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Core element 甲, 1 of 10

Jia Wood Day Master (甲)Yang Wood: the tall tree.

Like a great tree reaching skyward, Yang Wood personalities are ambitious leaders who grow steadily toward their vision. They provide shelter and structure for others.

The Wood Guardian
Tree. Tall, steady, always growing upward.Shown: the Wood Guardian, one of its 8 guardians.

Short answer

Jia (甲), also called Yang Wood, is one of the ten Day Masters in BaZi: the core element that stands for you in a birth chart. Its image is the tall tree, the towering oak. As a Day Master it describes your core temperament: They provide shelter and structure for others.
On this page

Who you are

Yang Wood is the tall tree. You grow in one direction: up. Ambition is not something you work on. It is simply how you are built.

Early on, you pick a direction and grow toward it, slowly and steadily. You don't want to win by cutting corners. You want to build something real that stands, and people sense that. They trust you to hold your ground and keep your word.

The catch is stiffness. A tree that cannot bend can break in a storm. Sometimes you hold to a plan long after a detour would serve you better. Your big lesson: bending is not the same as giving in.

Where you shine

Natural leadership

People sense your authority before you have any title. You lead from the front and hold the line when others waver.

Long-term vision

Others think in weeks. You think in years. You plant seeds knowing the harvest is far away, and you are fine with that.

Integrity

Your name matters to you. You don't cut corners or break trust for a quick win. Your word is your bond.

Building structure

You are good at building systems and teams that keep growing long after you step back.

Shelter for others

Like a tree that gives shade, you look after the people around you. You are a loyal ally and a steady provider.

What to watch for

Stiffness

Your determination can turn into refusing to adapt. Sometimes stubbornness is wearing the mask of resolve.

Needing control

You can slide into micromanaging. Others may do things differently from you without doing them wrong.

Asking for help

You like to rely on yourself. Admitting you need support feels hard, so hard times can get lonelier than they need to be.

Slow to turn

Changing course can feel like losing. You may keep going on principle after the facts have changed.

At work

You do well where effort pays off over time and the path leads upward. You want real responsibility, not just a title. Long-game fields suit you: architecture, law, medicine, education, forestry, running an organisation. The spotlight for its own sake does little for you. You shine as a founder, department head, mentor or project lead, especially where deep knowledge and honesty count.

In love

In love you are steady, loyal and a little slow to open up. You take commitment very seriously. Once someone earns your trust, you are deeply devoted. You show love by doing: providing, protecting, staying. Words come harder, so a partner may feel distance even when you are all in. You also have firm views on the right way to do things. You do best with someone who shares your values, argues honestly, and gives you room to stand tall.

Your element: Wood

The Wood element represents growth, upward momentum, and the raw drive to expand. In classical Five Element thought, Wood belongs to spring and its emotion is anger, not as a flaw, but as the force behind ambition, assertiveness, and the refusal to stay stagnant. When balanced, Wood energy becomes decisive leadership and creative vision. When excessive, it turns into frustration, impatience, or the need to control. Wood personalities are born to push through obstacles, but must learn that bending is not the same as breaking.

Classical linkWood
SeasonSpring
DirectionEast
Core emotionAnger (怒)
TraitsGrowth-driven, Assertive, Visionary, Competitive, Restless

Water feeds you, Metal tames you. Read about the Wood element or see how the elements get along.

Your Yin twin

Yin Wood, the climbing vine

Same element, a different way of carrying it. Like a vine that finds its way around any obstacle, Yin Wood personalities are adaptable and resilient. Their gentleness conceals remarkable persistence. Read about Yin Wood.

For the curious: the proper names
Day Master 日主
The classical name for your core element: the top character of your day pair.
Jia 甲
The Mandarin name of Yang Wood, the tall tree. One of the 10 sky signs (Heavenly Stems 天干).
Yi 乙
The Mandarin name of Yin Wood, the climbing vine.
Ten Gods 十神
The forces in your chart. Your strongest force picks which guardian below is yours.

FAQ

Questions people ask

What is the Jia Wood Day Master in BaZi?
BaZi writes your birth moment as 8 Chinese characters, and the top character of your birth day stands for you. Classical books call it the Day Master; we call it your core element. Jia (甲) is one of the 10 possible: Yang Wood, the tall tree. Like a great tree reaching skyward, Yang Wood personalities are ambitious leaders who grow steadily toward their vision. They provide shelter and structure for others.
How do I know if I am a Jia Wood Day Master?
It comes from the day you were born. In the Chinese calendar every day carries one of 60 pairs of characters, in a cycle that has run without a break for well over 2,000 years, and the top character of your birth day's pair is your core element (the Day Master). You cannot work it out from your birthday in your head, so use a calculator: Elemental Fate's free one does it in about a minute.
What element is Jia Wood?
Jia is Wood (木). Every element comes in an outward (yang) and an inward (yin) form, and Jia is the outward (yang) one. Chinese tradition also links Wood with spring and the east.
What is the difference between Jia and its Yin counterpart?
Both are Wood, in its two forms. Jia (the tall tree) is the outward (yang) form: more direct, bold and outgoing. Yi (the climbing vine) is the inward (yin) form: more adaptable, subtle and refined. Same element, a different way of carrying it.
Which archetypes have a Jia Day Master?
8 of Elemental Fate's 80 guardian spirits have Jia (Yang Wood) as their core element: The Wood Guardian, The Wood Skybreaker, The Wood Keeper, The Wood Trailblazer, The Wood Scholar, The Wood Hermit, The Wood Shaper, The Wood Maverick. Which one is yours depends on the strongest force in your chart, and your birth month decides that.

Are you Yang Wood? Find out free.

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