Ji (己) is the sixth heavenly stem and the yin form of Earth. If Ji is your Day Master, it is the stem above your day pillar — the reference against which every other character is measured.
Ji Earth is the Yin form of Earth, one of the ten Day Masters. New to this? Start with what a Day Master is and how it is calculated.
Where Wu is the mountain, Ji is cultivated ground: soil that things are actually grown in. It is receptive rather than imposing, and its function is to make other things possible rather than to stand out itself.
Ji reads as accommodating, quietly capable and unusually good at improving whatever it is placed among. It absorbs difficulty instead of reflecting it, which is why Ji charts often belong to the person everyone else describes as easy to work with, without being able to say precisely what they did.
Fields need fallow seasons. The characteristic Ji failure is continuing to yield to everything until there is nothing left in the soil, then treating depletion as a personal deficiency. Ji's discipline is the boundary — not becoming hard, but declining to be farmed indefinitely.
Earth is produced by Fire and controls Water; Wood controls it and Metal drains it. For Ji this means Fire is support, Water is wealth, Wood is pressure and authority, and Metal is expression. Ji handles Wood differently from Wu: where Wood breaking up a mountain is a confrontation, Wood growing in a field is close to the intended use, so Ji charts often tolerate demanding environments better than they are given credit for.
These relationships are the Ten Gods (十神). They are not personality labels — they describe what another stem does to your Day Master when it appears in your chart. This table is generated from the same function the chart tool uses, so it matches what the calculator would tell you.
| Stem | Relation to Ji Earth | What it does to Ji Earth |
|---|---|---|
| Jia Wood 甲 | Direct Officer 正官 | Wood shapes garden soil — structure you accept. |
| Yi Wood 乙 | Seven Killings 七殺 | Wood cuts at garden soil — pressure that asks no permission. |
| Bing Fire 丙 | Direct Resource 正印 | Fire feeds garden soil steadily — support and schooling. |
| Ding Fire 丁 | Indirect Resource 偏印 | Fire feeds garden soil unevenly — sideways insight. |
| Wu Earth 戊 | Rob Wealth 劫財 | Earth of the other polarity beside garden soil — money leaves through people. |
| Ji Earth 己 | Friend 比肩 | A true peer for garden soil; a rival for the same ground. |
| Geng Metal 庚 | Hurting Officer 傷官 | garden soil outputs Metal sharply — brilliance that cuts. |
| Xin Metal 辛 | Eating God 食神 | garden soil outputs Metal easily — talent that flows. |
| Ren Water 壬 | Direct Wealth 正財 | garden soil works Water steadily — earned in proportion to effort. |
| Gui Water 癸 | Indirect Wealth 偏財 | garden soil works Water in lumps — windfalls, not salary. |
What each of the ten relations means in general — Direct Wealth, Seven Killings, Hurting Officer and the rest — is set out in the Ten Gods glossary.
Classical BaZi grades a stem by the season it was born into. Earth is a special case: it rules the last month of every season (辰未戌丑) rather than a season of its own, which is why Earth Day Masters are rarely at either extreme.
| Birth season | Grade | What it does to Ji Earth |
|---|---|---|
| Spring (寅卯辰 · Feb–Apr) | 死 Weakest | Wood grows in the field — controlling, but close to the intended use. Ji tolerates this far better than Wu does. |
| Summer (巳午未 · May–Jul) | 相 Supported | Warm, fertile and productive. Ji at its most useful; the question is whether anything is actually drawing on it. |
| Autumn (申酉戌 · Aug–Oct) | 休 Resting | Harvest: the field gives up its Metal. Rewarding and depleting in equal measure. |
| Winter (亥子丑 · Nov–Jan) | 囚 Confined | Fallow ground. Nothing grows, and that is correct — Ji born in winter needs Fire before it needs demand. |
Earth corresponds to Yellow / brown, the numbers 5, 0, and the direction Centre. These are traditional correspondences for the element itself. They are not a prescription — whether Earth is helpful to you depends on your whole chart, not on your Day Master alone.
29 July 1993, born in Shanghai — day pillar 己未 (Ji Wei).
The day stem is 己 and the birth month is 未 — late summer, an Earth month with Fire still present. Earth is well supported here, warm and productive. A Ji in this position rarely lacks material grounding; the question a reader would ask next is whether anything in the chart is drawing on it, because unused fertility and depletion look equally like stagnation.
How the day pillar is derived — solar terms, true solar time and the late Zi hour — and what a Day Master cannot tell you on its own, are covered on what is a Day Master.
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