Luopan Basics — How to Buy, How to Read: San Yuan vs San He vs All-in-One Compasses, the 24 Mountains, the 72 Dragons, and a Step-by-Step Direction Guide • TIMEACTOR

Where the Luopan Came From — A Thousand Years from the Sinan Compass to the Feng Shui Luo Jing

The Luopan Is a Feng Shui Practitioner's Eyes — Trying to Do Feng Shui Without One Is Like Walking at Night Blindfolded

The luopan — formally called the feng shui luo jing — is the most important tool a feng shui practitioner owns. Its ancestor is the sinan, a magnetic needle that pointed south. Through the Han and Tang dynasties, layer after layer got added. By the Song dynasty it had become a full compass with multiple concentric rings. The core idea: take the north-south line from the magnetic needle as your baseline, then array the 24 Mountains, the Eight Trigrams, the Heavenly Stems and Earthly Branches, the 28 Lunar Mansions, and more around it. This lets the practitioner read multiple dimensions of directional information at once. A standard San He luopan has anywhere from a dozen to over thirty rings. Each ring has a job. But they don't work in isolation — they nest and cross-check each other. A beginner staring at a luopan with thirty-something colorful rings tends to freeze. Which ring do I actually look at? This guide answers your three biggest questions: which luopan to buy (San Yuan, San He, or all-in-one), how to read the core rings (24 Mountains plus the 72 Dragons plus the 60 Earth Dragons), and how to take a direction reading (six steps with pitfall warnings). After this, you'll pick up your luopan and know what you're doing.

Three types of luopan: ① San Yuan pan — centers on the 24 Mountains, Eight Trigrams, and Xuan Kong Flying Stars. For Xuan Kong and Li Qi practitioners. ② San He pan — centers on the 24 Mountains, 72 Penetrating Dragons, 60 Penetrating Earth Dragons, eight stems and four corners, twelve earthly branches. For San He and Form School practitioners. ③ All-in-one pan — merges San Yuan and San He content onto one plate. For people who use multiple schools. The three core rings: 24 Mountains (each covers 15°, the basic unit of sitting and facing), 72 Penetrating Dragons (each Mountain split into three cells, used for reading dragon veins and mountain forms), 60 Penetrating Earth Dragons (24 Mountains split into 60 cells, used for reading earth qi and water flows). Six steps to take a reading: level the luopan → let the needle settle → align the crosshairs → read the sitting mountain → read the facing direction → cross-check. Biggest traps: holding the luopan unlevel, crosshairs not aligned, confusing the Heaven Plate for the Earth Plate.

1. The Three Types of Luopan — San Yuan, San He, and All-in-One. Which One Do You Buy?

Feng shui luopans fall into three categories based on the school they serve. You don't need all three. But you need to know the differences before you buy. San Yuan pan — also called the Jiang pan or Xuan Kong pan. Jiang Dahong popularized it in the late Ming / early Qing for Xuan Kong feng shui. Core rings: the Earth Plate correct needle (24 Mountains), the 64 Hexagrams ring, and rings related to Xuan Kong flying stars. Its signature is fewer rings but higher information density — usually only about a dozen rings, but every one has precise mathematical meaning. Who it's for: Xuan Kong flying star students, 64-hexagram feng shui students, people who enjoy the number-crunching side. If you mainly use Shen's Xuan Kong or Da Xuan Kong — you need a San Yuan pan. San He pan — also called the Yang Gong pan. It carries forward the tradition Yang Yunsong started in the Tang dynasty. Core rings: the Earth Plate correct needle (24 Mountains), 72 Penetrating Dragons, 60 Penetrating Earth Dragons, the 60 Equal Dragons, the eight stems and four corners and twelve earthly branches, and the 28 Lunar Mansions degrees. San He pans usually have more rings than San Yuan pans — a classic San He pan runs twenty to thirty-plus rings. Who it's for: San He school students, Form School practitioners who supplement with Li Qi, people who focus on dragon-vein-spot-water-facing in the field. The 72 Penetrating Dragons ring is the soul of the San He pan. This ring tells you which precise cell of the 24 Mountains a dragon vein (mountain range) falls in — down to 5° per cell. All-in-one pan — puts San Yuan and San He content together. One side is San Yuan style, flip it over and the other side is San He style. Or both on the same face with different colors marking San He vs San Yuan content. Upside: one pan, two uses. Saves money. Downside: information overload, easy for beginners to misread. Also, some all-in-one pans have poor manufacturing precision — more rings means more chance something doesn't line up. Buying advice: if you haven't committed to a school yet, start with a basic San He pan (8-10 inch face, 15-20 rings). Why: the San He pan includes the foundational 24 Mountains, 72 Penetrating Dragons, and 60 Penetrating Earth Dragons — these are fundamentals every school uses. If you're already set on the Xuan Kong path, buy a San Yuan pan. If you plan to learn both, get a well-made all-in-one. Brand isn't what matters — precision and build quality matter. The crosshairs must be dead accurate (0.5° off means half a Mountain off). The needle must be sensitive (no sticking, no lag). The rings must align (the graduations on the three plates — correct, central, and sewing needle — must line up strictly).

2. The 24 Mountains — The Most Important Ring on Any Luopan

No matter whether you hold a San Yuan pan or a San He pan, the 24 Mountains are the one ring every luopan shares. What makes up the 24 Mountains: twelve Earthly Branches (zi, chou, yin, mao, chen, si, wu, wei, shen, you, xu, hai) + eight Heavenly Stems (jia, yi, bing, ding, geng, xin, ren, gui — removing the central stems wu and ji) + four corner trigrams (qian, gen, xun, kun). That's 24 positions. Each covers 15° of the compass (360° ÷ 24 = 15°). The full clockwise order: zi → gui → chou → gen → yin → jia → mao → yi → chen → xun → si → bing → wu → ding → wei → kun → shen → geng → you → xin → xu → qian → hai → ren → (back to zi). You need to know this order cold — eyes closed, no hesitation. A simple way to memorize: split them into eight groups of three, each group matching one of the Eight Trigrams. North group = ren, zi, gui (Kan trigram). Northeast = chou, gen, yin (Gen trigram). East = jia, mao, yi (Zhen trigram). Southeast = chen, xun, si (Xun trigram). South = bing, wu, ding (Li trigram). Southwest = wei, kun, shen (Kun trigram). West = geng, you, xin (Dui trigram). Northwest = xu, qian, hai (Qian trigram). The middle mountain in each group (zi, gen, mao, xun, wu, kun, you, qian) is the pure position — the trigram's qi at its most concentrated. The two flanking mountains are offset positions — they carry a mix of the neighboring trigram's qi. Five Elements of the 24 Mountains: memorizing by group is easier. Kan group (ren, zi, gui) = Water. Gen group (chou, gen, yin) = Earth. Zhen group (jia, mao, yi) = Wood. Xun group (chen, xun, si) = Wood. Li group (bing, wu, ding) = Fire. Kun group (wei, kun, shen) = Earth. Dui group (geng, you, xin) = Metal. Qian group (xu, qian, hai) = Metal. Note: the Xun group includes chen (which carries some Earth), but the group's overall element is Wood. The 24 Mountains are feng shui's latitude and longitude. The Mountain your house sits on defines its feng shui birth chart. Say your house sits bing and faces ren. Sitting bing (wu's left flank, Fire plus a touch of Metal). Facing ren (zi's right flank, Water plus a touch of Metal). Sitting bing's element is Fire — this house is Fire by nature. Every analysis that follows — Eight Mansions house trigram judgment, Xuan Kong flying star chart — all begin from the sitting mountain.

3. The 72 Penetrating Dragons and 60 Penetrating Earth Dragons — Precision Down to the Cell

Above the 24 Mountains sit even finer divisions. The 72 Penetrating Dragons and 60 Penetrating Earth Dragons are two complementary fine-grid systems. The 72 Penetrating Dragons divide each of the 24 Mountains into three equal cells. 24 × 3 = 72 cells. Each cell spans 5°. The three cells in each Mountain are named from outer to inner: Heaven Origin Dragon, Human Origin Dragon, Earth Origin Dragon. Take zi Mountain (345°–360°) as an example. Its three cells: Heaven Origin Dragon (345°–350°), Human Origin Dragon (350°–355°), Earth Origin Dragon (355°–360°). Among the 72 Dragons, some cells have stem-branch and Five Element labels. Others are blank — called empty cells or dead dragons. A blank cell means this position has no qi — it's an inauspicious landing spot. The 72 Penetrating Dragons are used for reading dragon veins — which cell the incoming mountain range falls into. A dragon vein landing on a labeled cell is good. Landing on a blank cell is bad. The 60 Penetrating Earth Dragons divide the 24 Mountains a different way into 60 cells. Each cell spans 6°. The 60 Dragons have a different job from the 72. The 72 read incoming dragons (mountain flow). The 60 read earth qi (the qi veins running underground). Each of the 60 Dragon cells corresponds to a Nayin Five Element (e.g., jia-zi yi-chou = metal from the sea, bing-yin ding-mao = fire in the furnace…). On the luopan, the 60 Penetrating Earth Dragons ring usually marks each cell's Nayin element. In practice: use the 72 Dragons to judge the mountain's approach, and the 60 Dragons to judge the earth's receiving qi. Good mountain approach (72 Dragons get an auspicious cell) + good earth reception (60 Dragons get a prosperous Nayin) = both the dragon vein and the earth qi are solid on this spot. Beginners don't need to master all 72 and 60 Dragons right away. Start by recognizing where they sit on the luopan, knowing what they look like, and being able to find them. After you've worked through a few dozen real cases in the field, gradually fold the 72 and 60 Dragon judgments in.

4. Taking a Direction Reading — Six Steps from Setup to Number

Taking a reading with the luopan looks simple, but every step has detail. Get any one step wrong and your number is off. Here's the standard six-step process. Step one: pick your spot. Stand at the tai ji point of the house you're measuring — usually the geometric center of the home, or 5 to 10 feet directly in front of the main door. Don't measure inside the house (rebar messes with the needle). Don't measure near power poles or transformers (strong electromagnetic interference). Don't set the luopan on anything metal (car roof, iron railing, metal table). Step two: level the luopan. Hold the base with both hands, bring it level to chest height. The face must be perfectly horizontal. If it tilts, the needle catches and won't move. A lot of people's wrists get tired and the face tips without them noticing. Step three: let the needle settle. Once the luopan is level, watch the needle. It should swing freely and eventually rest on the north-south line. Luopan needles usually have two colors — the red end points south (or north, depending on the model), the white end points the opposite way. Wait until the needle is completely still. If it keeps wobbling and won't settle, there might be invisible magnetic interference nearby (underground cables, steel foundation). Move to a different spot and try again. Step four: align the crosshairs. The luopan has two perpendicular red lines — the Heaven-Heart crosshairs. Line one of them up with your reference object. If you're measuring the house's sitting and facing, align the crosshairs with the front wall (facing) or back wall (sitting). Keep your hands steady — a tiny shift throws the crosshairs off, and your reading goes with it. Step five: read sitting and facing. With the crosshairs aligned, look at where the other end of the crosshair falls on the 24 Mountains ring. Whichever Mountain the tip lands on — that's the facing direction. 180° opposite is the sitting mountain. For example, if the front end of the crosshair lands on wu Mountain (172.5°–187.5°), your house is sitting zi, facing wu — sitting north, facing south. Important: read from the Earth Plate correct needle (the innermost ring). Don't read from the Heaven Plate sewing needle or the Human Plate central needle — those serve different purposes. Step six: cross-check. Measure the same house from two different spots — once at the front door, once at the tai ji point. The two readings should match (within 2°). If they don't, one of them got interference or the crosshairs weren't aligned. Run the whole process again until the two readings agree. Only after these six steps do you have a trusted sitting-and-facing number. This number is the foundation of every feng shui analysis that follows. Get the sitting wrong, and everything — Eight Mansions, Xuan Kong, San He — comes out wrong.

5. The Five Biggest Beginner Mistakes — Sidestep These Traps

Mistake one: reading the wrong plate. A luopan typically has three graduated rings. Innermost: the Earth Plate correct needle — magnetic north baseline, used for fixing the 24 Mountains sitting and facing. Middle: the Human Plate central needle — offset back by half a position (7.5°), used for reading surrounding landforms. Outermost: the Heaven Plate sewing needle — offset forward by half a position (7.5°), used for reading water flows. A lot of beginners grab the luopan and read whatever ring catches their eye, calling it the sitting direction. The right approach: sitting and facing = read the Earth Plate correct needle (innermost). Landforms = read the Human Plate central needle. Water = read the Heaven Plate sewing needle. Three plates, three jobs. Don't mix them up. Mistake two: measuring indoors. Modern high-rise apartments are steel-reinforced concrete from top to bottom. Rebar and the metal mesh in concrete seriously distort the magnetic field. The sitting direction you measure in the middle of your living room is probably not the real one — it's the real direction plus the building's steel magnetic field. The right approach: measure outside. Stand outside the building entrance, at least 6 feet away from the wall. If you can't get outside (high floor, can't go down), use your phone compass on the balcony for a rough reading. Note the approximate sitting direction, then use satellite map orientation to cross-verify. Phone compasses in steel buildings aren't reliable either. The best approach: take the luopan downstairs, measure once on the building's south side and once on the north side, then use a weighted judgment from both. Mistake three: ignoring magnetic declination. The north your luopan points to is magnetic north (Earth's magnetic field pole). Geographic north is true north (Earth's rotational axis pole). There's a gap between them. In most of China, magnetic declination runs between 2° and 8°. Some premium luopans let you manually calibrate for declination. Entry-level ones don't. For yang house feng shui, where precision requirements aren't extreme, the declination error is usually tolerable. Each of the 24 Mountains spans 15°, so a 2°–8° offset won't push you into a different Mountain in most cases. For precise yin house (burial) feng shui, you do need to account for declination. Mistake four: skipping calibration. A new luopan does not equal an accurate luopan. Do a simple check when you first get it: find a reference line you know is true north-south (use phone GPS to set a precise north-south line on a map), then measure it with the luopan. If the reading is off by more than 3°, the luopan itself has a precision problem. Cheap luopans (under about $30) commonly have crooked crosshairs, sticky needles, or misaligned rings. Calibrate first, don't just unbox and use. Mistake five: ritual over technique. Some beginners handle the luopan like they're conducting a ceremony — perfectly poised, walking slowly, the atmosphere just right — but the crosshairs aren't aligned, the face isn't level, and the reading is wrong. Feng shui isn't ritual. It's technique. Treat the luopan as a measuring instrument, not a magic object. Get your mindset right and your technique follows. When you're not sure — take a photo. Snap a picture of the luopan reading with your phone. Study it later at home. In the field, with tricky light and angles, a photo often gives you a better read than squinting at it in real time.

Dimensions

Career & Wealth

How luopan direction readings apply to career and wealth judgment — different sitting mountains carry different Five Element and Eight Trigrams attributes. These set the baseline for the house's career and wealth tone. Sitting zi facing wu (north-south): zi = Water, wu = Fire. Water and Fire in balance. This sitting tends toward steady career progress. Good for stable professions — civil service, large corporations. Sitting mao facing you (east-west): mao = Wood, you = Metal. Wood gets chopped by Metal. This sitting needs occupants with strong adaptability. Good for freelancers and creative fields. Sitting qian facing xun (northwest-southeast): qian = Metal (male owner's career), xun = Wood (business). This sitting boosts the man's career and family business. Good for entrepreneurs. Sitting kun facing gen (southwest-northeast): kun = Earth, gen = Earth. Double Earth stacked. This sitting has strong wealth accumulation power. Good for long-term investors and savers. Your sitting mountain is your home's wealth DNA. You can improve things through interior adjustments, but the baseline gene is what it is.

Love & Relationship

How the sitting mountain affects relationships — the sitting mountain's Five Element and Eight Trigram attributes soak into the whole family's relationship patterns. Sitting wu facing zi (south-north): wu = Fire. Passionate but burns out. Relationships in this sitting often start fiercely but grind down into bickering over time. Sitting you facing mao (west-east): you = Metal. Refined but critical. Relationships here tend to erode through nitpicking and small grievances. Sitting zi facing wu (north-south): zi = Water. Soft and accommodating. Relationships in this sitting are steadier — communication flows, tolerance is high. Sitting gen facing kun (northeast-southwest): gen = Earth (yang earth, male), kun = Earth (yin earth, female). Double Earth — the relationship is solid but can feel passionless. Different people in the same sitting will have different relationship outcomes, but the sitting sets a relationship tone.

Personality

The luopan reading reveals the house's personality. Sitting zi (Water): living here long-term makes people calm, thoughtful, and quiet — but can also make them withdrawn. Sitting wu (Fire): living here long-term makes people warm, outgoing, and magnetic — but can also make them impatient. Sitting mao (Wood): living here long-term makes people creative, proactive, and optimistic — but can also make them lack follow-through. Sitting you (Metal): living here long-term makes people refined, rational, and organized — but can also make them cold and score-keeping. Sitting qian (Metal plus yang): living here long-term makes people take-charge, decisive, and strong — but can also make them domineering. Sitting kun (Earth plus yin): living here long-term makes people tolerant, patient, and family-oriented — but can also make them indecisive. This isn't saying the house turns you into someone else. Your core personality is your own. But the house's sitting direction gives you a nudge — amplifying some traits, softening others.

Health

The sitting mountain and the 24 Mountains map to health at a finer grain than the Five Elements alone — down to the specific Mountain. Zi Mountain (Water): corresponds to kidneys, urinary system, reproductive system. Wu Mountain (Fire): corresponds to heart, blood circulation, eyes. Mao Mountain (Wood): corresponds to liver, gallbladder, sinews, nervous system. You Mountain (Metal): corresponds to lungs, respiratory system, skin, teeth. Gen Mountain (Earth): corresponds to spleen, stomach, hands, joints. Kun Mountain (Earth): corresponds to spleen, stomach, abdomen, gynecology. Qian Mountain (Metal): corresponds to head, brain, large intestine. Xun Mountain (Wood): corresponds to liver, gallbladder, respiratory tract, nervous system. If a person lives long-term in a certain sitting direction and their Ba Zi shows that corresponding element as unfavorable, that body system tends to become a health weakness. This isn't fate. It's environment and innate constitution resonating. Once you've precisely measured your sitting mountain with the luopan, check the sitting-mountain-to-organ table above. See if your family's health weak spots line up. If they do, adjust that direction's Five Elements indoors to soften the impact.

From the Classics

Actionable Tips

Five Hard Standards for Buying Your First Luopan — Follow These and Don't Waste Money : Standard one: face diameter of 8–10 inches (about 24–30 cm). Any smaller and the rings are crammed together — you can't read the tiny characters on the 72 Penetrating Dragons ring. Any bigger and it's heavy to hold and costs more. 8–10 inches is the sweet spot. Standard two: crosshairs must be dead accurate. When you get the luopan, rotate the outer disc. Check that the crosshairs pass exactly through the center point and line up with 0° and 180° on the opposite side. If they're off, the whole luopan is unusable. Standard three: the needle must be responsive. Level the luopan. Gently flick the needle with your finger. When you let go, it should settle back to its resting position within 3–5 seconds. If it takes more than 10 seconds or gets stuck, the needle is faulty. Standard four: the rings must align. Check with calipers or an experienced eye — the 0° marks on the Heaven Plate sewing needle, the Human Plate central needle, and the Earth Plate correct needle must line up perfectly. If the three plates are off by even half a cell (about 3.75°), the build quality fails. Standard five: it must have the 72 Penetrating Dragons and 60 Penetrating Earth Dragons rings. Some simplified luopans only have the 24 Mountains with no 72 Dragons. Those are starter-only. You'll have to buy again when you go deeper. Get a full pan with the 72 and 60 Dragons from the start — one purchase. Brand recommendations: Ji'antang, Wu Luheng, Xu Shi — three heritage brands with reliable precision. Entry level runs about $40–$120. Don't buy the tourist luopans at scenic-spot souvenir stalls. Their needles and crosshairs are basically decorative.
Three Daily Drills to Build Luopan Speed — No Need to Leave the House : Drill one: blind-touch the 24 Mountains. Put the luopan on a table. Close your eyes. Run your finger slowly along the Earth Plate correct needle. When you hit a Mountain's character, name its Five Element and the two neighboring Mountains before and after. Example: you touch wu — say Fire, preceded by bing, followed by ding. Train until you can name any Mountain's element and neighbors in under five seconds. That's when you've got the fundamentals locked. Drill two: the photo-orientation method. Take your phone and luopan outside together. Stand at an intersection. Take a reading, then photograph the luopan reading next to the scene in front of you. Back at home, pull up the photos and double-check your readings. Did you misread anything in the field? Do this at 20 intersections. Your direction-reading speed will go from hesitating for 15 seconds to calling it in 3. Drill three: fill in the 72 Penetrating Dragons from memory. Print a blank 24 Mountains chart, each Mountain split into three cells. Without looking at your luopan or notes, fill in all 72 cell names and their Five Elements. You'll get a lot wrong the first time — that's normal. Check against your luopan, mark what you missed, re-memorize. Hit zero errors within a week and you'll know the luopan better than most feng shui enthusiasts ever will. These three drills take about 15 minutes a day. One month later, your speed and accuracy with the luopan will leave everyone who started at the same time in the dust.

Questions People Ask

Q: Can my phone compass actually replace a luopan? How big is the gap?

It works, but the accuracy gap is real. Your phone compass runs on a magnetometer plus accelerometer. It can detect magnetic field direction, but accuracy is limited by three things. First, sensor precision — phone magnetometers typically achieve ±1° to ±3°, a lot less sensitive than a luopan's magnetic needle. Second, the phone's internal metal and electromagnetic noise — the speaker, battery, and circuit board all generate local magnetic fields. When your phone compass app calibrates, it's calibrating against this internal interference, not the clean geomagnetic field. Third, how you hold it — tilt the phone slightly and the accelerometer's direction compensation drifts. Real-world comparison: at the same spot, a phone compass and a luopan's north reading can differ by 3°–8°. For the 24 Mountains at 15° each, 8° usually won't push you into a different Mountain — unless your sitting direction happens to sit near a Mountain boundary. At a boundary zone, 8° is enough to land you in the wrong Mountain. Bottom line: hobbyist level, rough look — phone compass is enough. Serious study, reading for others — you need a luopan. And the luopan's ring information (72 Penetrating Dragons, 60 Penetrating Earth Dragons, 28 Lunar Mansions degrees) is something no phone will ever give you.

Q: My San He pan and a street feng shui master's San Yuan pan gave different sitting directions for the same house. Who's right?

Most likely both are right — you're reading different plates. Both San He and San Yuan pans have the Earth Plate correct needle. This plate is the same on both — both use magnetic north as the baseline. If you both read the Earth Plate correct needle on the same house, the results should match. If they don't, only three possibilities: ① someone read the wrong plate (e.g., mistook the Heaven Plate sewing needle for the Earth Plate correct needle). ② someone's luopan has bad crosshairs or a bad needle. ③ one person measured indoors and the other outdoors (rebar interference causing different results). There's another common situation: San He practitioners habitually use the Heaven Plate sewing needle for direction (not the Earth Plate correct needle). San Yuan practitioners habitually use the Earth Plate correct needle. These two baselines differ by 7.5° — half a Mountain on the 24 Mountains scale. So two practitioners from different schools giving different sitting directions for the same house — it doesn't necessarily mean one is wrong. They might be using different baseline plates. As a beginner, stick to the Earth Plate correct needle for direction. Whether you hold a San He pan or a San Yuan pan — the Earth Plate correct needle is the same.