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Heavenly Stem 10 of 10 · 天干

癸

Gui

guǐ

Gui is the yin expression of the Water phase. In a pillar it supplies phase and polarity; the Earthly Branch beside it supplies the animal and the twelve-position time coordinate.

Polarity
Yin
Phase partner
壬 Ren
A winter river winding through snow-covered mountains and pavilions
Winter · NorthThis landscape visualises the traditional seasonal and directional correspondences of Water. Gui's yin position is supplied by the stem itself.

One sign, one fixed coordinate

What stays fixed for Gui

Wherever 癸 appears—year, month, day or hour—it remains Yin Water. Its position in a chart changes; these identities and stem-to-stem partners do not.

Sequence position
10 of 10

After 壬 Ren; before 甲 Jia.

Five Combination · 五合
戊 Wu

The reciprocal partner five positions away in the stem sequence.

Fixed clash
丁 Ding

The opposing stem named by the fixed reference table.

Six meetings in sixty positions

Every Gui pillar in the cycle

The ten stems and twelve branches advance together. 癸 therefore meets six branches before the sixty-position sequence returns to its opening pair.

  1. Position 10癸酉Example year 1993
  2. Position 20癸未Example year 2003
  3. Position 30癸巳Example year 2013
  4. Position 40癸卯Example year 2023
  5. Position 50癸丑Example year 2033
  6. Position 60癸亥Example year 2043

Inside the Earthly Branches · 藏干

Where 癸 is carried as a hidden stem

Branches contain one to three interior stems in a fixed order. 癸 appears inside 3 branches; its primary, middle or residual role stays attached to each occurrence.

  1. 01

    子

    Rat · Zi

    Water branch

    primary

    The branch’s principal interior stem

  2. 02

    丑

    Ox · Chou

    Earth branch

    middle

    The second stem in the branch’s interior order

  3. 03

    辰

    Dragon · Chen

    Earth branch

    residual

    The final stem in the branch’s interior order

Open the complete hidden-stem map

When 癸 is the Day Master · 日主

How Gui names all ten stem relationships

As the day stem, 癸 becomes the comparison point. The target stem's phase selects one of five relationship pairs, then its polarity selects the named member of that pair.

  1. 01甲JiaYang WoodDay Master generates it · different polarity伤官Hurting Officershāng guān
  2. 02乙YiYin WoodDay Master generates it · same polarity食神Eating Godshí shén
  3. 03丙BingYang FireDay Master controls it · different polarity正财Direct Wealthzhèng cái
  4. 04丁DingYin FireDay Master controls it · same polarity偏财Indirect Wealthpiān cái
  5. 05戊WuYang EarthIt controls the Day Master · different polarity正官Direct Officerzhèng guān
  6. 06己JiYin EarthIt controls the Day Master · same polarity七杀Seven Killingsqī shā
  7. 07庚GengYang MetalIt generates the Day Master · different polarity正印Direct Resourcezhèng yìn
  8. 08辛XinYin MetalIt generates the Day Master · same polarity偏印Indirect Resourcepiān yìn
  9. 09壬RenYang WaterSame phase · different polarity劫财Rob Wealthjié cái
  10. 10癸GuiYin WaterSame phase · same polarity比肩Friendbǐ jiān
Read the complete Ten Gods rule