The Yi Day Master 乙 — Yin Wood

A Yi day master is Yin Wood: the stem 乙 in the day pillar. The name is short and easy to mix up: the stem Yi 乙 is not the same as Yin polarity, nor the Earthly Branch Yin 寅 (Tiger). It is the second of the ten Heavenly Stems, Wood in its Yin polarity. Below is how to read such a Day Master: the image, the season, strength, favourable elements, the Ten Gods and typical mistakes. The general framework is in the article Day Master.

The image: grass, vine, flower

In early commentaries the character 乙 depicts a curved shoot that has not yet straightened. The traditional image of the stem is grass, a vine, a flowering shrub. Such a plant cannot hold its shape on its own, but it bends without breaking, goes around obstacles, quickly fills any free space and grows through connections — along a support, alongside neighbours, across the ground. Hence the traits the tradition ascribes to Yi: flexibility, the ability to adapt and negotiate, sensitivity to the environment, attention to people and relationships.

Next to Yang Wood, Jia 甲, the difference is clear: Jia grows vertically and takes the blow, Yi spreads horizontally and goes around it. This is a difference in manner, not in strength: Yi can be a very strong Day Master if the season and surroundings support it.

Yi across the four seasons

The season is scored by the element of the month branch: 寅卯 — Wood, 巳午 — Fire, 申酉 — Metal, 亥子 — Water, 辰未戌丑 — Earth. For Yi, as for Jia, the rule gives:

In spring (寅卯) grass is growing — the season of strength; the 卯 month is itself pure Yi, the strongest root. The 辰 month counts as Earth, although Yi is hidden in it as the second stem. In summer (巳午) Wood gives itself to Fire: blossoming, visibility, spending energy; 未 is an Earth month, though Yi is hidden there too. In autumn (申酉) Metal trims the grass — a season of pressure; 戌 is Earth. In winter (亥子) Water feeds the roots; 丑 is an Earth month.

After the season come support (Wood and Water in the other characters), drain (Fire, Earth, Metal) and roots. For Yi a root is Wood as main qi in 寅 or 卯 (+0.5) or as a hidden stem in 亥, 辰 or 未 (+0.25).

Leaning strong, leaning weak, close to balanced

A Yi leaning weak is a plant short of water and support. The favourable elements are the resource (Water) and its own element (Wood). In everyday terms this usually means a rhythm without constant rushing, tasks where one can learn and rely on knowledge, and an environment with supportive people and a team, so that not everything has to be carried alone.

A Yi leaning strong is dense growth that needs an outlet and a shape. Output (Fire), Wealth (Earth) and Power (Metal) are favourable, starting with whichever is scarcer in the chart. In practice: tasks with a clear result, work for an audience or on a product, responsibility for a resource, and external frameworks and deadlines that gather the energy.

Close to balanced: the two scarcest elements of the chart are treated as favourable. Schools diverge on borderline cases, and the Bazi.uz reading makes that caveat explicitly; the favourable-element rule in v1 is a simplified guide.

The Ten Gods around Yi

Geng — Direct Officer. For Yi this is more than frameworks and obligations: 乙 and 庚 form the 乙庚 stem combination (Metal), which the tradition describes as a strong pull towards structure and agreements. Xin — Seven Killings: Yin Metal against Yin Wood, the image of shears and a flower, a pointed kind of pressure. Bing — Hurting Officer: the sun the flower reaches for — vivid self-expression, a wish to be noticed and to improve things. Gui — Indirect Resource: dew and rain, unconventional knowledge and intuitive nourishment. Jia — Rob Wealth: the tradition has the image of "a vine on a tree": another Wood stem can be both a support and a competitor for light.

The day pillar as the spouse palace

The branch under the Day Master is the spouse palace, the area of close partnership. Its Hidden Stems are the palace's "contents". Yi is a Yin stem and pairs only with Yin branches:

These gods describe themes the tradition links with close relationships: equality, support, commitments, demands. They are not a portrait of a specific person. Note 乙酉: the 酉 branch is pure Metal, so Seven Killings sits directly under the Day Master; the reading checks whether Resource or Output elsewhere in the chart balances it.

Work and money

Yi usually does well in tasks where connections and flexibility matter: coordination, negotiation, working with people and communities, polishing and finishing, adapting other people's ideas to real conditions. Wealth for Yi is Earth: resources tend to come through the ability to "take root" in a system, find a place in it and gradually expand it. With strong Power, Yi is often more comfortable in an organisation with clear rules; with a strong Hurting Officer, in tasks that need a visible, authored delivery. If the chart has many Friends and Rob Wealth, Yi often works better in a team or partnership than alone: its own element then becomes a support network rather than just competition. These are tendencies, not a list of professions: the actual choice depends on the whole chart and the Luck Pillars.

Common misreadings

• Confusing the stem Yi 乙 with Yin polarity. "Yi" is the name of a stem; its polarity is indeed Yin, but so is that of Ding, Ji, Xin and Gui.
• Confusing the stem Yi with the branch Yin 寅. The 寅 branch is the Tiger, and its main qi is Jia, not Yi.
• Assuming a Yin stem is weak by definition. A Yi born in the 卯 month and well rooted can lean strong.
• Reading without the season. A spring Yi and an autumn Yi are described very differently.

Yi in 2027

In 2027 — the 丁未 year — the stem Ding becomes Yi's Eating God, the Wei main qi (Ji) its Indirect Wealth and the hidden Yi its Friend. Read more in 2027, the Ding Wei year. For a sample chart with this Day Master, see 7 March 1985.

Are the stem Yi and Yin the same thing?

No. Yi 乙 is the second Heavenly Stem, Yin Wood. Yin is a polarity shared by five stems. And Yin 寅 is an Earthly Branch (Tiger). On Bazi.uz the character always appears next to the name so they are not confused.

Which elements are favourable for a Yi Day Master?

It depends on strength. Leaning weak — Water and Wood; leaning strong — Fire, Earth and Metal (starting with the scarcest); close to balanced — the two scarcest elements of the chart.

Why is Geng Direct Officer for Yi rather than Seven Killings?

Metal controls Wood, and Geng (Yang) and Yi (Yin) have different polarities, so it is Direct Officer. Seven Killings for Yi is Xin, which shares its polarity.

How does Yi differ from Jia in practice?

Jia acts directly and holds its course; Yi acts flexibly and through connections. Strength is calculated the same way, but the same stems are different Ten Gods for each of them.