Gunghap: The Korean Art of Saju Compatibility Explained

Gunghap (궁합 宮合) is the Korean practice of comparing two people’s saju charts to see how their energies fit together. The name joins gung (宮, “palace,” here the “houses” of a chart) with hap (合, “combining”). Traditionally it was a family matter before a marriage. Today most couples, and plenty of friends, try it for fun and curiosity.

Saju (사주 四柱, “four pillars”) turns a birth date and time into eight characters. Gunghap lays two of those charts side by side and asks: where do they support each other, where do they rub, and where do they fill each other’s gaps?

This guide explains what practitioners actually compare, how gunghap’s role has changed, and how to read a result without taking it too seriously.

Where gunghap comes from

In older Korean marriage custom, families usually arranged a match through a go-between, and parents made the decision. A Korea Herald feature on the tradition notes that, in those days, a decent gunghap reading was close to a precondition for marriage talks even to begin.

Gunghap sat inside a larger set of saju-based steps. The groom’s family sent his birth details, written as a saju danja (사주단자 四柱單子, a folded “four pillars letter”), to the bride’s family. A wedding date was then chosen, called taegil (택일 擇日, “choosing the day”). Compatibility, the calendar and family etiquette were all tied together.

What a gunghap reading compares

Different practitioners weigh things differently, but most readings look at some mix of these five layers.

Layer	What is compared	Plain-English question
1. Year animals (ddi)	The two year branches	Do our zodiac animals harmonize, clash, or neither?
2. Element balance	Wood, fire, earth, metal, water across both charts	Does one of us supply what the other lacks?
3. Day masters	Each person’s day stem (일간 ilgan)	How do our core selves interact?
4. Day branches	The branch under each day stem	How do we feel at home, day to day?
5. Links and clashes	Combinations and clashes across all pillars	Where are the natural bonds and friction points?

1. Year animals. This is the quickest layer and the one people mention at dinner. It uses the classic branch relationships: samhap (삼합 三合, three harmonies), yukhap (육합 六合, paired harmony), chung (충 沖, clash) and the Korean favourite, wonjin (원진 怨嗔, “resentment” pairs).

2. Element balance. Many practitioners care about this one the most. If one chart is heavy in water and the other is bright with fire, they ask whether the two balance or overwhelm each other. A Seoul practitioner interviewed by the Korea Herald described a good match as two people who make up for each other’s weak or excessive points.

3. Day masters. The day stem is the “you” of the chart. Two day masters can share an element, feed each other in the generating cycle (wood→fire→earth→metal→water→wood), or check each other in the controlling cycle (wood→earth→water→fire→metal→wood). There are also five classic stem pairs (천간합), such as 甲 gap with 己 gi, traditionally read as a natural pull.

4. Day branches. The branch under the day stem is often called the “spouse palace.” A Korea Times saju column, for example, begins a gunghap by checking the condition of the day pillar. Links here are read as how two people share daily life.

5. Links and clashes across the chart. Finally, the reader looks for combinations and clashes between any of the two charts’ branches and stems. A pair might clash by year and harmonize by day. That mix is normal.

How the result is usually expressed

Good practitioners rarely give a single score. They tend to describe:

Natural strengths: where things flow easily
Friction points: where the two may need patience or clear words
Complementary gifts: what each person brings that the other lacks

Apps often boil this down to a percentage or a set of stars. That is fine for fun, but the story behind the number is where the value is.

Gunghap then and now

Its role has clearly shifted. The Korea Herald feature quotes a wedding consultant who says parents tend to put more weight on gunghap, while couples mostly do it for fun and out of curiosity. The same article quotes a practitioner saying gunghap is “not about telling couples to ‘marry or not marry,’” and that what matters most is the couple’s commitment and effort.

Saju is also a social pastime now. Saju cafes in Seoul neighbourhoods like Hongdae and Myeong-dong serve curious visitors, including foreigners. The Seoul Tourism Organization began promoting them as a tourism experience in 2024. Friends, siblings and coworkers compare charts as well, not only couples.

Attitudes toward fortune-telling in general tend to be relaxed. In a 2026 Embrain Trend Monitor survey of 1,200 Koreans, 73.3% said they take only the advice worth hearing, as a reference. That is a good way to hold a gunghap result, too.

How to read your gunghap kindly

A few habits keep gunghap fun and useful:

Treat “clash” as “contrast.” Opposite energies often explain why you fascinate each other.
Look for the complement. Ask, “What does my partner’s chart have that mine doesn’t?”
Turn friction into a question. “The reading says we both want control. How do we share decisions?” is a great conversation.
Remember the people come first. A chart describes symbols. You two describe the relationship.

SajuBunny never tells anyone to end or avoid a relationship because of a chart. Gunghap is a conversation starter, and a pretty charming one.

FAQ

What does gunghap mean?

Gunghap, written 宮合 in hanja, is the Korean word for saju compatibility. Gung means “palace,” referring to the houses of a birth chart, and hap means “combining.” A gunghap reading compares two people’s four-pillar charts, looking at year animals, element balance, day masters and branch links, to describe where they naturally fit and where they may need extra care.

Is gunghap only for couples?

No. Gunghap is best known for romantic partners and traditionally for marriage, but the same comparison works for any two people. Korean saju writers have long suggested trying it with friends, siblings, bosses or coworkers. Comparing charts in a friend group is a popular modern pastime, and it tends to spark good conversations about how people communicate.

What if our gunghap is “bad”?

A low score or a clash is a description of contrasting energies in saju symbolism, not a judgment of your relationship. Use it to spot where you might misread each other and talk it through. Practitioners themselves often stress that commitment and effort matter most. Your relationship is defined by how you treat each other, not by a chart.

How is gunghap different from zodiac compatibility?

Zodiac compatibility compares only your year animals, which are two characters out of sixteen. Gunghap compares full saju charts. It adds element balance, the relationship between the two day masters, the day branches and combinations or clashes across all pillars. That is why two people with “clashing” animals can still have a warm, well-balanced gunghap.

Try it with the Moon Rabbit

Curious how your chart meets someone else’s? Start with your own free saju card. You will need it for any comparison. When you are ready, compatibility readings are in the readings library, where the Moon Rabbit keeps things warm and honest.

Saju is a cultural tradition, not a science. SajuBunny readings are for fun and self-reflection, not professional advice.

Sources

For fun and self-reflection. Saju is a traditional way of looking at yourself, not a prediction or professional advice.