---
type: Index
title: "One Person, Three Systems (一人三盤對照)"
description: "Reading one birth chart through the Palm Sutra, Zi Wei Dou Shu and BaZi at once — where they agree, where they diverge, and why divergence is the more useful answer."
resource: https://localpapa.com/tools/triad.html
category: "Triad Reading"
tags: [triad, yizhang, ziwei, bazi, comparison]
timestamp: 2026-08-26T00:00:00Z
---

# One Person, Three Systems · 一人三盤對照

This tool maps the Palm Sutra, Zi Wei Dou Shu and BaZi onto one set of seven life domains, then shows where each points at three layers: the natal chart, the current decade, and the current year. All three engines are the site’s existing ones, taking exactly the same input (Gregorian birth date, hour and sex), computed entirely in the browser. **No overall score or "accuracy" figure is produced** — the vocabularies can be compared, but adding interpretations into a single number hides the uncertainty behind a decimal point. The page reports only which systems point where and on what grounds, and prints the mapping table itself for checking.

本工具把達摩一掌經、紫微斗數與八字三套系統映到同一組七個生活領域上，再看它們在本命、大限／大運、流年三個層級上分別指向哪裡。三支引擎都是站上既有的，輸入完全相同（國曆生日、時辰、性別），全程瀏覽器本地運算。**本工具不合成任何總分或吻合度**——三套系統的詞彙可以對照，但把詮釋加總成一個數字，是把不確定性藏進小數點裡。畫面上只報告「哪幾套指向哪一塊，依據是什麼」，對照表也一併印出供檢查。

## Why not simply read three reports

Three reports side by side contain no more than the three of them separately. Two things only a comparison can produce:

1. When three systems, reasoning by entirely different machinery, land on the same area of life, that carries a weight no single reading does.
2. When they land in different places, **the divergence itself is the finding** — "the palaces say career, the ten gods say money, the pillars say family" is a sentence no single system can produce.

## The two positions this tool takes

- **Having no vocabulary is not disagreement.** At the natal layer the Palm Sutra has four pillars and no mechanism that points at wealth or peers on its own. Counting "did not mention" as "disagrees" would systematically favour the system with the most palaces. Every domain therefore records which systems are *able* to speak to it, and agreement is only counted among those.
- **The mapping is this tool’s interpretation, not classical doctrine.** Whether the Friends palace counts as career, whether Indirect Resource counts as study — readings differ. The mapping table is printed on screen for checking, and **no "accuracy" or "match" figure is produced**: adding interpretations into one number hides the uncertainty behind a decimal point.

## Pages

- [The seven domains](./domains.md) — 七個生活領域 (the shared coordinate)
- [The mapping table](./mapping.md) — 對照表與逐條理由
- [The three layers](./layers.md) — 本命、大限／大運、流年

Cast a chart at <https://localpapa.com/tools/triad.html>.

---
*Individual systems: [Palm Sutra](../yizhang/index.md) · [Zi Wei Dou Shu](../ziwei/index.md) · [BaZi](../bazi/index.md) · [LocalPapa knowledge base](../index.md)*