The basic chart framework
Zi Wei Dou Shu, 紫微斗数 (zǐwēi dòushù), is often translated as “Purple Star Astrology,” while many authors retain “Zi Wei Dou Shu.” It uses the birth year, month, day and hour to establish the Life Palace, Body Palace and twelve palaces, then places Zi Wei and other principal stars, supporting stars and symbols according to stated rules. The twelve palaces are commonly used to discuss self, relationships, work, wealth, travel and other areas of life.
Stars must be read through palace relationships
A keyword for one star is only a starting point. The same star can create a different context in a different palace, beside different stars, or in a relationship of meeting and opposition. A reading usually observes the target palace, its opposite and its three associated palaces: the structure known as Three Directions and Four Uprights, sānfāng sìzhèng (三方四正). Authors may translate this term in different ways, so the Chinese term and the chosen definition should be retained.
Four Transformations and dynamic layers
The Four Transformations, sìhuà (四化), are called Huà Lù (化禄), Huà Quán (化权), Huà Kē (化科) and Huà Jì (化忌). Many schools give them an important role, but the calculation rules and weights can differ. Beyond the natal chart, dàxiàn (大限, major periods), liúnián (流年, annual periods) and liúyuè (流月, monthly periods) add time layers for observing how a theme may be activated at different stages.
School differences need to be visible
Schools do not always agree on star brightness, Four Transformations, flying-star methods, supporting stars or auxiliary spirits. A website or teacher should state its charting rules rather than hide a school choice behind a single standard.
A beginner-friendly reading order
- Confirm birth data and charting rules
- learn the twelve palaces
- study the basic qualities of the fourteen principal stars
- practice Three Directions and Four Uprights
- then study the Four Transformations and time layers
- finally test the method against complete cases with reliable source data.
《紫微斗数全书》 (Zǐwēi Dòushù Quánshū, commonly “The Complete Book of Zi Wei Dou Shu”) is often cited as a traditional source, but its editions and historical questions require research context. Modern textbooks are more useful when they state their rules, show complete cases and acknowledge school differences.