The Short Answer: Palaces vs Elements
Ziwei Doushu reads your life area by area, while BaZi reads the balance of the five elements and its timing. Ziwei places stars in the twelve palaces, and each palace covers one part of life. To ask about love, you look at which stars sit in the Spouse Palace.
BaZi writes your birth year, month, day and hour as four pairs of characters. These are the four pillars, eight characters in all. At the centre is the Day Master (Ri Zhu), the Heavenly Stem of the day you were born.
The other characters either support the Day Master or drain it. That balance decides whether it leans strong or weak.
Enter your birth date and hour in the free Ziwei Doushu calculator to see the twelve palaces and the stars in each, labelled in Chinese. Enter the same details in the free BaZi calculator to see your year, month, day and hour pillars.
Calculate your chart
Ziwei Doushu maps your stars across twelve palaces; BaZi reads your Day Master and elemental balance. Both calculators are free.
Side by Side: Data, Calendar, Method, Timing
Both systems use your birth date and hour, but they split the year, read the chart and track time differently.
| Item | Ziwei Doushu | BaZi |
|---|---|---|
| Birth data | Date, hour, sex; no Life Palace without the hour | Date, hour, sex; three pillars still work without the hour |
| New year starts | Lunar New Year | Start of Spring (Lichun) |
| Core units | Twelve palaces, fourteen major stars | Four pillars, the Day Master |
| How to read | A palace plus its Three Directions and Four Squares | Day Master strength, then the element it needs |
| Ten-year cycles | Decade Cycles (Da Xian): a new palace acts as Life Palace | Major Cycles (Da Yun): a new stem-branch pair |
| Our school | Three Combinations (San He) | Strength-based (Wang Shuai) |
Which System Answers Which Question
For a question about one area of life, Ziwei is more direct. For a question about which year or period, BaZi is more direct. Either system can answer every question; they just start from different places.
| Your question | Where Ziwei looks | Where BaZi looks |
|---|---|---|
| Personality | Main stars in the Life Palace | The Day Master's element and strength |
| Love | Spouse Palace | The day branch, also called the spouse palace |
| Career direction | Career Palace | Your favorable elements |
| Money habits | Wealth Palace | How strong the wealth element is (the one the Day Master controls) |
| A good year to change | The palace where the annual transformations land | Whether the annual pillar helps the Day Master |
| Periods to watch | Palaces holding decade or annual Hua Ji (obstacle) | Decade or year bringing unhelpful elements |
Why Ziwei Uses the Lunar Calendar and BaZi the Solar Terms
The two systems start the year and month at different points. Ziwei places the Life Palace by lunar year and lunar month, so its year turns at Lunar New Year. BaZi changes month at each solar term, and its year turns at the Start of Spring.
The Start of Spring falls around February 4, while Lunar New Year moves from year to year. If you were born between the two, your two charts show different birth years. Take February 9, 2024: past the Start of Spring, but still Lunar New Year's Eve.
| Born 2024-02-09 | Ziwei Doushu | BaZi |
|---|---|---|
| Birth year | Gui Mao (Rabbit) | Jia Chen (Dragon) |
| Birth month | 12th lunar month | Yin month |
Ziwei's natal Four Transformations follow the year stem, so this chart uses the Gui set. For a leap month, Ziwei splits at the 15th day. In a leap second month, days 1 to 15 count as the second month and day 16 onward as the third.
So if you were born near a solar term, near Lunar New Year or in a leap month, a mismatch between the two charts is normal. It is not a charting error.
What to Do When the Two Disagree
Check your birth hour first, then point both charts at the same question, and trust what they agree on.
- Check the hourBeing one two-hour slot off moves the Ziwei Life Palace. Correct your birth time with True Solar Time first.
- Match the questionBoth sides must look at the same matter over the same period. For money, compare the Wealth Palace with the BaZi wealth element.
- Start with overlapA tendency both charts point to deserves more weight.
- Read gaps as sidesWhere they differ, they usually show two sides of one matter, not a right and a wrong answer.
Say the Wealth Palace holds Hua Lu (wealth), while BaZi shows unhelpful elements in those years. That may mean money does come in, but it takes more effort.
Example: One Person, Two Charts
One person's two charts often reach the same point from different directions. Take someone born in Taipei at 10:30 a.m. on May 15, 1990.
| Item | Ziwei Doushu | BaZi |
|---|---|---|
| On the chart | Pojun in Life, Qisha in Wealth, Tanlang in Career, all at Temple (Miao), the brightest level | Pillars Geng Wu, Xin Si, Geng Chen, Xin Si; Day Master Geng Metal |
| Reading | Together these three are Sha Po Lang, stars that seek change and fresh starts | Three Fire branches; Fire controls Metal, so the Day Master leans weak |
| Points to | A changeable setting and a habit of making your own way | More demands and pressure from outside; needs Earth most, then Metal |
All four stems are Metal, so Metal looks plentiful. But strength is judged from the branches, not by counting stems. Only the Earth branch of the day pillar feeds this Metal, so the chart leans weak.
Where the charts overlap is change and pressure. Ziwei shows how this person tends to respond. BaZi shows where the pressure comes from and what helps them stand firm.
