Heavenly-Stem Combinations in Bazi Compatibility
Identify cross-chart stem pairs, distinguish a combination relation from transformation, retain direction and natal ownership, and avoid attraction or marriage shortcuts.
Overview
Heavenly-Stem combinations in Bazi compatibility (合婚中的天干相合, Hé Hūn Zhōng De Tiān Gān Xiāng Hé) identify one of the five recognized pairs across two charts: Jia–Ji, Yi–Geng, Bing–Xin, Ding–Ren, or Wu–Gui. The presence of a pair establishes a combination relation under the selected table; it does not by itself establish transformation into Earth, Metal, Water, Wood, or Fire. Record each stem’s chart, pillar, polarity, Ten-God direction, natal roots, Month Command, competing combinations, and structural function. Cross-chart contact does not merge the two natal charts or prove attraction, agreement, marriage, fidelity, or permanence.
At a glance
- Five pairs
- Jia–Ji, Yi–Geng, Bing–Xin, Ding–Ren, Wu–Gui
- First conclusion
- A named combination relation is present
- Separate question
- Transformation requires additional disclosed evidence
- Evidence owner
- Each stem remains in its own chart and pillar
- Context
- Roots, season, structure, competition, Ten-God direction
- Cannot prove
- Attraction, agreement, marriage, fidelity, permanence
Identify the exact pair and evidence owner
List both participating stems, their charts, pillars, and whether either already combines or conflicts inside its own natal chart. Do not report a generic “stems combine” label without the pair.
Calculate the Ten-God direction from each Day Master separately. A cross-chart pair is a comparison contact and does not relocate either stem into the other chart.
- Name both stems and pillar positions.
- Preserve chart ownership and both directions.
Separate combination from transformation
The recognized pair supports a combination-relation statement. A transformation claim needs a declared school rule and evidence concerning season, roots, support, obstruction, and competing relations.
Because the stems belong to different natal charts, do not import an intrachart transformation rule without explaining how the method treats cross-chart contact. When the method is silent, stop at relation.
- Never infer transformation from the pair alone.
- State when cross-chart transformation is unsupported.
Return the pair to two complete natal structures
Review Month Command, roots, revealment, strength, structure, useful functions, and existing natal contacts for both stems. A stem can already be constrained, supported, or contested in its own chart.
Compare spouse palaces, Day Pillars, other branch relations, and timing independently. Preserve counterevidence instead of allowing one stem pair to dominate the report.
- Complete two natal context checks.
- Show competing and contradictory evidence.
Do not equate a stem combination with romantic union
A combination does not prove attraction, emotional agreement, sexual compatibility, commitment, marriage, fidelity, reconciliation, or duration. It cannot reveal either person’s intentions.
Use it as one technical contact alongside direct communication, consent, conduct, and shared plans. Do not approve or reject a relationship because a five-combination pair is present or absent.
- Avoid “destined match” language.
- Keep real choices outside the combination rule.
Sources and editorial basis
- 《三命通會》 (Sanming Tonghui)《三命通會》甲己、乙庚、丙辛、丁壬、戊癸五合與化氣材料支持先核對參與天干，再將有合與成化分為兩個判斷A historical compilation covering stems and branches, Ten Gods, Nayin, Shen Sha, and multiple classical pattern systems.
- 《滴天髓》 (Dripping Heavenly Marrow)《滴天髓闡微》月令、根氣、全局氣勢、體用、制化與爭合原則支持合化必須核對原局條件，不能只看一組干合A core later text on Bazi balance, seasonal strength, and relational reading.
- OpenFate Editorial Methodology跨盤天干相合頁保留命盤歸屬、柱位、雙向十神與原局競合，未定義跨盤合化時停在關係結論，禁止吸引、婚姻、忠誠與長久推論OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.