What this system examines
Zi Wei Dou Shu organizes a natal chart into twelve palaces to examine life areas, major stars, and changing periods as a connected system.
Free chart
Free Zi Wei Dou Shu calculator: twelve palaces and major stars
A free Zi Wei Dou Shu calculator, the purple star astrology chart: enter a birth date and hour and read the twelve palaces, the major stars and the four transformations, with the basis shown.
Free, no account needed. The chart shows its basis.
Build it here
The chart is drawn for one question. Write it in a sentence; it becomes the title of the sheet.
How this system reads
How the result is formed
Calendar and birth inputs determine the palace layout and star placements. This guide uses a fixed sample birth profile to illustrate the layout.
How to read it responsibly
Small birth-time errors may alter palace placement. The chart is a cultural interpretive model and must not be presented as scientific proof or guaranteed fate.
The other systems
Then ask one question about it
A chart on its own is the facts. A reading answers the question you bring, points at the exact card, line or palace it reads from, and can be written again with a second system beside it.