Introduction to Three Harmonies and Three Meetings in Bazi
The twelve Earthly Branches do not act alone. In a Bazi chart they team up, and two of the most talked-about teams are the Three Harmonies (三合, San He) and the Three Meetings (三會, San Hui). If you have ever seen a string such as Yin-Mao-Chen-Si-Wu-Wei and wondered how to read it, this guide sorts out every group, shows how they differ, and explains when a combination is real and when it is only on paper.
You can follow along with your own chart: generate it with the free Bazi calculator and check which branches sit in your four pillars before you read on.
What Are the Three Harmonies and the Three Meetings?
The Three Harmonies are four groups of three branches, each spaced four positions apart, that together strengthen one element. The Three Meetings are four groups of three consecutive branches that share a season and a direction, and together strengthen the element of that season. Both are classical ways a chart gathers one element into a single force.
The Six Harmonies pair branches two at a time, while these two systems work with triples. If you want the pairs first, read the Six Harmonies guide.
The Four Three Harmony Frames (三合局)
Each Three Harmony frame joins the branch where an element is born, the branch where it peaks, and the branch where it is stored:
- Shen-Zi-Chen (申子辰) forms the Water frame. Shen is where Water is born, Zi is its peak, Chen is its vault.
- Hai-Mao-Wei (亥卯未) forms the Wood frame. Hai is birth, Mao is the peak, Wei is the vault.
- Yin-Wu-Xu (寅午戌) forms the Fire frame. Yin is birth, Wu is the peak, Xu is the vault.
- Si-You-Chou (巳酉丑) forms the Metal frame. Si is birth, You is the peak, Chou is the vault.
The middle branch of each frame (Zi, Mao, Wu, You) is the four "cardinal" branches, and it is the leader of the group. That is why two branches that include the leader, such as Shen-Zi or Zi-Chen, count as a half harmony (半合), while two branches without it are much weaker.
The Four Three Meeting Frames (三會局)
A Three Meeting frame is simpler: three neighbouring branches that fill one season.
- Yin-Mao-Chen (寅卯辰) is the east, spring, Wood meeting.
- Si-Wu-Wei (巳午未) is the south, summer, Fire meeting.
- Shen-You-Xu (申酉戌) is the west, autumn, Metal meeting.
- Hai-Zi-Chou (亥子丑) is the north, winter, Water meeting.
Because all three branches belong to one season, many classical readers treat a full Three Meeting as the more forceful of the two, though schools differ on exactly how much stronger. Note that Chen, Wei, Xu and Chou also belong to the Four Vaults, so they carry Earth as well as the frame element.
Three Harmonies vs Three Meetings: The Key Differences
- Spacing: Three Harmonies skip three positions (Shen, Zi, Chen). Three Meetings are neighbours (Yin, Mao, Chen).
- Logic: Three Harmonies follow one element through birth, peak and storage. Three Meetings follow a season and its direction.
- Shared branches: Every branch belongs to exactly one Three Harmony frame and exactly one Three Meeting frame. Chen, for example, sits in Shen-Zi-Chen and in Yin-Mao-Chen at the same time.
- Element result: Both aim at the same four elements, but the Three Meeting result follows the season, while the Three Harmony result follows the birth-to-storage cycle.
When Does a Combination Actually Form?
A frame written on a list is not automatically active in a chart. Practitioners usually check five things:
- Presence. All three branches should appear in the four pillars, or at least two including the leader for a half harmony.
- Proximity. Branches in neighbouring pillars combine easily. Branches separated by another pillar are weaker.
- Month support. A frame that includes the month branch, or the season the month belongs to, carries the most weight. To be sure which month branch applies, see the solar-term month rule.
- No clash in the way. A clash between one member and a branch beside it can break the frame apart.
- Stem support. When a Heavenly Stem of the same element shows above the branches, the result is easier to see.
Reading the outcome also means reading the hidden stems inside each branch, because a frame gathers those hidden stems, not just the surface element.
A Worked Example (Illustrative Chart)
Imagine a chart with a Hai year branch, a Mao day branch and a Wei hour branch. These three make up the complete Hai-Mao-Wei Wood frame. The chart now has far more Wood than its stems alone suggest, so a Day Master that needs Wood is helped, and one that already has too much Wood may feel overloaded.
Now imagine Shen in the month pillar instead of Hai. Mao and Wei alone make only a half frame, without the birth branch to complete it, and Shen pulls toward the Water frame instead. This is why every branch, not only the famous ones, has to be read in context.
Reading a Run of Branches: Yin, Mao, Chen, Si, Wu, Wei
Searchers often paste the six branches in order, Yin-Mao-Chen-Si-Wu-Wei. That run is two Three Meeting frames back to back: the spring Wood meeting followed by the summer Fire meeting. Wood feeds Fire, so the sequence describes a full climb from the start of spring to the end of summer.
In an actual chart you rarely see all six. More often you see one complete frame plus one neighbour, and the useful question is whether the neighbour supports the frame or drains it. Wood frames like Fire neighbours because Wood produces Fire, while a Metal branch beside a Wood frame pulls the other way.
Common Mistakes When Reading Combinations
Four errors turn up again and again, and each one leads to a wrong conclusion about the chart:
- Counting a frame because the letters are there. Seeing Yin, Mao and Chen somewhere in a chart is not enough. If they sit in distant pillars, or a clash separates them, the frame may never gather.
- Ignoring the season. A Three Harmony frame that agrees with the month branch is much stronger than one that fights it. Wood frames are strong in spring and weak in autumn.
- Treating a half harmony as a full one. Two branches are a tendency, not a finished frame. Give it partial weight and look for the third branch arriving in a luck pillar or a year.
- Forgetting that combinations can be broken. A clash, a punishment or a competing combination can undo a frame. When one branch is wanted by two groups at once, the stronger tie usually wins.
Luck pillars and annual pillars matter here too. A chart with Hai and Mao on the page becomes a full Wood frame the year Wei arrives, which is why practitioners watch the incoming branch as closely as the natal ones. The luck pillars guide explains how those ten-year branches join your natal chart.
Using Combinations to Choose Your Useful Elements
Once a frame is active, it changes which element is strong. That matters for your favorable element (Yong Shen). A chart that already gathers Wood into one force usually does not need more Wood, and may prefer the element that controls or drains it. The five elements guide shows the productive and controlling cycles you need for that step.
Treat any single rule as a starting point. A frame that forms is one input among many, and a professional reading weighs it against the whole chart.
Frequently Asked Questions
The questions below are answered in the FAQ section of this page.
Key Takeaways
- The Three Harmonies are Shen-Zi-Chen (Water), Hai-Mao-Wei (Wood), Yin-Wu-Xu (Fire) and Si-You-Chou (Metal).
- The Three Meetings are Yin-Mao-Chen (Wood), Si-Wu-Wei (Fire), Shen-You-Xu (Metal) and Hai-Zi-Chou (Water).
- Three Harmonies follow an element from birth to storage, and Three Meetings follow a season and direction.
- A frame forms best when its branches are present, adjacent, supported by the month and not broken by a clash.
- Two branches including the leader (Zi, Mao, Wu or You) make a half harmony.
- Use the free Bazi calculator to see which branches your chart holds before applying these rules.
