What are hidden stems?

Heavenly stems contained inside an earthly branch. Each branch carries one to three, and they are read as part of the chart even though they are not among the eight visible characters.

Do hidden stems count as real characters?

Yes, but with less weight than visible stems. Read the principal qi first, then treat middle and residual qi as conditions that activate under specific circumstances.

Which branch has the most hidden stems?

Chou, Yin, Chen, Si, Wei, Shen and Xu each carry three. Zi, Mao and You carry one; Wu and Hai carry two.

Hidden stems (Zang Gan)

The hidden stems table for all twelve earthly branches: which stems each branch carries, the principal, middle and residual qi, and why hidden stems decide whether a ten god is present in a chart.

Every earthly branch contains between one and three heavenly stems called hidden stems. They are not visible in the eight characters, yet they carry much of a chart’s information: a ten god can be present through a hidden stem even when no visible character shows it.

The twelve branches

Branch	Hidden stems	Principal element
Zi 子	Gui 癸	Water
Chou 丑	Ji 己 · Gui 癸 · Xin 辛	Earth
Yin 寅	Jia 甲 · Bing 丙 · Wu 戊	Wood
Mao 卯	Yi 乙	Wood
Chen 辰	Wu 戊 · Yi 乙 · Gui 癸	Earth
Si 巳	Bing 丙 · Geng 庚 · Wu 戊	Fire
Wu 午	Ding 丁 · Ji 己	Fire
Wei 未	Ji 己 · Ding 丁 · Yi 乙	Earth
Shen 申	Geng 庚 · Ren 壬 · Wu 戊	Metal
You 酉	Xin 辛	Metal
Xu 戌	Wu 戊 · Xin 辛 · Ding 丁	Earth
Hai 亥	Ren 壬 · Jia 甲	Water

The first stem listed is the principal qi (本气), the second the middle qi (中气), the third the residual qi (余气). Single-stem branches carry only principal qi.

Why the three layers matter

Principal qi is the branch’s own character: the element that most clearly describes it. Middle qi is a secondary influence that becomes visible when the branch is activated by a clash, combination or annual pillar. Residual qi is the faintest trace, often the detail that explains an otherwise puzzling response.

How to read them in your chart

Check the principal qi first: it tells you what the branch is mainly doing.
Then look for hidden stems that repeat or support a visible stem — repetition is a signal, not noise.
A missing element may still be present in a hidden stem; check before calling it absent.
The branch under the Day Master (your day branch) is read especially closely: it is the closest environment to the self.

Hidden stems and ten gods

Once you know the hidden stems, each one gets a ten god by its element and polarity relative to your Day Master. That is why two charts with identical visible characters can read differently: their branches hide different stems.

Frequently asked questions

What are hidden stems?: Heavenly stems contained inside an earthly branch. Each branch carries one to three, and they are read as part of the chart even though they are not among the eight visible characters.
Do hidden stems count as real characters?: Yes, but with less weight than visible stems. Read the principal qi first, then treat middle and residual qi as conditions that activate under specific circumstances.
Which branch has the most hidden stems?: Chou, Yin, Chen, Si, Wei, Shen and Xu each carry three. Zi, Mao and You carry one; Wu and Hai carry two.

See it in your own chart

Enter your birth date, time and place, and the calculator returns the four pillars, your Day Master, the five-element balance and the luck cycles.

Cast your free BaZi chart

This page is a study aid for classical BaZi symbolism, not a prediction. It describes tendencies and temperaments, not events, outcomes or dates. For medical, legal or financial decisions, consult a qualified professional.

Last updated 2026-11-09