Day Master · 1 of 10 · free study page
Jia 甲: Yang Wood, the tall tree
A name you can say out loud: what the Jia image describes, where it sits among the five elements, and how it compares with the other nine stems. Nothing to fill in.
At a glance. Jia (甲) is the Yang Wood stem, one of ten possible Day Masters. A Day Master is the stem of the day pillar, the reference point for describing a BaZi chart. The image describes tendencies, not outcomes, and it is not a reading of you. Last update: 2026-11-14.
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My Day Master is Jia
The link carries only the stem name. No birth date, no chart, nothing you typed.
What the Jia image describes
Jia is pictured as a tree growing straight up: steady, principled, inclined to grow in one clear direction. Teachers use the image so the stem is easy to remember. People use it to talk about tendencies such as:
- Growing in one clear direction, and staying with it once it is chosen.
- Needing room and a little structure to rise: a trunk grows best with space around it.
- Being a reference point others can lean on.
The stretch in the image: bending in a strong wind without treating that as defeat.
These are tendencies the image is used to talk about. They are not a description of you, and they do not predict anything. A full chart has eight characters; the Day Master is one of them.
Interactive
Where Wood sits among the five elements
Choose a relation, or tap a circle on the wheel. Each one is a word BaZi uses to describe how the rest of a chart relates to the Day Master.
Solid: feeding cycle (生). Dashed: shaping cycle (克). Outlined: Wood.
Same element · Companions 比劫
Other Wood stems sit beside Jia as peers. In chart vocabulary this group is called Companions (比劫): people and pressures that are like you. It names a relationship, not a rival or a friend.
What it feeds · Output 食伤
Wood feeds Fire (木生火). In chart vocabulary, what the Day Master feeds is its Output (食伤): expression, making, saying. It describes a direction of energy, not talent or luck.
What it shapes · Wealth 财
Wood shapes Earth (木克土). In chart vocabulary, what the Day Master shapes is called Wealth (财): what it works on and manages. Despite the name, it is not a money forecast.
What shapes it · Officer 官杀
Metal shapes Wood (金克木). In chart vocabulary, what shapes the Day Master is called Officer (官杀): rules, deadlines, responsibility. It describes structure, not punishment.
What feeds it · Resource 印
Water feeds Wood (水生木). In chart vocabulary, what feeds the Day Master is called Resource (印): learning, support, rest. It is a kind of input, not a guarantee of help.
Compare
Jia next to another Day Master
Pick a friend's stem, or one you are curious about, to see how the two elements relate in BaZi vocabulary.
甲 Jia and 乙 Yi (Yin Wood, the vine and the grass)
Both are Wood. Jia is Yang Wood and Yi is Yin Wood: the same element with opposite polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Yi page
甲 Jia and 丙 Bing (Yang Fire, the sun)
Wood feeds Fire (木生火): Jia's element flows toward Bing's. They have the same polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Bing page
甲 Jia and 丁 Ding (Yin Fire, the lamp and the candle)
Wood feeds Fire (木生火): Jia's element flows toward Ding's. They have opposite polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Ding page
甲 Jia and 戊 Wu (Yang Earth, the mountain)
Wood shapes Earth (木克土): Jia's element acts on Wu's, the way an axe works wood or a dam holds water. They have the same polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Wu page
甲 Jia and 己 Ji (Yin Earth, the field)
Wood shapes Earth (木克土): Jia's element acts on Ji's, the way an axe works wood or a dam holds water. They have opposite polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Ji page
甲 Jia and 庚 Geng (Yang Metal, the blade and the ore)
Metal shapes Wood (金克木): Geng's element acts on Jia's. They have the same polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Geng page
甲 Jia and 辛 Xin (Yin Metal, the jewel)
Metal shapes Wood (金克木): Xin's element acts on Jia's. They have opposite polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Xin page
甲 Jia and 壬 Ren (Yang Water, the river and the sea)
Water feeds Wood (水生木): Ren's element flows toward Jia's. They have the same polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Ren page
甲 Jia and 癸 Gui (Yin Water, rain and mist)
Water feeds Wood (水生木): Gui's element flows toward Jia's. They have opposite polarity. This is vocabulary for how two elements relate. It is not a compatibility score and says nothing about how two people will get on. Open the Gui page
Element relations describe structure. They are not a compatibility score.
Not sure Jia is yours?
Your Day Master is the top character of your day pillar. The free Element Check finds it in about a minute; it runs in your browser, and your birth date is not sent to us. For what a Day Master is, see What is a Day Master?; for all ten teaching images, see Day Master images.
Quick answers
- What is the Jia Day Master?
- Jia (甲) is the Yang Wood stem, one of the ten possible Day Masters in BaZi. It is taught with the image of the tall tree. Jia is pictured as a tree growing straight up: steady, principled, inclined to grow in one clear direction.
- Is a Jia Day Master a prediction?
- No. A Day Master is the reference point for describing the rest of a chart. The image describes tendencies people use it to talk about. It does not predict events, luck, health, money or relationships.
- How do I find my Day Master?
- Use the free Element Check. It runs in your browser in about a minute, and your birth date is not sent to us. This page asks for nothing and stores nothing.
The other nine Day Masters
- 乙 Yi · Yin Wood
- 丙 Bing · Yang Fire
- 丁 Ding · Yin Fire
- 戊 Wu · Yang Earth
- 己 Ji · Yin Earth
- 庚 Geng · Yang Metal
- 辛 Xin · Yin Metal
- 壬 Ren · Yang Water
- 癸 Gui · Yin Water
TangoEra describes BaZi as a cultural and reflective practice. Nothing on this page is a personal reading, a prediction, or professional advice.