Si Hua (四化) — The Four Transformations
The Four Transformations (四化 Si Hua) are the most dynamic element of a Zi Wei Dou Shu chart. They are activated by the birth year's Heavenly Stem and transform four specific major stars, altering their quality from neutral to specifically auspicious or inauspicious.
The Four Transformations
- Hua Lu (化祿) — Transform Prosperity: Activates the star it falls on for wealth, opportunity, and smooth flow. The primary wealth indicator when in the Wealth, Career, or Migration palace.
- Hua Quan (化權) — Transform Authority: Adds power, control, and leadership to the affected star. Strong in Career and Life palaces. Can create stubbornness when excessively active.
- Hua Ke (化科) — Transform Opportunity: Academic achievement, reputation, and helpful noble people. The "Reputation Star" — protects the individual's public standing.
- Hua Ji (化忌) — Transform Obstacles: Creates friction, delay, and problems wherever it lands. The most important negative indicator — its palace position reveals the person's most chronic life challenge.
Flying the Si Hua (飛化)
The advanced Si Hua Flying technique applies the transformations not just at the natal level but cumulatively through multiple levels:
- Natal Si Hua (本命四化): The base transformations from the birth year stem
- Da Xian Si Hua (大限四化): The 10-year period transformations — applied from the stem of the palace governing the current Da Xian
- Annual Si Hua (流年四化): The year's transformations applied from the annual Heavenly Stem
- Monthly Si Hua (流月四化): Monthly precision for event timing
When a Hua Ji from one level "flies into" a palace that already contains a Natal Hua Ji, it creates a Double Ji (雙忌) situation — one of the most challenging configurations in ZWDS, indicating a period of concentrated obstacles in that palace's life domain.