How to Remember the Heavenly Stems and Earthly Branches? A Complete Guide from Jia Yi Bing Ding to Zi Chou Yin Mao

The Heavenly Stems (Tian Gan) and Earthly Branches (Di Zhi) are essentially two sets of symbols our ancestors used for 'counting.' 10 Heavenly Stems (Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui) and 12 Earthly Branches (Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai) pair up to form 60 combinations, known as the '60-Year Cycle' (Liu Shi Jia Zi), used to mark years, months, days, and hours. The trick to memorizing them is not rote learning but grasping three threads: first memorize the order, then attach the Five Elements, and finally link them to the zodiac animals and time periods you already know—once you match the branches with the zodiac, you'll realize you already know half of it.

Below, we explain the Heavenly Stems, Earthly Branches, and how they form a BaZi birth chart in one go.

First, What Are the Heavenly Stems and Earthly Branches Used For?

In one sentence: The Heavenly Stems and Earthly Branches are China's oldest 'time coordinate' system.

We say 'June 2026,' but ancient people said 'Bing Wu year, Jia Wu month.' Same event, just a different set of symbols. BaZi is called 'Four Pillars' because it marks the year, month, day, and hour of your birth, each with 'one Heavenly Stem + one Earthly Branch,' making eight characters—hence the name 'BaZi' (Eight Characters).

So to read your own chart, the first step is to recognize these 22 characters.

The Ten Heavenly Stems: First Memorize the Order, Then Attach the Five Elements

There are 10 Heavenly Stems. Memorize the order thoroughly:

Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui

A tip for remembering the order: They are arranged as 'two per element, one Yang and one Yin.'

With this table, you remember three things at once: order, Five Elements, and Yin-Yang. For example, seeing 'Ding' immediately brings to mind 'Yin Fire, like a candle flame'; seeing 'Geng' means 'Yang Metal, like a sword.' The Day Master (the Heavenly Stem representing you in the chart) determines your basic personality from here.

Tip: The order of the Five Elements is 'Wood → Fire → Earth → Metal → Water' (Generating Cycle). The Heavenly Stems follow this order in pairs. Memorize the Generating Cycle, and the stem order naturally follows.

The Twelve Earthly Branches: Link Them to Zodiac Animals, and You're Halfway There

There are 12 Earthly Branches:

Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai

These 12 characters may look unfamiliar, but you've known them since childhood—they correspond exactly to the 12 zodiac animals. Attach the zodiac, and memorization becomes much easier:

Just remember the rhyme 'Zi rat, Chou ox, Yin tiger, Mao rabbit...' and you have all 12 branches' order and names. The only things left to learn are each branch's Five Element and time period—and these are exactly what you use most when reading a chart.

Note: The Five Elements are not evenly distributed among the branches. Water has Zi and Hai, Wood has Yin and Mao, Fire has Si and Wu, Metal has Shen and You, two each; but Earth is abundant—Chou, Chen, Wei, Xu are all Earth, positioned at the seasonal transitions (late winter, late spring, late summer, late autumn), acting as 'transition zones between seasons.' Beginners often miss this.

Pairing Stems and Branches: 60 Combinations Form the '60-Year Cycle'

With 10 Heavenly Stems and 12 Earthly Branches, start from 'Jia Zi' and pair them sequentially: Jia Zi, Yi Chou, Bing Yin, Ding Mao...

Key rule: Yang stems only pair with Yang branches, Yin stems only with Yin branches—so 'Jia Chou' (mismatched Yin-Yang) never occurs. Thus, it's not 10×12=120 combinations, but only 60, completing a full cycle of 60—hence the '60-Year Cycle' and 'one Jia Zi = 60 years.'

Years, months, days, and hours all follow this cycle. At your birth moment, the year, month, day, and hour each have a specific stem-branch pair, fixing your eight characters.

Practical Application: Dissecting a Birth Chart

Memorizing tables isn't enough. Let's actually construct a chart and see how the 22 characters land on it. Below is a sample birth chart (fictional birth data for teaching, not a real person):

Male (Qian Zao): Born June 15, 1995, Si hour · Ding Fire Day Master

Five Element Scores: Fire 28%, Wood 24%, Water 24%, Earth 17%, Metal 8%

Now, using what we've learned, read each character:

• Day Pillar Heavenly Stem 'Ding' → Yin Fire, like a candle flame. This is the Day Master, representing the person—a gentle, introspective but luminous fire.
• Year Pillar 'Yi Hai' → Yi is Yin Wood (flowers/grass), Hai is Pig, Water element. Wood and Water adjacent, Water nourishes Wood.
• Month Pillar 'Ren Wu' → Ren is Yang Water (river), Wu is Horse, Fire element, and it's midsummer. Born in Wu month (summer), Ding Fire gets support from the month—this immediately tells you the Day Master is not weak.
• Hour Pillar 'Yi Si' → Yi Wood appears again, Si is Snake, Fire element. Wood and Fire together, adding strength to Ding Fire.

See the pattern? You don't need deep theory yet. Simply translating each stem-branch into 'Five Elements + Yin-Yang + Zodiac/Season' reveals the chart's foundation: this chart has abundant Fire and Wood (Fire 28%, Wood 24%), the Day Master Ding Fire is born in summer with Wood to nourish it—a not-weak Self pattern. This is the first layer of information you can read once you know all the stems and branches.

Three Common Beginner Mistakes

Mistake 1: Treating stems and branches as 'random symbols.' Their order, Five Elements, and Yin-Yang are fixed. Mistake one character, and your entire Five Element analysis goes wrong. Memorize the two sequences (Jia Yi Bing Ding…, Zi Chou Yin Mao…) until they're second nature—that's paramount.

Mistake 2: Forgetting that branches 'hide' stems. Each Earthly Branch contains one to three Hidden Stems (Cang Gan). For example, Wu hides Ding and Ji. Reading only the surface stems and branches isn't enough; Hidden Stems are key for judging strength and finding Ten Gods. This is the threshold from beginner to intermediate.

Mistake 3: Getting the hour wrong, ruining the entire Hour Pillar. Hours are divided into 'two-hour' blocks, and Zi hour spans midnight (23:00–01:00). After 23:00, it's actually 'the next day's Zi hour.' People born late at night most easily misplace the Day and Hour Pillars—this is why you should always use a tool, not manual calculation.

Recognizing All 22 Characters Is the First Door to Understanding BaZi

The Heavenly Stems and Earthly Branches aren't difficult; the challenge is initially thinking they're 'mystical.' In reality, they're a 'Five Elements + Yin-Yang + Time' encoding system: 10 Heavenly Stems, 12 Earthly Branches, 60 stem-branch combinations, translating your birth moment into eight characters.

The memorization order is clear: First memorize the two sequences → Attach Five Elements and Yin-Yang to each character → Link branches to zodiac animals and time periods. After these three steps, when you look at your own chart, those eight characters will no longer be an enigma but words you can read one by one.