# The Gui 癸 mountain

> A house facing 15° is in the Gui 癸 mountain. Gui covers every bearing from 7.5° up to 22.5°, within the Kan 坎 trigram in the North, element Water. A house facing Gui sits Ding 丁 (187.5° – 202.5°) — described as sitting Ding, facing Gui. To be sure, measure the facing as an exact degree.

## Facts about the Gui mountain

- Name: Quý · Gui · 癸
- Degree range: 7.5° – 22.5°
- Center: 15°
- Trigram: Kan 坎 (337.5° – 22.5°)
- Lines (bottom to top): yin, yang, yin
- Direction: North
- Element of the mountain: Water
- Element of the trigram: Water
- Three Yuan dragon: Human Yuan dragon
- Opposite mountain (sitting): Ding 丁 · 187.5° – 202.5°
- Neighbouring mountains: Zi 子 · Chou 丑
- Birth-year mountain: Not a birth-year mountain — only the 12 Earthly Branch mountains match a birth year.

## When measuring and setting polarity

The closer a facing is to the 7.5° or 22.5° boundary, the more easily a measuring error pushes it into Zi 子 or Chou 丑. When a reading falls within 1° of either boundary, measure again at several points before setting polarity.

Once polarity is set, every room, door or item lying within the 7.5° – 22.5° sector, seen from the center of the house, belongs to Gui.

The three mountains of Kan 坎: [Zi 子](https://myhomecheck.ai/learn/24-mountains/ty) · [Gui 癸](https://myhomecheck.ai/learn/24-mountains/quy) · [Ren 壬](https://myhomecheck.ai/learn/24-mountains/nham)

## Questions about Gui

### Is a house facing 15° a North-facing house?

Yes, but that is not precise enough. The North spans 45° (337.5° – 22.5°) and holds three mountains, Zi, Gui, Ren; a house facing 15° is in Gui. Naming the mountain tells apart houses only a few degrees from each other.

### What does a house facing Gui sit on?

It sits Ding 丁, 187.5° – 202.5°. Sitting and facing are always exactly 180° apart.

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Original page: https://myhomecheck.ai/learn/24-mountains/quy  
Other languages: [Tiếng Việt](https://myhomecheck.ai/vi/tri-thuc/24-son/quy/index.md) · [中文](https://myhomecheck.ai/zh/learn/24-mountains/quy/index.md)  
Updated: 2026-10-21