moving parts — and the palace it touches is where change will keep arriving, invited or not.

Cast your free chart and look at the bottom row the way a reader does: not four separate characters, but one small room of people — some holding hands, some squaring off, and the whole life shaped by which is which.