紫zǐ微wēi斗dǒu數shù · Purple Star Astrology

The Palace Map Behind Your Primal Mirror

Purple Star Astrology, also known as Zi Wei Dou Shu, maps one birth moment into twelve palaces, fourteen principal stars, and four transformations. Your Zodi Animal names the creature. Purple Star shows the court it walks through.

This page teaches you to read the whole court, in order: room by room, star by star, the way the old court offices did.

Court Novice · Level 1 of 8
Enter the 12 Palaces Begin the Reader's Path

A beginner-friendly guide to the rooms, stars, forces, triangles, and timing gates of Purple Star Astrology.

Purple Star Astrology, also known as Zi Wei Dou Shu, is a Chinese birth chart system that maps a person's life into twelve palaces, fourteen principal stars, and four transformations. This guide teaches the system step by step for Western readers: first the rooms, then the stars, then the palace triangle, then timing.

What you will learn

Your Zodi Animal gives you the living symbol. Purple Star gives you the palace map behind it. One names the creature. The other shows the court it walks through.

The use of a map

What Purple Star Can Show You

Purple Star Astrology is for the shape of a life, not the mood of a day. Ask the court and it answers in tendencies: which life rooms tend to carry authority, where pressure gathers, where luck flows, what repeats, where conflict or inheritance sits, which strengths stay hidden until someone names them.

It does not replace choice. It hands you a map for asking better questions — of the chart, and of yourself. The chart is a map, not a prison.

Learning track Below: learn to read any chart, step by step, with a fully worked example. Add your birth date above for a reading of your own first — the method is the same.

The structure

The Twelve Palace Court

A chart is twelve rooms read together. Select a room to hear its question and watch the rooms that answer with it light up: two triangle partners and one mirror across the court.

Loading the court…

Twelve rooms, one geometry. The figures who live in them come next.

Meet the principal stars
The figures

Meet the fourteen principal stars

The teaser let you move one star through one room. Here is the grown-up version: any of the fourteen stars, any room, with the reading layered from a beginner's sentence down to a reader's note. A star's meaning is read across three rooms and its mirror, never one.

Drag a star into a room, or tap a star and then a room.

Pick a star to begin.

One placement is never the reading. The court answers together.

Every star bends to its room.

Open the Four Transformations
The forces

The Four Transformations

化huà祿lù the Flow, 化huà權quán the Power, 化huà科kē the Shine, and 化huà忌jì the Hook. A birth-year stem re-colors four stars. Set a year or pick a stem and watch which four stars each force flies to. The forces attach to stars, not rooms.

For study orientation. A full chart needs complete birth data.

Forces attach to stars. Structure attaches to rooms.

Read the Triangle
The geometry

Read the Triangle

三sān方fāng四sì正zhèng Sān Fāng Sì Zhèng, taught by toggling rather than by paragraph. This is Mei's Career room. With every companion you add, watch the reading grow more careful and more accurate.

Reading with 1 of 4 rooms.

A verdict needs more than one room.

Write a chart sentence
The reading

Build a chart sentence

Pick a star, a room, and, if you like, a transformation. Write the reading in your own words, then compare with how a beginner and a practitioner would put it, and see what evidence a full reading would still need. Your words are never scored by machine; the comparison is yours to make.

Pick a star and a room first.

Sentences become readings when time enters.

Open the timing model
The clock

Decade Doors and the Year Wave

Decade Doors 大dà限xiàn and the Year Wave 流liú年nián This model assumes you know the palaces and the triangle. Start there if you have not. The control below always works.

Mei's chart runs a Fire Bureau, so her first Decade Door opens at age 6. Enter an age to open its door; the Year Wave shows where 2026 lands.

Three clocks, never one

You will meet three timing systems on this site. They are different calculations from the same birth moment, and this hub never blends them.

The almanac

Rates the day for everyone: lunar date, solar term, the Twelve Day Officers. Inherited calendar lore, a different system with different math.

See today's almanac
BaZi luck pillars

BaZi also walks life in ten-year turns, counted from the month pillar instead of the Bureau. Two clocks that happen to share a tick.

See BaZi's luck pillars
Your decade doors

The almanac rates the day for everyone. Your decade doors belong to your chart alone. Two clocks, two calculations, no mixing.

You are reading this one

Method beats memory.

Walk a full reading in the Reader's School
Five doors

Explore the court

Each door below opens one full room of study. Take them in this order and the system builds itself.

The capstone

The Reader's Path

The summit is not a certificate. It is the ability to teach the foundations in plain English and to read a chart responsibly. Practice the teach-backs, learn the phrasebook, then sit the Imperial exam.

Teach it back

Pick a prompt, write your answer, then reveal the model answer and score yourself honestly. The model teaches; it does not grade you.

Pick a prompt and write at least a few sentences.

The Imperial exam

Twenty questions across the whole path. Score 18 or better, with your teach-backs submitted, and the store seats you as Imperial Astrologer. Retakes are always open, no cooldown.

The Reader's Path

Your path

Eight levels, from naming the parts to reading a whole chart responsibly. Nothing here is locked and no account is needed. Take them in order and the system builds itself.

    Among the systems

    BaZi and Zi Wei Dou Shu

    Both grow from the same cosmological tradition. Both begin at your birth moment. They answer different questions.

    八bā字zì · Four Pillars BaZi

    Element flow, seasonal balance, energetic timing. The climate you were born into, and how it tends to move.

    紫zǐ微wēi斗dǒu數shù · Purple Star Purple Star Astrology

    Palace placement, star characters, life domains, chart relationships. The rooms of a life, and how they answer each other.

    BaZi tells you the weather. Purple Star gives you the map.

    Four systems, one birth, no blending. When you want the weather, read the Four Pillars at the BaZi hub.

    Common questions

    Questions about Purple Star Astrology

    What is Purple Star Astrology?
    Purple Star Astrology is a Chinese birth chart system that reads one birth moment as a court: twelve palaces for the domains of a life, fourteen principal stars for the characters who occupy them, and four transformations that color the whole cast. It grew up alongside the imperial calendar offices, and it still reads best in that register — as a map for reflection and better questions, not a machine for verdicts. Start with the twelve palaces and the rest follows.
    Is Purple Star Astrology the same as Zi Wei Dou Shu?
    Yes. Zi Wei Dou Shu (紫微斗數) is the system's Chinese name, and Purple Star Astrology is its most common English rendering. Both point to the same method: a chart cast from the lunar date and hour, anchored by the Zi Wei star — the Purple Star, or Emperor. You may also see it shortened to ZWDS. This guide uses the names interchangeably and keeps the traditional characters close.
    Is Purple Star Astrology the same as BaZi?
    No, though they are often read together. Both begin from the same birth moment. BaZi reads the flow of the five elements — your energetic climate and its seasons. Purple Star maps twelve life rooms and the star characters seated in them, then reads the relationships between the rooms. One gives you weather, the other gives you a floor plan. Careful readers use both and never blend the two calculations. BaZi has its own hub here.
    What are the twelve palaces?
    The twelve palaces are the rooms of the chart, one for each domain of a life: self, siblings, marriage, children, wealth, health, travel, friends, career, property, fortune, and parents. Each palace holds a question rather than a verdict, and no room is read alone — every room answers with its two triangle partners and the room across the court. Learn the room before judging the star. The full room files live on the palaces page.
    What are the fourteen major stars?
    The fourteen principal stars are the recurring characters of the court — the Emperor, the Strategist, the Sun, the Finance General, the Moon Star, and nine more. Each carries a temperament, a strength, and a blind spot, and each bends to the room it sits in. A star is never good or bad on its own; it is read in place, with its companions. Meet all fourteen, one page each, at the stars gallery.
    What are the Four Transformations?
    The Four Transformations — the Flow, the Power, the Shine, and the Hook — are colorings that attach to four stars in every chart, set by the birth-year stem. The Flow tends to ease and open. The Power concentrates authority. The Shine brings visibility and grace. The Hook marks where things catch, repeat, or ask for attention. They activate the chart rather than rewrite it. The four forces page walks each one slowly.
    How do I start reading my chart?
    Cast a chart first — the form at the top of this page needs only a birth date, and adding the hour sharpens it. Then read in order: find your Life Palace, name the room, meet the star seated there, and add the triangle before you conclude anything. Read relationships, not isolated symbols. When you are ready for the full method, the Reader's School drills a five-step reading until it holds.
    How is a Purple Star chart cast?
    From the lunar month, day, and hour, plus the birth-year stem. The month and hour set the Life Palace, the Five Element Bureau and the day place the Zi Wei star, and the other thirteen stars fall into fixed positions from there.
    Does the Emperor star (紫微 Zi Wei) undergo the Four Transformations?
    It never receives the Flow (化祿) or the Hook (化忌). It takes the Power (化權) in Ren years and the Shine (化科) in Yi years. Tian Fu and Tian Xiang do not transform at all.
    Can a Purple Star chart predict my future?
    It describes themes and timing emphasis, not verdicts. A responsible reading names what a domain leans toward, and when it tends to be under pressure or well supported — then leaves the choice with you.
    Do I need an account to learn here?
    No. Every lesson is free and reachable without an account. Saving your progress is optional and unlocks nothing.