Where the Decade Starts and How Its Direction Is Set in Zi Wei Dou Shu

Three things set the decades: start always at Life, direction from yin/yang and gender, starting age from the five-element phase; then the twelve ten-year steps unfold in order.

What This Question Is Really Asking

Reversing direction or mis-setting the starting age maps a person's twenties onto their thirties and shifts every later stage—the three elements were not aligned.

The Underlying Logic

Start: the first decade is the Life Palace, the ten years of childhood and early start.

Direction: yang-year male and yin-year female go forward (Life→Siblings→Spouse…); yin-year male and yang-year female go backward (Life→Parents→Happiness…).

Birth-year yin/yang follows the year stem: jia/bing/wu/geng/ren are yang, yi/ding/ji/xin/gui yin.

Starting age: set by the Life Palace five-element phase (water 2, wood 3, metal 4, earth 5, fire 6), adding ten years per palace thereafter.

A Step-by-Step Way to Read It

1. Fix the Life Palace and its five-element phase for the starting age
2. Read the year stem yin/yang and combine gender for direction
3. Start the first decade at Life and label its age range
4. Move one palace per step, adding ten years, laying out six to eight decades
5. Match current age to its decade palace and read that ten-year tone
6. Then lay out years within the decade to reach specific years

Three Common Mistakes

Mistake 1: Setting direction by gender alone, reversing it

Mistake 2: Ignoring the five-element phase for starting age, shifting all ages

Mistake 3: Starting the first step at another palace instead of Life

Back to Your Own Chart

The decade cuts life into ten-year segments. Set start, direction and starting age correctly, and you can accurately name which life season someone is walking through now.

Reading Order

1. Cast the natal chart first and locate the palaces and major stars tied to decade arrangement and direction before judging anything
2. Open the triple-direction of those palaces and count the auspicious, malefic and assistant stars separately
3. Check where the natal Four Transformations land to set the chart's baseline tone
4. Read the decade-limit transformations to see whether the decade arrangement and direction line is activated in this stage
5. Then read the annual transformations and the year's palace to pin down this year's trigger and timing
6. Layer natal, decade and year before concluding, then decide how to act rather than labeling good or bad