What Are the 24 Mountains in Feng Shui? A Beginner's Guide

In our previous article, Compass Bagua vs Doorway Bagua: Which One Should You Use?, we explored how the Compass Bagua connects a property with geographic direction.

At the simplest level, the compass gives us eight familiar directions:

North · Northeast · East · Southeast · South · Southwest · West · Northwest

For many Feng Shui questions, those eight directions already provide useful information.

But some methods require much greater directional precision.

Instead of stopping at eight sectors of 45 degrees, traditional compass Feng Shui can divide each of those sectors into three smaller sections.

8 directions × 3 subdivisions = 24 directions

Each subdivision covers 15 degrees.

These 24 precise directional sectors are known as the 24 Mountains.

The name can sound mysterious at first. But the underlying idea is surprisingly simple:

The 24 Mountains allow Feng Shui to move from a broad direction to a much more precise compass direction.

What Are the 24 Mountains?

A compass contains 360 degrees.

If we divide those 360 degrees into the eight principal directions, each direction occupies a sector of 45 degrees:

360° ÷ 8 = 45°

The 24 Mountains take the process one step further.

Each 45-degree directional sector is divided into three equal parts:

45° ÷ 3 = 15°

So instead of simply having North, for example, we obtain:

N1 · N2 · N3

The same happens around the entire compass:

N → N1 · N2 · N3
NE → NE1 · NE2 · NE3
E → E1 · E2 · E3
SE → SE1 · SE2 · SE3
S → S1 · S2 · S3
SW → SW1 · SW2 · SW3
W → W1 · W2 · W3
NW → NW1 · NW2 · NW3

Together, these give us 24 sectors covering the full 360-degree compass.

Why Are They Called “Mountains”?

The word Mountain in this context does not mean that every direction literally contains a physical mountain.

It is the traditional name used for one of these precise directional divisions on the Feng Shui compass, or Luo Pan.

A Mountain therefore represents a directional sector.

When we say that a property faces a particular Mountain, we are identifying its orientation more precisely than simply saying that it faces North, East, South or West.

This distinction becomes important in several compass-based Feng Shui methods.

The 24 Mountains Have Traditional Names

N1, N2, N3 and the other abbreviated labels are convenient modern ways of reading the system.

Traditionally, however, each Mountain has its own Chinese name.

The 24 Mountains are constructed from:

• 12 Earthly Branches
• 8 Heavenly Stems
• 4 trigrams

Together:

12 + 8 + 4 = 24

For example, the three Mountains belonging to North are:

N1 — Ren 壬
N2 — Zi 子
N3 — Gui 癸

East contains:

E1 — Jia 甲
E2 — Mao 卯
E3 — Yi 乙

And Northwest contains:

NW1 — Xu 戌
NW2 — Qian 乾
NW3 — Hai 亥

The pattern continues around the complete compass.

The Complete 24 Mountains

Here is the complete directional structure:

From Eight Directions to Greater Precision

Why go through all this trouble?

Because saying that a property faces “East” can sometimes be too broad.

East covers a full 45-degree sector:

67.5° to 112.5°

Within that single broad direction are three different Mountains:

• E1 — Jia: 67.5°–82.5°
• E2 — Mao: 82.5°–97.5°
• E3 — Yi: 97.5°–112.5°

So imagine two properties.

One faces 80°.

The other faces 100°.

At the level of the eight main compass directions, both properties face East.

But at the level of the 24 Mountains:

80° → E1 → Jia
100° → E3 → Yi

They face the same broad direction, but they do not face the same Mountain.

Broad direction tells us where we are generally facing.
The 24 Mountains tell us much more precisely where we are facing.

Why Can a Few Degrees Matter?

Suppose two neighboring houses appear to face almost exactly the same way.

To the eye, both may simply look East-facing.

But if one falls into E1 and the other into E2 or E3, some compass-based Feng Shui calculations may treat them differently.

This is one reason why a precise compass measurement can matter more than a general description such as:

“My front door faces East.”

That statement may be useful at a basic level.

But for a more detailed property analysis, we may need the actual degree.

Facing and Sitting

When working with property orientation, another important relationship appears: Facing and Sitting.

The Facing direction represents one side of the property's directional axis. The Sitting direction is directly opposite it.

The two are separated by 180 degrees.

For example, if a property's Facing direction is:

S2 — Wu — 180°

its opposite Sitting direction is:

N2 — Zi — 0°

Similarly:

E1 ↔ W1
E2 ↔ W2
E3 ↔ W3

This creates twelve opposite directional axes around the compass.

That relationship becomes particularly important when more advanced property calculations are introduced.

Facing Direction Is Not Always the Front Door

This is an important point for beginners.

The facing direction of a property is not automatically identical to the direction of its front door.

The front door is certainly important, but property orientation may also require us to consider the building itself and how it relates to the surrounding environment.

Which side is more open?

Where does the property interact most strongly with roads, movement, views, water or open space?

What is the architectural orientation of the building?

These questions belong to the larger Feng Shui analysis.

This is another reason why YFP starts with the property and its environment rather than reducing Feng Shui to a single compass reading at the door.

A precise compass reading is valuable only when we are measuring the right directional relationship.

The 24 Mountains and Big Feng Shui

In Big Feng Shui vs Small Feng Shui, we established an important YFP principle:

Big Feng Shui always comes first.

Knowing that a building faces E1 instead of E2 does not replace the need to understand its larger environment.

A perfectly measured compass direction cannot tell us by itself whether a mountain protects the property, whether water approaches favorably, whether a road creates excessive movement, or whether neighboring structures affect the way Qi reaches the site.

The 24 Mountains therefore add precision to the analysis.

They do not replace the analysis.

A useful way to think about the sequence is:

Environment → Property → Orientation → Precise Direction → Internal Analysis

The 24 Mountains and the Compass Bagua

In the previous article, we explained why YFP uses eight true 45-degree sectors for the Compass Bagua rather than forcing compass directions into a rectangular 3 × 3 grid.

The 24 Mountains follow naturally from the same principle.

First we divide the compass into eight directional sectors.

Then, when greater precision is required, each sector can be divided into three 15-degree Mountains.

So we move from:

360° → 8 directions → 24 Mountains

The reference remains geographic direction.

Only the level of precision changes.

What About the Personal Directions We Saw Earlier?

You may recognize labels such as N1, N2, N3, S1, S2 and S3 from our article What Is a Gua Number? Personal Feng Shui Directions Explained.

There, we used the same 15-degree directional divisions to refine the way personal directions can be represented within the YFP framework.

Now we can see where that directional precision comes from.

However, it is important not to confuse two different things.

The 24 Mountains themselves describe the directional structure of the compass.

A personal classification such as Highly Favorable, Favorable or Non-Favorable is an additional interpretive layer.

In other words:

The Mountain tells us which precise direction we are looking at.
The analysis tells us what that direction means in the context we are studying.

Keeping those two ideas separate makes the system much easier to understand.

The 24 Mountains and Flying Stars

The 24 Mountains become particularly important when we move into Flying Stars Feng Shui.

Flying Stars introduces another major dimension into property analysis: time.

To establish a property's natal Flying Star chart, information about the property's period and directional orientation is used.

At that stage, simply saying that a building faces “South” may no longer provide enough precision.

South contains:

S1 — Bing
S2 — Wu
S3 — Ding

The exact Mountain can therefore become part of determining how the Flying Star chart is constructed.

This is why the 24 Mountains are an important bridge between basic compass orientation and more advanced Feng Shui analysis.

We will explore Flying Stars themselves in the next article rather than trying to introduce the entire system here.

Be Careful Near a Boundary

There is one practical consequence of dividing the compass into precise 15-degree sectors.

Sometimes a reading falls very close to the boundary between two Mountains.

For example, E1 ends at 82.5° and E2 begins there.

A reading around that boundary deserves more care than a reading comfortably near the center of a sector.

Why?

Because small measurement errors can come from many sources:

• nearby metal objects;
• electrical equipment;
• cars or reinforced structures;
• the way the compass is being held;
• the exact place where the measurement is taken;
• or simply an imprecise reading.

If one measurement says 82.3° and another says 82.8°, we should not rush to conclusions.

The sensible response is to verify the measurement carefully.

The closer the reading is to a boundary, the more important it becomes to confirm the direction.

Do You Need to Memorize All 24 Mountains?

No.

Especially not when you are beginning.

What matters first is understanding the structure:

360°
↓
8 directions of 45°
↓
3 Mountains per direction
↓
24 Mountains of 15°

Once that logic is clear, names such as Ren, Zi, Gui, Jia, Mao and Yi become much easier to place.

The compass — and tools such as YFP — can handle much of the reference work.

Understanding why the precision matters is more useful than memorizing a table without understanding it.

From a Compass Degree to a Property Analysis

Suppose a property's facing direction has been measured at 100°.

We can now move through several levels of understanding:

100°
↓
East
↓
E3
↓
Yi
↓
Precise property orientation

But that is still not the end of the Feng Shui analysis.

We must bring that directional information back into the larger picture:

Environment → Property → Direction → Time → Person → Goals → Conscious Action

That is the difference between collecting Feng Shui data and actually understanding a property.

The 24 Mountains Are a Precision Tool

The 24 Mountains may initially look like another layer of complexity.

But their purpose is actually very practical.

They allow us to replace a vague directional description with a more precise one.

Instead of:

“The property faces East.”

we may be able to say:

“The property faces E3 — Yi — at 100°.”

That precision becomes useful when the Feng Shui method we are applying depends on the exact orientation of the property.

The eight directions give us the framework.
The 24 Mountains give us precision.

What Comes Next?

We now have another important piece of the property-analysis puzzle.

We began with the environment.

Then we introduced the Bagua.

We compared Compass and Doorway reference systems.

And now we have refined the compass from eight broad directions to 24 precise Mountains.

The next step is to introduce time.

In the next article, we will explore:

What Are Flying Stars in Feng Shui?

We will see why the energetic picture of a property is not considered completely static, how time cycles are introduced, and why the property's period and facing direction become important.