Tie Ban Shen Shu — Seven-Step Calculation Method (鐵板神數推算七步驟)
Tie Ban Shen Shu (鐵板神數), the Iron Plate Divine Numerology, differs from all other Chinese fate-calculation systems in its approach: rather than interpreting elemental patterns analytically, it performs a series of mathematical transformations on the birth data to produce a precise index into a pre-compiled table of 12,000 life-narrative clauses. The result is a fixed Ming Shu (命書, Life Book) narrating the entire arc of a person's destiny. The calculation proceeds in seven structured steps.
Step 1 — Establish the Four Pillars (立四柱 Lì Sì Zhù)
The first step is identical to standard BaZi charting: convert the subject's birth year, month, day, and hour into the Four Pillars (四柱) using the Chinese solar calendar, yielding the Eight Characters (八字 Bā Zì). Each pillar consists of a Heavenly Stem (天干 Tiān Gān) and Earthly Branch (地支 Dì Zhī).
- Nian Zhu (年柱): Year Pillar — Stem + Branch of the birth year
- Yue Zhu (月柱): Month Pillar — determined by the 24 Solar Terms
- Ri Zhu (日柱): Day Pillar — Day Stem is the subject of the reading
- Shi Zhu (時柱): Hour Pillar — one of 12 double-hours (時辰)
Step 2 — Numerize the Pillars (化數 Huà Shù)
Every Heavenly Stem and Earthly Branch is converted to its corresponding He Luo Li Shu (河洛理數) numerical value — the Rational Numbers of the River Map (He Tu 河圖) and Luo Writing (Luo Shu 洛書). This step transforms the qualitative symbols of the BaZi into a set of eight base numbers that can undergo mathematical processing.
Heavenly Stem values (Northern School): Jia=9, Yi=8, Bing=7, Ding=6, Wu=5, Ji=10, Geng=9, Xin=8, Ren=7, Gui=6. Each school assigns values somewhat differently; the Southern School may use Xian Tian Ba Gua numbers instead.
Step 3 — Apply the Kao Ke Formula (考克推算 Kǎo Kè Tuī Suàn)
The double-hour is divided into eight Ke (刻) — sub-divisions of approximately 15 minutes each. Using school-specific formulas involving addition, multiplication, and division with remainders, and adjusting for the subject's gender (male=Yang, female=Yin), the practitioner reduces the calculation to the level of a specific ke. This is the key individualization step: two people born in the same hour on the same day will have different Life Books if their birth minutes differ across a ke boundary.
Step 4 — Derive the Hexagram Sequence (求卦序 Qiú Guà Xù)
From the numerized, ke-adjusted base values, a sequence of hexagrams is derived using Shao Yong's Xian Tian (先天, Prior Heaven) ordering principles. This involves:
- Dividing the adjusted total by 8 to obtain trigram values via remainder
- Combining upper and lower trigrams to form complete hexagrams
- Applying moving-line (變爻 Biàn Yáo) transformations to derive secondary hexagrams
Each derived hexagram corresponds to a specific domain of life: Qian (Heaven/Heaven) governs status and the father's fate; Kun (Earth/Earth) governs the mother and property; Gui Mei (Thunder/Lake) governs marriage; Jia Ren (Wind/Fire) governs family harmony; and so on across all 64 hexagrams.
Step 5 — Index into the Clause Table (查條文 Chá Tiáo Wén)
Each derived hexagram and associated line number points to a specific range within the 12,000-clause (條) table. The practitioner looks up the indicated clauses and assembles them into the life-reading sequence. Example clause types include:
- Appearance: "This fate: square face with large ears, nature upright and firm"
- Marriage timing: "When the Marriage Star stirs, at twenty-seven years one weds a worthy spouse"
- Career: "Examination success arrives in a Wu or Wei year"
- Children: "Fated to have three sons who attend the funeral rites"
- Death: "At seventy-three, life ends peacefully at home"
Step 6 — Verification via Kao Liu Qin (考六親 Kǎo Liù Qīn)
Before finalizing the reading, the practitioner performs the Six Relations Verification — the famous interactive questioning of the subject. The Six Relations are: Fu (父, father), Mu (母, mother), Xiong Di (兄弟, siblings), Qi/Fu (妻/夫, spouse), Zi Nv (子女, children), and Zi Shen (自身, self). Each ke value produces a different set of predicted answers for these six categories. The practitioner tests different ke values until all six verifications align simultaneously. See the dedicated Kao Ke module for full detail.
Step 7 — Compile the Life Book (編命書 Biān Míng Shū)
Once the correct ke is identified and all verifications pass, the selected clauses are written out in sequence — traditionally in elegant calligraphy — to form the subject's personal Ming Shu (命書, Life Book). This document is presented as a scroll or bound booklet narrating the life from birth to death in fixed, specific terms. Unlike Ba Zi or Zi Wei Dou Shu interpretations, the Ming Shu clauses are not analyst-dependent — they are deterministic outputs of the numerical calculation.
Sample Number Conversion (Simplified)
For a male born in Jia Zi year, 8th month, 15th day, Wu hour (11:00–13:00): Year number = Jia(9) + Zi(1) = 10; Month number = Ren(7) + Shen(9) = 16; Day number = Ding(6) + Wei(8) = 14; Hour number = Bing(7) + Wu(7) = 14. Base total = 54. This number undergoes school-specific transformations involving Xian Tian constants and division by hexagram-cycle numbers (64, 384, or 4096), with remainders pointing to hexagrams and clause numbers. The actual lineage-internal formulas are closely guarded.