How Four-Pillar Life Periods Are Divided (四柱限運)
Understand pillar life-period divisions as school-specific overlays, how to document age boundaries, and why they cannot replace Luck Pillars or real chronology.
Overview
Four-pillar life-period division assigns broad portions of a life to the Year, Month, Day, and Hour positions. There is no single age table inherent in the eight characters, and schools may use different boundary ages or interpretive aims. A defensible use names the source, exact age convention, inclusive boundaries, and whether age is counted nominally or chronologically, then keeps the overlay separate from Luck Pillars and annual timing.
At a glance
- Positions
- Year, Month, Day, and Hour Pillars
- Method type
- School-specific interpretive overlay
- Required disclosure
- Source, age system, and exact boundaries
- Separate timing
- Luck Pillars and annual pillars
- Limit
- No universal age table
- Age convention
- State nominal or actual-age counting
Start with a named source and purpose
Some systems use the four positions as a broad early-to-late sequence, while others attach exact age spans. These are added conventions rather than a value calculated from the stem-branch pair itself.
Record the author, school, edition, and whether the method is teaching shorthand, retrospective framing, or a timing technique.
- Cite the selected convention.
- Do not merge incompatible age tables.
Define every age boundary reproducibly
State the first and last age assigned to each pillar, whether endpoints are inclusive, and whether East Asian nominal age or elapsed age is used. A one-year ambiguity can otherwise move a claim to another pillar.
Birthdays, solar years, lunar years, or Luck-Pillar start ages are different clocks. The page must not switch clocks mid-analysis.
- Publish exact intervals.
- Use one declared age-counting system.
Cross-check the overlay against real timing systems
A life-period pillar remains part of the natal chart; it does not become a moving Luck Pillar. Compare it with the actual Luck Pillar, annual pillar, and relevant natal relations for the period in question.
If the systems point in different directions, preserve the discrepancy rather than selecting whichever produces a better story.
- Keep natal position and moving pillar distinct.
- Record agreement and disagreement.
Do not promise events at boundary ages
An age division cannot guarantee marriage, children, illness, wealth, career change, or death in a period. Broad position language has limited resolution.
Use real plans, records, and professional advice for consequential decisions. Present the method as a traditional interpretive overlay with uncertainty.
- No event guarantee from an age band.
- Do not use the method for risk diagnosis.
Sources and editorial basis
- 《淵海子平》 (Yuanhai Ziping)「看命入式」以年月日時提供先後生命語境，但未建立跨流派一致的唯一現代年齡分段表A foundational Ziping reference for branch months, hidden stems, roots, and stem-branch relationships.
- 《三命通會》 (Sanming Tonghui)卷二與歲運諸論分別處理原局柱位及移動干支，支持柱位限運不能直接當作大運或流年A historical compilation covering stems and branches, Ten Gods, Nayin, Shen Sha, and multiple classical pattern systems.
- OpenFate Editorial Methodology限運頁要求來源、每段起訖、端點是否包含及虛歲或實歲口徑，並排除按年齡帶保證婚育、疾病、財富、職涯或死亡事件OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.