BAZI KNOWLEDGE BASE
How Is Nayin Derived? Separate Stable Lookup from Historical Rationale
The reliable modern operation is to place a complete Jiazi in the received sixty-Jiazi table. Older texts also preserve pitch, rotating-mode, numerical and Five-Phase explanations. These show historical rationales, but they are not one identical modern algorithm shared by every source.
Operational layer: a complete Jiazi maps to one fixed row
甲子 is first in the sixty-Jiazi cycle and shares Gold in the Sea with 乙丑. 丙寅 and 丁卯 follow as Fire in the Furnace. Adjacent pairs continue through sixty entries to produce thirty names.
The input is one stem and branch from the same pillar. An animal sign supplies only the branch, and a stem alone is also insufficient. The complete table is the final check for any mnemonic, remainder method or software output.
| Cycle position | Complete Jiazi | Nayin |
|---|---|---|
| 1 | 甲子 | Gold in the Sea |
| 2 | 乙丑 | Gold in the Sea |
| 3 | 丙寅 | Fire in the Furnace |
| 4 | 丁卯 | Fire in the Furnace |
Historical layer: more than one rationale explains Nayin
Sanming Tonghui volume 1 compiles pitch, cycle, rotating-mode and numerical explanations, then separately gives images for the named pairs. Wuxing Jingji also preserves numerical lookup and three-yuan passages. They document transmission without turning every cosmological account into one algorithm.
A page should say whether it supplies the result table, explains one classical rationale or reconstructs a later mnemonic. Blending those tasks hides which step can be reproduced.
How should a shortcut be validated?
Check that all sixty Jiazi receive exactly one result, every name covers one adjacent pair, all five Nayin (a separate named element classification for a complete pair of chart symbols) phases match the adopted table, and samples span the cycle rather than clustering at its start.
Two or three matching examples do not validate a complete formula. If a shortcut conflicts with the full table, disclose the conflict and return to the declared version instead of changing the Jiazi result to preserve the mnemonic.
Does historical derivation prove modern effects?
No. Derivation explains how historical authors organized Jiazi and Five-Phase categories; it does not demonstrate prediction of real outcomes. Source history, calculation consistency and empirical effect are separate questions.
Continue reading
- Complete sixty-Jiazi table
Verify the result against the full table.
- Complete Nayin workflow
Return derivation to practical use.
- How Nayin methods declare their rules
Avoid blending historical rationales.