Four Pillars · Same-pillar relation

Stem-Branch Relationship Within One Pillar

Analyze how a pillar stem relates to its branch and hidden stems through generation, control, rooting, seating, season, and cross-pillar conditions.

Simplified Chinese
同柱干支关系
Traditional Chinese
同柱干支關係
Pinyin
Tóngzhù Gānzhī Guānxì
Also known as
same-column stem-branch relation · stem sitting on branch

Editorially reviewed:

Overview

A same-pillar stem-branch relationship compares the visible Heavenly Stem with the Earthly Branch beneath it and, more precisely, with the branch’s hidden stems. The column may provide a root, generation, drain, control, or mixed interaction. Traditional “sitting on” descriptions summarize this local arrangement, but they cannot determine the pillar’s quality without season, strength, other pillars, and simultaneous relations.

At a glance

Visible component
Pillar stem
Lower component
Pillar branch
Precise comparison
Stem against each hidden stem
Possible functions
Root, generation, drain, or control
Critical modifiers
Season and cross-pillar relations
Limit
No fixed pillar grade from seating alone

Unpack the branch before naming the relation

A branch can contain one, two, or three hidden stems. Comparing only its headline Five Phase with the visible stem can miss the actual root or competing relation inside it.

List each hidden stem, its Ten God relative to the Day Master, and its seasonal availability.

  • Do not treat a branch as empty beneath the stem.
  • Keep primary and secondary hidden qi distinct.

Use seating language as a compact description

Phrases such as “sits on Resource,” “sits on Wealth,” or “has a root” describe a local relationship within the column. They do not replace the full Ten God and strength analysis.

The same sexagenary pair can function differently in Year, Month, Day, or Hour and under different seasons.

  • Name the exact hidden relation.
  • Include pillar position and month command.

Reject isolated sixty-pillar rankings

A pillar pair is a technical calendrical object, not a universal score for character, marriage, career, or fortune. Later ranking lists use school-specific assumptions.

Interpret local structure as one evidence unit within all four pillars and timing, with safe boundaries for high-stakes claims.

  • Do not label a pillar inherently lucky or unlucky.
  • Avoid event predictions from one pair.

Sources and editorial basis

  1. 《三命通會》 (Sanming Tonghui)
    卷二分論干支上下生剋、坐支與藏氣,支持同柱關係須同時看表層干支與支中根氣A historical compilation covering stems and branches, Ten Gods, Nayin, Shen Sha, and multiple classical pattern systems.
  2. 《淵海子平》 (Yuanhai Ziping)
    「看命入式」以各柱干支配合月令與日主,不把同柱相生相剋直接判成吉凶A foundational Ziping reference for branch months, hidden stems, roots, and stem-branch relationships.
  3. OpenFate Editorial Methodology
    同柱關係記錄直接接觸但不跳過季節、強弱、藏干與全局制化,也不轉譯成確定事件OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.
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