Which divine beast protects you? 🐉

Saju (四柱, "four pillars") is Korea's classical system for reading a person from their birth moment — the same family of astrology known as BaZi or Four Pillars of Destiny elsewhere in East Asia. Your birth year, month, day and hour each become one pillar, and each pillar is written with two characters: a heavenly stem on top (ten of them: Gap, Eul, Byeong, Jeong, Mu, Gi, Gyeong, Sin, Im, Gye) and an earthly branch below (twelve of them, the zodiac animals from Rat to Pig). Four pillars, two characters each — eight characters in all, which is why Koreans call a person's fate their "palja" (eight characters). Pairing stems and branches in order produces a repeating cycle of sixty combinations, the famous sexagenary cycle.

The pillar for the day you were born is the day pillar, and its top character is the day master (ilgan, 日干). Classical saju treats this one character as "you," and the other seven as the environment around you. That is why this test can name your guardian from nothing but a birth date: the guardian comes from the day master, and the day master is fixed the moment you know the date.

The guardian-beast idea itself is genuinely ancient in East Asia. The four walls of Goguryeo-era tomb murals carry the four directional guardians; haetae statues stand before palace gates; village entrances got their own guardian posts. A worldview that assigns a protector to every direction, every plot of land, every family — this page simply wires an almanac into it and answers, by computation, the question "so who exactly is assigned to my house?" If you want to see your actual eight characters, the manse-ryeok calculator (Korean) computes the full chart down to the minute of each solar term.

The ten heavenly stems are the five elements — Wood, Fire, Earth, Metal, Water — each split into a yang and a yin form. And the four directional beasts have been Five-Elements guardians from the very beginning: the Azure Dragon of Wood in the East, the Vermilion Bird of Fire in the South, the White Tiger of Metal in the West, the Black Tortoise of Water in the North — with the Yellow Dragon of Earth in the Center. So the five yang stems (Gap, Byeong, Mu, Gyeong, Im) don't need any creative matchmaking: each simply receives the beast of its own element. Gap Wood being the Azure Dragon wasn't decided by this page; it was decided two thousand years ago. The five yin stems are paired with the traditional beast of the same element whose character fits the stem best. The same day master becomes a past life in the Past Life Test and an idol position in the Idol Test — change the world, and the role changes.

Gap (甲) & Eul (乙) — Wood, the East

Gap is the great tree growing straight into the sky. Its element is eastern Wood, and the guardian of the eastern sky is the Azure Dragon (青龍) — the dragon whose body is the seven eastern constellations, ruler of spring, wind and rain, the very dragon painted on the east walls of Goguryeo tombs.

Eul is the flower and the vine — bending in the wind, never breaking. That supple, graceful energy is paired with the Thousand-Year Crane (千年鶴): centerpiece of the ten-longevity-symbols folding screens, the bird said to turn azure after a thousand years and carry immortals on its back.

Byeong (丙) & Jeong (丁) — Fire, the South

Byeong is the midday sun. Its element is southern Fire, and the guardian of the southern sky is the Vermilion Bird (朱雀) — the scarlet bird whose wings are the seven southern constellations, ruler of summer's blaze. Again, canon mapping, untouched.

Jeong is lantern light and hearth fire, the ember that never quite goes out. It is paired with Bonghwang (鳳凰), the East Asian phoenix — the sovereign's bird that roosts only in paulownia trees and appears only in ages of peace, and the firebird reborn out of its own flame.

Mu (戊) & Gi (己) — Earth, the Center

Mu is mountain ranges and bedrock. In directional cosmology Earth is the Center, and the beast that commands the four directions from the middle is the Yellow Dragon (黃龍) — the same logic that makes yellow the center of the five cardinal colors and the king's robe a yellow dragon's. The fifth piece of the directional set, also canon.

Gi is the cultivated field — soil that holds, feeds and sorts. It is paired with the Haetae (獬豸): the justice beast that can tell right from wrong and rams the guilty party with its horn, and the fire-suppressing stone guardian placed in front of Gwanghwamun Gate to protect the palace grounds.

Gyeong (庚) & Sin (辛) — Metal, the West

Gyeong is unrefined iron. Its element is western Metal, and the guardian of the western sky is the White Tiger (白虎) — claws hooked into the seven western constellations, ruler of autumn's killing air, the fiercest seat among the four.

Sin is the finished jewel. It is paired with the Girin (麒麟), the East Asian unicorn — dragon-faced, deer-bodied, so gentle it refuses to step on a living blade of grass, and said to appear only when a sage is born. As auspicious as a gem, and just as rare.

Im (壬) & Gye (癸) — Water, the North

Im is the sea and the great river. Its element is northern Water, and the guardian of the northern sky is the Black Tortoise (玄武) — tortoise entwined with snake, ruler of winter and deep knowing. With this, all four directional seats have gone to the day masters of their own elements.

Gye is rain, dew and night fog. It is paired with the Nine-Tailed Fox (九尾狐) — the gumiho. A monster, you say? Trace the legend back and the nine-tailed fox first appears in the Classic of Mountains and Seas as an auspicious beast of peaceful ages; the seductress image was layered on much later. A fox that lived a thousand years to earn nine tails, master of transformation and foresight — no beast matches the quietly seeping Gye Water better.

There are 12 guardians rather than 10 because two extra conditions sit on top of the day master. The first is gwaegang (魁罡) — six specific day pillars out of the sixty (Mu-jin, Gyeong-jin, Im-jin, Mu-sul, Gyeong-sul, Im-sul) that classical saju calls "the chief star," an extreme and forceful energy. Born on one of these, you're judged too much for any directional beast to handle, and you're assigned the guardian of the sun itself — the Three-Legged Crow (三足烏, samjok-o): the three-legged crow that lives inside the sun and carries it across the sky, the bird at the center of the Goguryeo banners. Gwaegang's extreme charisma earns 10 bonus generations in the formula, too. Across the 22,280 days from 1950 to 2010, exactly 10% — 2,228 days — qualify.

The second is the Divine Magpie (神鵲). This one is decided not by the day pillar but by the bond itself: the moment your computed generation count clears 98, the test flips its verdict. You climbed the almanac looking for the guardian of your family — and what you found at the top of the family tree wasn't an ancestor who made a contract with a guardian. It was the guardian itself: you. The Divine Magpie is the legendary good-news bird of Korean folklore — the magpie that bridged the Milky Way with its own body for the two separated lovers of the Chilseok legend, and whose morning cry means a welcome guest is coming. It is also, you may have noticed, the bird on this site's nameplate. So yes: you took the magpie's own test and drew the magpie. It appears on just 85 of the 22,280 days — about 0.38% — the rarest result in this test. Even a gwaegang day pillar becomes the Divine Magpie instead of the Three-Legged Crow once the count clears 98: you carried the sun so hard you became the good news yourself.

The best-matched fellow guardian and rival guardian under your result are paired by element cycles and the beasts' own lore. The Azure Dragon's best match is the Black Tortoise because northern Water feeds eastern Wood; its rival is the White Tiger, its staring-contest partner across two thousand years of "dragon on the left, tiger on the right" gate guardianship. The Vermilion Bird and Black Tortoise clash as fire and water; the nine-tailed fox and the haetae — a beguiling spirit versus a judge of right and wrong — do not exchange warm looks.

The generation count is a value from 3 to 99 measuring the depth of the bond between the guardian and your family — the bigger the number, the older the contract. The rules are invented for this world, but they are the same rules for everyone.

1. Base count — your starting point depends on your day master's element: Wood 48, Fire 42, Earth 56, Metal 50, Water 53. The guardian world is a world of home ground, so ground-keeping Earth starts highest and flare-and-fade Fire lowest. Fire day masters get the flashiest, most visible protection in exchange — no reason to sulk.

2. Relations with the other characters — the elements of your year, month and day branches (plus the hour branch, if you entered a birth time) are scored by their classical relation to your day master. In-seong (印星), the element that gives birth to you, is worth +8 — the biggest bonus. In saju it is the energy that nurtures and shelters you; for a test that counts protectors, no character is more on the nose. Next, gwan-seong (the element that controls you) is +5. It usually sits in the penalty column, but this world reads it as the fence and the threshold around you — protection (in-seong) and enclosure (gwan-seong) ranking high together is this formula's personality. Bi-geop (your own element) is +1 — siblings standing guard with you; jae-seong (the element you control) is −2; and sik-sang, the element you pour outward, is −4: the more you radiate, the shallower the guardianship. For contrast, the Past Life Test also gives in-seong its maximum (+7), but there sik-sang is +1 and gwan-seong +3 — even when two worlds prize the same character, their scales differ.

3. Positional weights — the year branch is weighted ×1.9, the day branch ×1.4, the month branch ×1.1, the hour branch ×0.8. The year branch is the ancestral seat in saju, and this is a test that counts a family bond — so for the first time in this series, the year branch weighs the most. It is the exact mirror of the Idol Test, where the youth-seat month branch dominates: survival shows never ask about your family, but a guardian spirit asks about nothing else first.

4. Yang/yin and gwaegang — yang day masters (Gap, Byeong, Mu, Gyeong, Im) get −2; yin day masters (Eul, Jeong, Gi, Sin, Gye) get +3. Guarding is quiet, unshowy yin work, so the seeping yin stems get the edge. The six gwaegang day pillars above add another +10.

5. Scatter — with only the steps above, identical day pillars would bunch together. So the birth-date string is fed through a fixed hash function to produce two offsets, up to ±27.5 and ±6. These are not random numbers — they are computed from the date, so the same date always gets the same offsets.

Finally, anything above 93 is compressed to 0.27×, and anything below 9 to 0.55×, clamping the count into 3–99. The top is squeezed hard because 98+ triggers the Divine Magpie verdict — the threshold is meant to stay rare. Run over every date from 1950 to 2010, the mean is 58.1 generations, the median 58, and both extremes — 3 and 99 — genuinely occur. A single-digit count (3–9) shows up on less than 1% of all dates and is read not as an inherited contract but as a brand-new bond the guardian chose you for, personally, this lifetime — details in the FAQ below.

The "top N% deepest bonds" badge on your result screen is not a comparison with other people who took this test. Your input never leaves the browser, so there would be no way to build one. Instead, a precomputed percentile table ships inside this page.

Here's how it was built. For every one of the 22,280 days from January 1, 1950 to December 31, 2010, the generation count was computed with birth time unknown. Then for each count from 3 to 99, we counted what share of all dates (in permille) lands at that count or deeper, and stored the 97 numbers. Your result screen just looks your count up in that table.

A few reference points: 58 generations sits right at the median; 24% of all dates reach 75+, 8% reach 90+, 3% reach 95+. At the other end — bonds shallower than the top 50% — the badge turns gold and flips into "top N% newest picks." On the freshly-bonded side, the lower the count — the newer the contract — the higher your pick ranking. An old guardianship is your family tree's pride; a new one is yours personally. Either way, you have something to brag about.

No random function is used anywhere in producing your result. Every value on the screen is computed from your birth date (and the optional birth time).

The sequence: your birth date is converted to a running day number, and its remainder mod 60 fixes the day pillar — the sexagenary cycle repeats every sixty days without exception. The year and month pillars are trickier. In saju, the year changes not on January 1 and not on Lunar New Year but at ipchun, the "start of spring" solar term, and the month rolls over at each of the twelve major solar terms. This page embeds a table of solar-term times, minute-precise, from 1900 onward — so for someone born in early February, it checks the clock, not just the calendar, to decide whether their year pillar is still the old year or already the new one.

Apply the formula above to the resulting eight (or six, without a birth time) characters and the count falls out; the final scatter offsets also come from a hash of the date string. The upshot: any day, any device, the same birthday produces the same guardian and the same generation count. A guardianship contract that changed daily wouldn't be much of a contract.

My birthday is on the lunar calendar. Can I enter it as-is?

No — the input expects the solar (Gregorian) date. If you only know a lunar birthday, convert it to a solar date first (the Korean lunar–solar converter can do it). The almanac math runs on solar terms — the sun's position — not lunar dates, so feeding it a lunar date shifts the whole chart by up to a month.

Does not knowing my birth time change the result?

The guardian usually stays put: it's decided by the day pillar, and the day pillar depends only on the date. The generation count is what moves. Enter a time and the hour branch joins the formula at ×0.8 weight, and the hash input that generates the scatter changes too. In practice the count shifts by about 18 generations on average with versus without a time. Leave it blank and noon is used as the representative time. The exception is the Divine Magpie: the birth time can push a count across the 98 threshold, so on some dates the magpie verdict comes and goes with the hour.

Another saju calculator gives me a different chart

This test computes with exactly one convention and no options. Birth time is taken only as one of twelve two-hour branches, using each slot's midpoint; there is no 30-minute standard-time correction and no late-Rat-hour school setting (whether 11 p.m.+ counts as the next day's pillar). The day pillar is fixed by the date alone, regardless of time. So if you were born around 11 p.m. or on the day of a solar term, a full-featured almanac may disagree. For a boundary-accurate chart use the manse-ryeok calculator (Korean) — it applies term times to the minute and lets you toggle both conventions.

My count came out single-digit (3–9 generations)

Nothing to be sad about. The items that shave the count are sik-sang (the element you pour outward, −4 per character) and jae-seong (−2) — charts strong in those energies are movers and dealmakers, not the type to sit still and be watched over, so ancient contracts don't stick to them. In exchange, 3–9 generations occurs on less than 1% of all dates, and this test reads it as a young guardian who bonded with you this lifetime. Not a centuries-old contract inherited with the family register — a guardian that looked across countless families and picked you, personally, to write a fresh contract with. Old guardianship attaches to a house; young guardianship attaches to you. Your badge flips to "top N% newest picks" accordingly.

Does the share link contain my birthday?

No. The link carries a single number that packs exactly four display values: guardian id, generation count, top %, and day-pillar index. Your birth date and time are not in it and cannot be reverse-engineered from it. Whoever opens your link sees only your result screen.

Is a divine beast really protecting my house?

No. This test is entertainment with no connection to real belief, folklore practice or feng shui, and the guardian, count and percentages are just numbers from the formula published above. No tradition anywhere contains a "guardian-spirit generation formula" (we made it up just now). The almanac part is real, though — the day pillar on your screen is genuine calendar data. What actually protects a house is insurance and a door lock; what this page guarantees is only that the commute feels a little sturdier once you've decided there's an Azure Dragon at your back.

If you've read this far you've guessed: this is entertainment content. The almanac layer is a real computation over real solar-term data, and the four directional beasts really do follow the traditional element-direction mapping — but every rule that extracts a guardian and a generation count from eight characters was invented by this page. Classical saju has no concept of "guardian beasts," and the results have nothing to do with real belief, folklore, feng shui or fortune. Drawing the Azure Dragon does not mean you should move east, and drawing the nine-tailed fox does not require giving up fried chicken.

One more thing: there are no blanks among these 12 guardians. Directional beast, nine-tailed fox or young newcomer — every one of them is a protector at its post, and 3 generations is not a shallow bond but generation one of a new one. That's what a guardianship contract is for — nobody shares a contract that reads "no guardian assigned." If the saju side hooked you, the manse-ryeok calculator (Korean) will show you your actual eight characters.