Where the stems sit in your chart.
Every pillar in saju has two characters stacked on top of each other. The upper character is a heavenly stem. The lower character is an earthly branch. Four pillars, eight characters total — which is why the older name for saju is 팔자, meaning "eight characters."
The stem in your day pillar gets a special name: it's your day master. When Given says you're Yang Earth or Yin Water, that label comes from a single heavenly stem. The other three stems in your chart describe the world that surrounds it.
Five elements, two polarities.
The math behind the ten stems is small. There are five elements — Wood, Fire, Earth, Metal, Water — and each one shows up in two flavors: yang and yin. Five times two is ten. That's the whole system.
Yang is the structural, expressive, outward version of the element. Yin is the adaptive, internal, refining version. Same element, different temperature. Yang Wood is a tree trunk. Yin Wood is a vine climbing the trunk. Both are wood. Their behavior has almost nothing in common.
All ten, in order.
The canonical sequence runs 甲乙丙丁戊己庚辛壬癸 — Yang Wood through Yin Water. The order isn't arbitrary; it cycles element-by-element from Wood to Water, and inside each element yang comes before yin.
- 甲 (Yang Wood) · 갑
- Standing timber. The first move. Structural and upright.
- 乙 (Yin Wood) · 을
- Vine and grass. Persistent. Finds the opening other plants miss.
- 丙 (Yang Fire) · 병
- Midday sun. Declarative. Lights everything in range without trying.
- 丁 (Yin Fire) · 정
- Candle. Focused. Warms one thing at a time and stays steady doing it.
- 戊 (Yang Earth) · 무
- Mountain. Fixed. Withstands weather without moving.
- 己 (Yin Earth) · 기
- Garden soil. Nurturing. Holds the slow growth and feeds it.
- 庚 (Yang Metal) · 경
- Axe. Decisive. Cuts material down to a shape it can use.
- 辛 (Yin Metal) · 신
- Jewelry. Refined. Notices what's wrong before anyone else does.
- 壬 (Yang Water) · 임
- Ocean. Vast. Moves whole systems with its tides.
- 癸 (Yin Water) · 계
- Rain. Percolates downward. Knows what sits underneath the surface.
These descriptors aren't personality predictions. They're the shape of the energy. How that energy expresses depends on which pillar the stem lives in and what the other stems and branches around it are doing.
How stems combine across pillars.
A chart with the same element in multiple stems amplifies that element. Two Fire stems make a chart that runs hot. Three Water stems make one that runs cold and moves a lot of feeling around without showing it.
Stems can also clash. Yang Metal cutting Yang Wood is a classic example: an axe meeting a tree. That isn't bad — it's tension, and tension is what produces texture. A chart with no clashes tends to feel flat. A chart with too many feels chaotic. Most charts sit somewhere in between, which is why two people with the same day master can read so differently.
Stems vs. branches.
Quick distinction. Stems are the visible upper character in each pillar. Branches are the lower character — and branches carry their own hidden stems inside them, so the branches add a second layer of element data underneath the obvious one.
Most short readings focus on stems because they're the surface signal. Branches add depth, timing, and the seasonal logic that tells you when a chart's tendencies activate. If you want the other half of the picture, the branches deserve their own read — see the twelve earthly branches.
Why this matters for daily use.
When Given reads today's elements for you, it's checking how today's stems and branches interact with your day stem. A Yang Wood day master meeting a Yang Metal day will feel different from the same day master meeting a Yin Water day. Your other three stems shape how the day actually lands on you — whether the chart absorbs the energy, resists it, or runs with it.
That's the practical use of knowing your stems: the daily reading stops feeling generic and starts describing your specific configuration.