What Are Earthly Branches in BaZi?

What Is the Lower Row in a BaZi Chart?

When you look at a BaZi chart, the first thing you see is eight characters:

The four characters above are the Heavenly Stems, and the four characters below are the Earthly Branches.

If you already understand the Heavenly Stems, you will know that the upper row represents visible, exposed, and outwardly expressed energy—the “public face” of the chart.

The four Earthly Branches below play a very different role.

What are the Earthly Branches?

If the Heavenly Stems are flags flying above a building, the Earthly Branches are the building’s foundations and load-bearing walls. You cannot see everything they contain, but they determine how high the building can rise, how much it can carry, and how stable it remains under pressure.

The Heavenly Stems are the name card you present to the outside world. The Earthly Branches are the ground beneath your feet.

The Heavenly Stems are the outer layer; the Earthly Branches are the inner layer. The Heavenly Stems express movement; the Earthly Branches provide stability. The Heavenly Stems show; the Earthly Branches carry.

Core Definition: What Are the Earthly Branches?

The Earthly Branches are the lower characters of each of the Four Pillars in a BaZi chart.

A complete BaZi chart contains four Earthly Branches:

- the Year Branch;

- the Month Branch;

- the Day Branch;

- the Hour Branch.

The twelve Earthly Branches are:

子 Zi, 丑 Chou, 寅 Yin, 卯 Mao, 辰 Chen, 巳 Si, 午 Wu, 未 Wei, 申 Shen, 酉 You, 戌 Xu, 亥 Hai

Because there are twelve of them, they are collectively called the Twelve Earthly Branches.

The Earthly Branches function as coordinates of time and space.

- In time, they mark the year, month, day, and hour positions in a BaZi chart. Each Branch corresponds to a seasonal phase, a traditional month position, and a two-hour time period.

- In space, they correspond to directions and energetic fields. Each Branch carries a directional association.

The Twelve Earthly Branches are like twelve containers of different colors. Each container holds something inside it. What it holds is called the Hidden Stems.

The Earthly Branch is the container; the Hidden Stems are its contents.

Each Branch has a primary Five Element on the surface, but the energies continuously operating inside it are the Heavenly Stems concealed within it. This will be explained in detail in a separate article.

Before opening those containers, however, you first need to recognize the twelve Branches themselves: what they represent, where they are positioned, and how they relate to one another.

Basic Information About the Twelve Earthly Branches

The following table brings together the foundational information of the Twelve Earthly Branches:

This table contains the basic code of the Earthly Branches. The expression of each Branch comes from the combination of these qualities.

One important clarification: in BaZi, the Month Branch is determined by the solar terms rather than by the lunar calendar’s new-moon dates. The traditional month names above describe the established month positions associated with the Branches.

The Yin-Yang classification of the Earthly Branches also needs to be understood together with their elemental nature and position.

The energy of a Branch is concealed rather than fully exposed, and its internal Yin-Yang composition is further expressed through the Hidden Stems.

For example:

- Zi contains Gui Water, which is Yin;

- Yin contains Jia Wood, Bing Fire, and Wu Earth, all of which are Yang.

This will be explored in greater detail in the article on Hidden Stems.

Earthly Branches and the Chinese Zodiac: A Common Confusion

This is one of the most common mistakes made by beginners.

Earthly Branches are not the same thing as the Chinese zodiac animals.

The twelve zodiac animals are a popular mnemonic system that assigns an animal to each Earthly Branch:

- Zi Rat;

- Chou Ox;

- Yin Tiger;

- Mao Rabbit;

- Chen Dragon;

- Si Snake;

- Wu Horse;

- Wei Goat;

- Shen Monkey;

- You Rooster;

- Xu Dog;

- Hai Pig.

The zodiac animal is a familiar, popular name attached to the Branch. It is not the full meaning of the Earthly Branch itself.

For example:

- Saying “You were born in the Year of the Tiger” is a popular zodiac statement. It means that your Year Branch is Yin.

- Saying “Your Month Branch is Yin” is a BaZi statement. It means that your birth falls within the Yin month, the solar-term period from the Beginning of Spring to the Awakening of Insects, and carries the seasonal conditions associated with Yin Wood.

The zodiac animal is useful in popular conversation. The Earthly Branch is used for chart analysis.

The difference is similar to the difference between a nickname and a legal name. A nickname may be familiar and memorable, but formal identification depends on the legal name.

In BaZi analysis, we work with the Branch itself.

When you see Yin, you should think of Wood, spring, the northeast, the Yin month, the 03:00–05:00 time period, and its Hidden Stems—not only a tiger.

The Three Core Functions of the Earthly Branches

The Earthly Branches are far more than simple labels. They perform three core functions in a BaZi chart.

1. Marking Positions in Time

The Earthly Branches identify the energetic time coordinates of the Four Pillars:

- the Year Branch marks the Branch of the birth year;

- the Month Branch marks the birth season and the Month Command;

- the Day Branch marks the Branch of the birth date;

- the Hour Branch marks the birth time period.

Without the Earthly Branches, the four time coordinates of year, month, day, and hour would lose their specific energetic qualities, and a complete BaZi chart could not be formed.

2. Carrying Five Element Energy

Each Earthly Branch has a primary Five Element:

- Yin and Mao = Wood;

- Si and Wu = Fire;

- Shen and You = Metal;

- Hai and Zi = Water;

- Chou, Chen, Wei, and Xu = Earth.

This is the surface Five Element of each Branch.

What makes the Earthly Branches more complex than the Heavenly Stems is that a Branch is not entirely “pure.”

Yin is not only Wood. It also contains Fire and Earth.

Shen is not only Metal. It also contains Water and Earth.

This is why the Earthly Branches must be interpreted together with their Hidden Stems. The primary Five Element is the outer classification; the Hidden Stems reveal the internal composition.

3. Forming Relationships with Other Earthly Branches

This is one of the most dynamic parts of the Earthly Branch system.

Relationships among the Heavenly Stems are comparatively straightforward, centering mainly on generation, control, and the Five Stem Combinations.

The Earthly Branches form a much wider network of relationships:

- Six Combinations: Zi–Chou, Yin–Hai, Mao–Xu, Chen–You, Si–Shen, Wu–Wei;

- Three Harmonies: Shen–Zi–Chen form Water, Hai–Mao–Wei form Wood, Yin–Wu–Xu form Fire, Si–You–Chou form Metal;

- Three Seasonal Meetings: Yin–Mao–Chen gather Wood, Si–Wu–Wei gather Fire, Shen–You–Xu gather Metal, Hai–Zi–Chou gather Water;

- Six Clashes: Zi–Wu, Chou–Wei, Yin–Shen, Mao–You, Chen–Xu, Si–Hai;

- Six Harms: Zi–Wei, Chou–Wu, Yin–Si, Mao–Chen, Shen–Hai, You–Xu;

- Punishments: Zi–Mao punishment, Yin–Si–Shen punishment, Chou–Xu–Wei punishment, and the self-punishments of Chen, Wu, You, and Hai.

These relationships are central tools in dynamic BaZi analysis.

Why do some years suddenly activate major change? Why do certain periods feel smoother, while others bring tension or disruption?

The answer often lies in the combinations, clashes, punishments, and harms formed among the Earthly Branches.

These relationships will be explained in dedicated articles. For now, remember one key principle: the Earthly Branches do not operate in isolation. They form a network in which movement in one part can affect the whole structure.

The Month Command: The Most Influential Earthly Branch Position

Among the four Earthly Branch positions, the Month Branch has a special status. In BaZi, it is known as the Month Command.

The Chinese word ling means an order, command, or governing influence.

The Month Command is the Branch that sets the seasonal conditions of the chart.

Why does the Month Branch have this authority?

Because it represents the season at the time of birth.

- Yin, Mao, and Chen correspond to spring, when Wood Qi is seasonally active;

- Si, Wu, and Wei correspond to summer, when Fire Qi is seasonally active;

- Shen, You, and Xu correspond to autumn, when Metal Qi is seasonally active;

- Hai, Zi, and Chou correspond to winter, when Water Qi is seasonally active.

The seasonally active Qi is the form of energy most strongly supported by the natural environment at that time.

Wood grows in spring. Fire reaches its height in summer. Metal becomes prominent in autumn. Water dominates winter.

Everyone is born within one of these seasonal conditions.

The Month Command is important because it influences:

1. Day Master strength When the Day Master receives seasonal support, it is described as being supported by the season. When the seasonal environment controls or drains it, it lacks that seasonal support.

2. Chart pattern In traditional Zi Ping analysis, pattern identification begins by examining the Month Command and the Hidden Stem that emerges from it.

3. Supportive Elements The chart’s structure, seasonal condition, and strength all influence which elements are supportive, regulating, or useful.

4. Season- or Month-Branch-based Shen Sha Some Shen Sha, such as Heavenly Doctor, are identified through the Month Branch or seasonal conditions.

In simple terms:

The Month Command sets the overall seasonal environment of the chart.

A dedicated article will explain how the Month Command is used in greater detail. For now, remember one conclusion:

When reading a BaZi chart, the Month Command is one of the first places to examine.

Common Misunderstandings

Misunderstanding 1: The Earthly Branches Are Just the Zodiac Animals

This is the most common error.

The zodiac animals are the popular animal representations of the Earthly Branches. They are not the complete Branch system.

BaZi analysis works with Yin rather than merely “Tiger,” and Shen rather than merely “Monkey.”

Misunderstanding 2: Only the Surface Five Element Matters

Each Earthly Branch contains Hidden Stems.

Yin is not simply Wood. It also contains Bing Fire and Wu Earth.

The primary Five Element is only the dominant surface classification. Secondary and residual Qi may also contribute to the chart.

Simply counting the surface elements of the Earthly Branches is not enough to determine elemental strength.

Misunderstanding 3: Relationships Between Branches Can Be Ignored

A single Earthly Branch standing alone is only one symbol.

When four Branches appear together, combinations, clashes, punishments, and harms may form.

These interactions can alter how the Branches operate. A combination may bind or redirect energy, while a clash may activate, disturb, or separate it.

Looking only at individual Branches while ignoring their relationships is like looking at the chess pieces without looking at the board.

Misunderstanding 4: The Earthly Branches Are Only Supporting Characters

The Heavenly Stems and Earthly Branches are equally necessary parts of the chart. At the level of roots and underlying support, the Earthly Branches may be even more decisive.

The Heavenly Stems show application and expression; the Earthly Branches provide structure and substance.

The Heavenly Stems resemble branches and leaves; the Earthly Branches resemble roots.

A chart may have impressive Heavenly Stems, but if the Earthly Branches are unstable, heavily clashed, or unable to provide roots, the visible structure may lack support.

Conversely, when the Earthly Branches are stable and well-rooted, a chart may possess substantial underlying strength even if the Heavenly Stems appear less dramatic.

Conclusion: Remember These Three Points

1. The Earthly Branches are the foundations of the chart. They are less visible, but they carry and anchor the chart’s energy.

2. The Earthly Branches are not the zodiac animals. The zodiac is a popular symbolic layer. The Earthly Branches are the technical language used in BaZi analysis.

3. The Earthly Branches interact with one another. A Branch viewed alone is static. When several Branches meet, combinations, clashes, punishments, and harms create movement and change.

The Heavenly Stems describe what is expressed. The Earthly Branches describe where that expression is rooted, the seasonal environment in which it operates, and what surrounds it.

Together, the Heavenly Stems and Earthly Branches form the complete structure of a BaZi chart.

Explore the Twelve Earthly Branches

- 子水 Zi Rat

- 丑土 Chou Ox

- 寅木 Yin Tiger

- 卯木 Mao Rabbit

- 辰土 Chen Dragon

- 巳火 Si Snake

- 午火 Wu Horse

- 未土 Wei Goat

- 申金 Shen Monkey

- 酉金 You Rooster

- 戌土 Xu Dog

- 亥水 Hai Pig