Hidden Stems in Saju: The Earthly Branch Under-Layers
hidden stems saju · Education
On a free saju chart you usually see eight characters: four Heavenly Stems on top and four Earthly Branches below. The branches are not empty boxes. Each one stores one, two or three hidden stems (지장간 in Korean, 藏干 in Chinese) — extra stem characters that sit under the branch and are used when a reader wants a fuller element count or a ten-god label for that branch. This guide shows how to look them up, why schools disagree about how much they count, and how to apply the table to a worked chart. Traditional associations are a starting point, not a verdict.
Get the four pillars first (free, no account): run the Saju calculator and write down the four lower characters. The free result shows the pillars only; it does not print hidden-stem labels for you. You look those up yourself with the table below.
If stems and branches are still new vocabulary, start with Heavenly Stems and Earthly Branches. If you need the Day Master first, use How to Find Your Day Master.
What a hidden stem is
A Heavenly Stem is one of ten characters (甲 through 癸). An Earthly Branch is one of twelve (子 through 亥). The branch you see on the chart is the visible character. Inside that branch, classical tables store a short list of stems. Those stored stems are the hidden stems.
Three practical points:
- Every branch has at least one. The four "pure" branches 子, 卯, 酉 and (in the usual table) a single-stem reading for 午's fire side are the simplest; most of the others hold two or three.
- One of them is the main qi. For most branches, the strongest stored stem matches the branch's own element — for example, wood inside 寅 and 卯, fire inside 巳 and 午. Schools call this 본기 / 本气. The other stored stems are weaker layers, often called middle and residual qi.
- The free chart does not print them. PillarAtlas shows the four birth pillars. Hidden stems are a reading layer you apply on top, the same way Five Elements in Saju and Ten Gods in Saju describe counting methods that go beyond the eight visible characters.
Lookup table (common teaching list)
Orders and weightings differ slightly between handbooks. The list below is a widely taught English/Chinese teaching set. Use it as a lookup, not as a claim that every software prints the same order.
| Branch | Korean / Hanja | Hidden stems (main → weaker) | Branch element |
|---|---|---|---|
| 子 | Ja / 子 | 癸 | Water |
| 丑 | Chuk / 丑 | 己, 癸, 辛 | Earth |
| 寅 | In / 寅 | 甲, 丙, 戊 | Wood |
| 卯 | Myo / 卯 | 乙 | Wood |
| 辰 | Jin / 辰 | 戊, 乙, 癸 | Earth |
| 巳 | Sa / 巳 | 丙, 戊, 庚 | Fire |
| 午 | O / 午 | 丁, 己 | Fire |
| 未 | Mi / 未 | 己, 丁, 乙 | Earth |
| 申 | Sin / 申 | 庚, 壬, 戊 | Metal |
| 酉 | Yu / 酉 | 辛 | Metal |
| 戌 | Sul / 戌 | 戊, 辛, 丁 | Earth |
| 亥 | Hae / 亥 | 壬, 甲 | Water |
When two sites disagree on element percentages for the same birth, a common reason is that one counted only the eight visible characters and the other folded in some or all of these hidden stems, sometimes with different weights for main versus residual qi.
Why ten-god counting sometimes includes them
The ten gods are relationship labels from each other stem to your Day Master. The four visible stems are the easy place to start, and a beginner can learn a lot from those alone — that is the path Ten Gods in Saju walks first.
Many schools also label the branches by looking at their hidden stems and asking the same two questions (element relationship and polarity) against the Day Master. That is useful when you want a theme for the spouse palace or the month branch, but it multiplies the number of labels and the room for disagreement. If your goal is literacy, master the visible stems first; add hidden stems when you are ready to compare methods.
Worked example
Take the same made-up birth used in earlier PillarAtlas guides: 10 February 2024, 12:00, chart 甲辰 · 丙寅 · 甲辰 · 庚午.
| Pillar | Visible pair | Branch | Hidden stems from the table |
|---|---|---|---|
| Year | 甲辰 | 辰 | 戊, 乙, 癸 |
| Month | 丙寅 | 寅 | 甲, 丙, 戊 |
| Day | 甲辰 | 辰 | 戊, 乙, 癸 |
| Hour | 庚午 | 午 | 丁, 己 |
Day Master is 甲 (yang wood). A few literacy checks you can do without any software labels:
- The month branch 寅 stores 甲 as its main qi — the same stem as the Day Master — which is one reason spring wood months are often read as supportive for a 甲 Day Master (the season topic is separate from this page's lookup skill).
- Each 辰 stores earth (戊) as main qi, plus wood (乙) and water (癸). A reader who counts hidden stems will see more earth and a little extra water than someone who only counts the eight visible characters.
- The hour branch 午 stores fire (丁) and earth (己). Neither is the Day Master itself; both become ten-god candidates only after you apply the Day Master relationship rules.
None of those checks is a personality verdict. They are table lookups that make later reading methods less mysterious.
How to practice on your own chart
- Generate the free chart and copy the four branches.
- Look each branch up in the table and write the hidden stems beside it.
- Circle the main qi for each branch (first stem in the teaching list above, or the one that matches the branch element).
- Optionally, pick one hidden stem and work out its ten-god label from your Day Master using the method in Ten Gods in Saju.
- Compare a "visible only" element tally with a "visible + main hidden stems" tally using Five Elements in Saju as the vocabulary sheet — and expect the two tallies to differ.
What hidden stems cannot do
- They are not printed on the free PillarAtlas chart. You look them up; the calculator shows pillars.
- They are not a secret second Day Master. Your Day Master remains the stem in the day column.
- Weightings are not universal. Main versus residual qi ratios vary by school and by software.
- More labels are not automatically a deeper truth. Extra characters without a method just add noise.
Next step
Run the Saju calculator, list your four branches, and fill in the hidden stems from the table. Free Saju Reading: What You Get Without Paying explains what the free chart includes and what it leaves for guides like this one.
CTA: Look up your four branches with the free Saju calculator
Entertainment-only disclaimer
PillarAtlas charts and guides are for learning, self-reflection and entertainment. They are not medical, psychological, financial or legal advice, and no outcome is guaranteed.