The Six Branch Combinations: Zi-Chou to Wu-Wei

When Branches Pair: The Magnetism of Opposites

Every Earthly Branch has a partner. Zi pairs with Chou, Yin with Hai, Mao with Xu, Chen with You, Si with Shen, Wu with Wei. These aren't random — they follow the River Chart number logic that also produced the Five Stem Combinations. But branch combinations work differently. Branches don't float above like stems do. They touch the ground. A branch combination always has physical weight — a body moving toward another body, a season reaching for its counter-season, a place finding its mirror. When two branches combine, space rearranges. That's what makes liu he (六合) practical. You can see it in the floor plan.

Six Combinations = Zi丑→Earth, Yin亥→Wood, Mao戌→Fire, Chen酉→Metal, Si申→Water, Wu未→Fire/Sun. Each named for its quality: 恩合 (grace), 义合 (duty), 情合 (passion), 生合 (generation), 刑合 (punishment-love), 明合 (open). Originating in the River Chart's spatial pairings. Three conditions govern transformation: directional alignment, seasonal support, and absence of breaking branches.

Where the Six Combinations Come From: The River Chart in Space

The River Chart (河图) places numbers in space, not just in abstract. North: 1 and 6 (water). South: 2 and 7 (fire). East: 3 and 8 (wood). West: 4 and 9 (metal). Center: 5 and 10 (earth). The Earthly Branches occupy these same directions. Zi sits at true north (1, water). Chou sits just northeast (earth, the center's extension). Pair the branch of a direction with the branch that holds the center's number from the opposite side, and you get a union that produces something new. The pattern: the yang branch (子寅辰午申戌) combines with the yin branch it meets when you fold the zodiac ring in half. Zi (north) pairs with Chou (northeast, carrying earth's 5-10), and together they produce earth. This folding pattern repeats six times around the wheel. The combinations are spatial. They exist because the ring of twelve branches is a map, not a list.

The Six Pairs: What Each Union Means

Zi丑→ Earth (恩合, the grace union). Zi is midnight water, pure and cold. Chou is frozen earth holding hidden metal and water. Cold water meets cold earth — the combination is slow, reluctant, but stable once formed. Called grace because neither branch dominates. They shelter each other. This is the union of equals in difficulty. Yin亥→ Wood (义合, the duty union). Yin is early-spring wood, rising. Hai is deep-winter water, the reservoir that fed the seed. The seed meets its source and grows into it. Duty: Hai gave Yin life, so Yin rises carrying Hai inside itself. This is the parent-child combination — obligation, not passion. Mao戌→ Fire (情合, the passion union). Mao is pure spring wood, the flowering branch. Xu is autumn earth holding fire's grave. Wood feeds fire, fire returns to earth — a cycle of consumption that produces heat. Passion because it burns: Mao gives itself to Xu and both are consumed. The hottest and fastest combination. Chen酉→ Metal (生合, the generation union). Chen is spring earth, wet and nurturing. You is autumn metal, sharp and formed. Earth generates metal — the classic productive cycle. Chen's hidden water tempers You's blade. This is the mentor-student combination. Clean. Supportive. Unequal in a way that works. Si申→ Water (刑合, the punishment-love union). Si is summer fire holding hidden metal. Shen is autumn metal holding hidden water. Fire and metal sit together already — Si contains庚 (Shen's own stem). So these branches are siblings who share substance but conflict by nature. Fire punishes metal, but metal carries water, and that water douses fire. Punishment-love: they can't leave each other and can't be peaceful. Wu未→ Fire/Sun (明合, the open union). Wu is peak summer fire. Wei is late-summer earth holding fire's embers. Fire and earth, both yang-bright, both hot. No secrets. No hidden agendas. Sun meeting its own reflection in the dry soil. Open because nothing is concealed — what you see is the combination.

The Three Conditions for Branch Transformation

Branches combine more easily than stems, but transformation is still conditional. Condition one: directional alignment. The combining pair must sit in positions that support the target element's direction. Zi丑→ Earth: the branches should occupy north/northeast positions or have earth-season backing. Yin亥→ Wood: east/northwest positions support wood's rising energy. Without directional alignment, the spatial logic of the combination breaks. Condition two: seasonal command. The month branch must favor the produced element. This is the same rule as stem transformation — the environment decides what can grow. Zi丑→ Earth in a Chen/Xu/Chou/Wei month: transformation succeeds. Same combination in a Zi month (deep water): water freezes the attempt. Chen酉→ Metal in a Shen/You month: metal sharpens. Same in a Yin/Mao month: wood blunts the blade. Condition three: no clash to either combining branch. A clash (冲) to Zi or Chou destroys the combination before it can form. Wu clashes with Zi — if Wu appears in the chart, Zi丑 cannot complete their union. Wei clashes with Chou — same result. The combination holds only when both branches are undisturbed. This condition is stricter than the stem rules. Stems can combine despite root clashes. Branches cannot. The foundation matters more than the roof.

Binding Without Transformation: Six Patterns of Entanglement

Branch combinations that don't transform create binding (合绊). But branch binding operates deeper than stem binding because branches govern internal life — emotions, home, body, the private self. Six binding patterns to recognize: (1) Attraction binding: the two branches pull toward each other and ignore other branches. A Month Branch that combines with the Year Branch stops supporting the Day Master — the calendar is elsewhere. (2) Sealing binding (合闭): a branch that acts as a tomb (墓) combines and locks. Chou combines with Zi — Chou is metal's tomb. If metal is a useful god, the combination seals it away. Access denied. (3) Fixation binding (合住): a moving branch (驿马) combines and stops moving. Yin (the horse) combining with Hai freezes travel plans. Good if you need stability, disastrous if the chart needs motion. (4) Strife binding (争合): two branches compete for one partner. Two Chou branches both reaching for one Zi — earth consumes water without resolution. The person has two homes, two identities, two loyalties that cannot coexist. (5) Jealousy binding (妒合): three branches triangulate. Chen and You combine, but Xu stands opposite Chen and clashes — the third party who destroys the marriage. (6) Punishment binding (刑合): Si and Shen combine while also punishing each other. Attraction with damage built in. The relationship that feels like home and hurts every day.

Self-Combining Branches: When the Union Is Inborn

Some branches carry their own combination — a hidden stem inside the branch that pairs with another hidden stem. These are自合 (self-combinations), and they matter because they don't need a partner. The branch arrives already merged. Key self-combining branches: 子 (contains癸) has no self-combination — it's pure, seeking externally. 丑 (contains己癸辛):己and甲combine —丑can self-combine if甲appears elsewhere, but not internally. 午 (contains丁己):丁壬combine and戊癸combine —午carries two potential self-combinations. This is the branch of internal romance. 亥 (contains壬甲):壬丁combine and甲己combine —亥is self-contained, the branch that doesn't need others. The practical use: a Day Branch that self-combines indicates a person whose emotional life is internally resolved. They don't rely on a partner for completion. This is freedom or loneliness, depending on the chart's other structures. A self-combining Day Branch under clash: the internal union breaks. The person loses their emotional baseline. This is harder to recover from than a simple relationship ending — the self they knew dissolves.

Seven Dimensions

Career & Wealth

Month Branch combining with Year Branch: career bends toward legacy or family expectations. The person's professional path serves an older agenda. Hour Branch combining with Day Branch: work output merges with emotional life — creative work feels personal, career feels like relationship. Branch combination involving wealth star (寅亥if寅holds戊): money flows through obligations, not ambition. The wealth arrives because someone is owed, not because someone hunted.

Love & Relationship

Day Branch combining with Month Branch: the spouse and the parent are entwined. These marriages involve family approval, inheritance, or obligation. Day Branch combining with Hour Branch: the spouse and the child compete for the same emotional space — or collaborate beautifully if the element produced matches the Day Master's need. Branch clash destroying a Day Branch combination: the most common divorce marker in Bazi. More reliable than stem clashes because branches govern actual cohabitation.

Personality

Multiple combinations in the branches (three or more): the person's inner life has compartments that don't communicate. They are genuinely different people in different rooms — not pretending, just internally partitioned. A single combination in the Day Branch: emotional clarity, one relationship template, one way of being loved. Zi丑in Day/Month: personality shaped by hardship — patient, deliberate, slow to trust, unshakeable once committed.

Health

Branch combinations affect the body segments the branches rule. Zi (kidney/ears) combining with Chou (spleen/stomach): water and earth imbalance — digestive dampness or fluid retention. Si (heart/small intestine) combining with Shen (lung/large intestine): fire punishing metal — inflammatory conditions, skin issues, breathing sensitivity. The produced element matters: Si申→ Water means fire and metal transform into water; monitor kidney function during this combination's active period. A clashed self-combining Day Branch: sudden health event at the body system governed by the branch pair.

Classical Sources

Practical Application

Check for clashes before reading any combination : Before interpreting a branch combination, scan the chart for clashes. A clash to either branch kills the combination. Zi丑is present, but Wu is also present — Wu clashes Zi. The combination doesn't exist. Read the clash instead. This seems obvious but is the most common reading error. People see a combination and build an interpretation, forgetting that the chart might contain its cancellation. Clashes override combinations in branches. The loudest force wins.
The produced element is the real outcome : Don't fixate on the combining branches. Track what they produce. Chen酉→ Metal: the real question is whether metal benefits the Day Master. If the Day Master is strong wood, metal (the officer) arriving from a combination is a breakthrough — authority emerges from a mentoring relationship. If the Day Master is weak wood, that same metal cuts them down. Same combination, opposite result. The branches themselves are the vehicles. The produced element is the destination. Always read destination before origin.

Common Questions

Q: Can a branch combine with two other branches at once?

No — a single branch can only combine with one partner. If Zi sits between two Chou branches, Zi combines with the closer Chou (adjacency rule applies to branches too). The other Chou forms no bond. If the two Chou are equidistant, neither combination completes — Zi is pulled in two directions and does nothing. This is争合(contending combination) in branches: energy diverted, outcome zero. In practice, a Day Branch under such contest means the person is desired by two parties but claimed by neither. Better to have one real bond than two theoretical ones.

Q: Which combination is strongest — passion (Mao戌) or grace (Zi丑)?

Different kinds of strong. Mao戌burns — fastest transformation, highest intensity, shortest duration. This combination changes the element quickly but can't sustain. The fire flares and dies. Zi丑freezes — slowest transformation, lowest intensity, longest duration. The earth settles and stays. Mao戌in a ten-year luck cycle: dramatic three years then nothing. Zi丑in the same cycle: gradual shift over the full decade. Choose passion for speed, grace for permanence. Neither is better. They serve different charts.