Method · what is actually claimed
The honest answer has two halves. Half of what a chart is made of is arithmetic, and arithmetic can be checked by anyone. The other half — what a chart is supposed to mean about a life — cannot be checked at all, and this site does not sell it.
| Layer | What it is | Checkable? |
|---|---|---|
| Calendar layer | lichun instants, when the cycle turns, the continuous day count | Yes — objective |
| Convention layer | month-pillar double weight, hidden stems at half weight, the late-Zi roll-over | Yes — for consistency and disclosure |
| Reading layer | what a chart means about a person | No |
The numbers below are computed from the repository at build time, not self-assessed. They are evidence of engineering reproducibility, not of divinatory validity — and that distinction matters.
| Item | Value |
|---|---|
| Engine version | v0.15.1 |
| Published convention codes | 34 (each one has a methodology card) |
| Regression suites | 11 |
| Lichun table | 201 years (1900–2100） |
| Boundary windows | lichun lands on 3 / 4 / 5 February, 3 possible dates |
Blending the two halves is the easiest and least honest thing to do in this field: borrow the credibility of a checkable fact, such as lichun falling at 04:02 on 4 February, to underwrite a claim that cannot be checked at all. This site hands over the checkable part — take it and verify it — and labels the uncheckable part explicitly, here and in the disclaimer, with no grey zone in between.
A note on what this page deliberately does not do: the popular versions of this material assign a fixed personality to each term — one character per branch, one destiny per stage. This site rejects that framing. What is published here is a structural position: which element sits where, on what kind of ground, with which tenants inside. The same term reads differently under a different month command, and no meaningful judgement exists without the other characters of the chart. Where the tradition offers a reading it is labelled as the tradition's; this site's own contribution is that every number and term on this page is computed, versioned and checkable against the methodology page.
These are the questions specific to this page; broader conventions live on the methodology page.
Every enumerable component of ba zi has its own page here. Each page is computed by the same engine and can be checked item by item — none of it is a personality table.