Mystilink Wiki

BaZi (Four Pillars)

bazi · overview · BaZi

BaZi (Four Pillars) marks year, month, day, and hour with Heavenly Stems and Earthly Branches. The day stem is the Day Master, from which Ten Gods, chart patterns, and luck cycles unfold. It is strong at long-term structure and staged fortune, complementary to one-question methods.

Suggested reading path

  1. Foundations: Stems and Branches · Five Elements · Calendars
  2. Methods (chart first, then judge): Four-Pillar Charting → Deriving Ten Gods → Deriving Luck Cycles → Reading Order
  3. Concepts: Four Pillars · Day Master · Ten Gods
  4. Tables and rules: Ten Gods Matrix · Zi Hour Day Change · True Solar Time
  5. Term index

The system directory below lists every BaZi page in this library.

Related

In this system

Concepts

  • Annual PillarThe yearly stem–branch layer stacked on the natal chart and luck cycle.
  • Day MasterThe day-pillar Heavenly Stem; the central reference for favorable/unfavorable judgments and Ten-God relations.
  • Four PillarsYear, month, day, and hour stem–branch pairs that form the skeleton of a BaZi chart.
  • Hidden StemsHeavenly Stems stored inside Earthly Branches; they affect rooting and the quality of revealed stems.
  • Luck CycleStaged luck stems and branches arranged forward or reverse from the month pillar, roughly one step per decade.
  • Na YinAn auxiliary Five-Element mapping attached to the sixty Jiazi pairs.
  • Ten GodsA system that classifies other Heavenly Stems into ten relational symbols from the Day Master by generation/control and yin/yang.
  • Useful GodWithin a given pattern, the Five-Element or Ten-God orientation most valuable for supporting, restraining, or climate-adjusting the Day Master—a working hypothesis in deduction.

Terms

  • Bi Jian (Peer)Another stem of the same Five Element and same yin/yang as the Day Master; often linked to peers, self-reliance, and shared resources.
  • Jie Cai (Rob Wealth)Another stem of the same Five Element but opposite yin/yang to the Day Master; often linked to contest, collision, and risk of drain.
  • Pian Cai (Indirect Wealth)A stem the Day Master controls with the same yin/yang; often linked to flowing income, opportunistic gains, and outward resources.
  • Pian Yin (Indirect Resource)A stem that generates the Day Master with the same yin/yang; often linked to unconventional learning, atypical paths, and intuitive thinking.
  • Qi Sha (Seven Killings)A stem that controls the Day Master with the same yin/yang; often linked to pressure, drive, unconventional constraint, and pioneering.
  • Shang Guan (Hurting Officer)A stem the Day Master generates with opposite yin/yang; often linked to outward talent, critique, and impact on constraints.
  • Shi Shen (Eating God)A stem the Day Master generates with the same yin/yang; often linked to expression, talent, nourishment, and steady talent-drain.
  • Zheng Cai (Direct Wealth)A stem the Day Master controls with opposite yin/yang; often linked to stable income, managed savings, and predictable resources.
  • Zheng Guan (Direct Officer)A stem that controls the Day Master with opposite yin/yang; often linked to restraint, office, rules, and stable responsibility.
  • Zheng Yin (Direct Resource)A stem that generates the Day Master with opposite yin/yang; often linked to learning, protection, credentials, and stable support.

Tables

Rules

  • Luck Cycle Forward/ReverseYear-stem yin/yang and sex determine whether luck cycles run forward or reverse, linked to starting-age calculation.
  • True Solar TimeCorrect clock time to local apparent solar time using longitude and the equation of time to reduce hour-pillar error.
  • Zi Hour Day ChangeRule split on whether early and late Zi hour belong to the day’s pillar, with decision steps and recording norms.

Methods

  • Chart Deduction and Reading OrderRecommended deduction order from four-pillar structure through Useful-God orientation to luck cycles and annual pillars, and the question each layer should answer.
  • Common BaZi Chart FieldsMeanings of chart and deduction fields, how they are produced, and how to use them when reading.
  • Deriving Luck CyclesDetermine luck-cycle forward/reverse from month pillar, year-stem yin/yang, and sex; compute starting age and decade handovers.
  • Deriving Ten GodsStepwise algorithm that maps other stems and branches to Ten Gods from the day stem by Five-Element generation/control and yin/yang sameness.
  • Four-Pillar Charting MethodFull steps from Gregorian birth moment to year, month, day, and hour pillars, plus common branch rules.
  • Ten-God Combinations and Luck TechniquesStructural readings of common Ten-God combinations, plus a checklist when stacking luck cycles and annual pillars.

Indexes

  • BaZi Term IndexEntry points to core BaZi terms, methods, tables, and rules.