Jia-Ji Combination into Earth (甲己合土)
Learn when Jia and Ji form a Heavenly-Stem combination, what evidence is required for Earth transformation, and why the pair may remain combined without transforming.
Overview
Jia–Ji Combination into Earth (甲己合土) is one of the Five Heavenly-Stem Combinations. The presence of 甲 and 己 establishes a candidate relation, not an automatic change into Earth. Read position and distance first, then test Earth-supporting season and roots, competing combinations, clashes, the original roots of both stems, and whether the chart can sustain the proposed transformation.
At a glance
- Pair
- Jia Wood and Ji Earth
- Proposed phase
- Earth
- First result
- A combination relation, not automatic transformation
- Support
- Earth season, roots, exposure, and chart continuity
- Blockers
- Competing partners, clashes, original roots, or counterforce
- Boundary
- No automatic personality, marriage, wealth, health, or event claim
Identify the Jia–Ji contact before judging transformation
Locate 甲 and 己, record their pillars, and distinguish an adjacent contact from a distant Year–Hour pairing. A visible pair may be registered even when distance makes it weak.
Keep each stem’s original element, roots, and Ten-God role in the evidence map. The pair name alone does not erase Wood or Earth functions.
- Record both stems and their positions.
- Separate contact from transformation.
Require a coherent Earth pathway
Test whether the Month Command, seasonal climate, Earth roots, and visible or hidden Earth support allow the proposed phase to become operational.
Compare that support with Jia’s surviving Wood roots, moisture and growth conditions, and any force that prevents the pair from reorganizing around Earth.
- Season is necessary context, not a slogan.
- Preserve counterevidence from the original stems.
Audit competition, damage, and timing
A second Jia or Ji may create competing or jealous combination paths. Clashes, other combinations, and blocked access can leave the pair merely combined or bound.
When a Luck Pillar or year supplies the missing support, report it as a time-bounded change and restore the natal baseline when that layer ends.
- Show every rival path.
- Give period evidence an expiry.
Do not translate Earth transformation into life events
甲己合土 does not prove trustworthiness, land ownership, marriage, pregnancy, profit, digestive health, or a particular occupation.
Those conclusions require direct real-world evidence; the chart page should state only the technical relation and its conditions.
- No character typing from one pair.
- No medical or financial inference.
Sources and editorial basis
- 《三命通會》 (Sanming Tonghui)《三命通會》卷二十干合化：列甲己合土，並以月令、化神得時得地、日干根氣及妒合等條件辨相合與成化A historical compilation covering stems and branches, Ten Gods, Nayin, Shen Sha, and multiple classical pattern systems.
- 《子平真詮》 (True Explanations of Ziping)《子平真詮評註》「論十干合而不合」：干合仍須察遠近、競合與原有作用，見合不等於原干作用盡失A major reference for month-command, structure, and contextual Bazi interpretation.
- OpenFate Editorial Methodology甲己合土頁依引擎邊界把配對偵測、相合效力與合化結果分層，化土前保留甲己原始五行、十神及根氣OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.