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BaZi and Four Pillars Guides

Clear, source-conscious explanations of BaZi chart structure, birth-time handling, luck cycles, compatibility, and the boundary between calculation and AI interpretation.

Suggested learning path

Build the structure before making judgments

The knowledge center follows a learning sequence. If you are new to BaZi, move from core ideas to chart timing, structural relationships, and dynamic application instead of memorizing conclusions first.

  1. Core ideasLearn the pillars, Day Master, month branch, and chart-versus-luck distinction.
  2. Time and calculationVerify birth data, time zones, solar terms, and solar time.
  3. Structure and relationshipsConnect Ten Gods, strength, climate, pattern, and compatibility.
  4. Dynamics and applicationAdd luck cycles and verify AI explanations.
  1. 01What Is BaZi? Understand the Four Pillars Before the ReadingBaZi converts birth year, month, day, and hour into four stem-branch pillars. The useful starting point is understanding the Day Master, month branch, Five Phase relationships, and luck cycles as one system.Read guide
  2. 02What Birth Data Does a BaZi Chart Need? Preserve the Original RecordA reliable chart needs the birth date, local clock time, birthplace, and calendar source. Preserve the original record before time-zone, daylight-saving, or solar-time corrections.Read guide
  3. 03Time Zones, Daylight Saving, and Solar Terms: The Correct OrderNormalize historical civil time first, then evaluate calendar and solar-term boundaries, and only then consider solar time. A wrong order can shift the month, day, or hour pillar.Read guide
  4. 04True Solar Time in BaZi: When Does It Change the Chart?True Solar Time adjusts civil clock time using birthplace longitude and the equation of time. It changes a pillar only when the corrected result crosses an hour or date boundary.Read guide
  5. 05BaZi Without an Exact Birth Time: Separate What Is Known from What Is NotAn unknown hour does not invalidate the whole chart. The first three pillars may remain calculable, while the hour pillar and dependent claims must stay explicitly uncertain.Read guide
  6. 06What Are the Ten Gods in BaZi? A Language of RelationshipsThe Ten Gods classify each stem's Five Phase and yin-yang relationship to the Day Master. They describe functions in a chart, not literal deities or fixed personality types.Read guide
  7. 07How to Read Da Yun and Annual Fortune: Natal Structure FirstDa Yun provides a longer stem-branch background and the annual pillar a shorter trigger. Their meaning comes from how they interact with the natal chart's strength, climate, pattern, and relationships.Read guide
  8. 08BaZi Compatibility: Compare Two Structures, Not One ScoreA useful compatibility reading first understands each chart, then compares needs, Ten God relationships, stem-branch interactions, and timing. One score cannot explain how a relationship works.Read guide
  9. 09BaZi in the Southern Hemisphere: Do Not Reverse the Seasons by DefaultUse the local date, historical time zone, and the same solar-term instant. Reversing the month branch by season is a school-specific choice and should never happen without disclosure.Read guide
  10. 10AI BaZi Interpretation vs. Chart Calculation: What Is the Difference?Chart calculation converts birth data into pillars through explicit rules. AI interpretation converts the calculated structure into language. The first should be reproducible; the second requires evidence and uncertainty checks.Read guide
  11. 11Why General AI Can Miscalculate BaZi: A Verification ChecklistLanguage models generate explanations well but do not inherently execute historical time-zone, solar-term, stem-branch, or luck-cycle algorithms. Use testable calculation first.Read guide