The Principle Behind Number Casting: All Things Are Numbers, Numbers Are Hexagrams
Three Numbers. Three Seconds. One Hexagram.
Number casting is the simplest, most direct method in plum blossom divination. The principle fits in one sentence: any number divided by 8 leaves a remainder that matches a trigram. Any number divided by 6 leaves a remainder that matches a moving line. First number = upper trigram. Second number = lower trigram. Third number = moving line. Where do the numbers come from? The house number you look up at. The time digits flashing on your phone. The page number you randomly flip to in a book. The license plate that just drove past. Anything with numbers on it — grab it and use it. Shao Yong said: 'Numbers never leave images; images never leave numbers.' Numbers and hexagram images are the same thing.
First number ÷8, remainder = upper trigram. Second number ÷8, remainder = lower trigram. Third number ÷6, remainder = moving line. Numbers above 8 — reduce to 8 or below. Remainder 0 = 8 (Kun trigram). Remember these three lines. You can cast a hexagram right now with any three numbers you see.
Example 1: License Plate Casting
Example 2: House Number Casting
Example 3: Random Page Number Casting
Example 4: Big Numbers, Direct Processing
Example 5: Numbers Someone Says Casually
How to Handle Numbers Above 8 or Above 6
Complete Calculation Rules for Number Casting
- Upper trigram: first number ÷8, take the remainder. 1=Qian, 2=Dui, 3=Li, 4=Zhen, 5=Xun, 6=Kan, 7=Gen, 0=Kun.
- Lower trigram: second number ÷8, same rule as above.
- Moving line: third number ÷6, take the remainder. 1=line 1, 2=line 2, 3=line 3, 4=line 4, 5=line 5, 0=line 6 (top line).
- Only two numbers: first = upper trigram, second = lower trigram. Sum of both ÷6 gives the moving line. Don't invent a third number.
- Only one number: use it ÷8 for the upper trigram (remainder 0=8). Then add the current double-hour's Earthly Branch number, ÷8 for the lower trigram. Same single number ÷6 for the moving line.
- Numbers above 8: divide by 8 and take the remainder. Or subtract multiples of 8 until the result is ≤8. Same outcome — pick whichever feels easier.
- Numbers above 6: divide by 6 and take the remainder. Or subtract multiples of 6. 0 = line 6 (top line).
Common Breakers
- Treating remainder 0 from ÷8 as 'line 0.' The eight trigrams have no trigram 0. Remainder 0 = 8 = Kun trigram. Same for ÷6: remainder 0 = line 6 moves, not 'no moving line.'
- Getting more than three numbers and not knowing what to do. Someone sees an 11-digit phone number and tries to use all 11 digits. Don't. Take the last three digits, or pick three that jump out at you intuitively. Plum blossom's creed: 'Less gets it. More confuses it.'
- Using ÷6 on all three numbers for the moving line. The first and second numbers must use ÷8 for upper and lower trigrams. Only the third number uses ÷6 for the moving line. Someone using ÷6 on all three gets lines, not trigrams.
- Making up numbers. Someone asks you to say three random numbers. You say 7, 8, 9. But in your head you're thinking of your birthday. The split between 'numbers said for show' and 'numbers really in mind' throws off the hexagram. Either say what's in your mind, or fully trust the random numbers — don't straddle both.
- Panicking at big numbers. Say a phone number ends in 678. 678÷8=84 remainder 6 → Kan trigram. Ignore the quotient. Only the remainder matters. Big numbers and small numbers work exactly the same way.
Number Casting in Four Dimensions: Career, Love, Personality, Health
Career & Wealth
Number casting has a natural advantage for career and wealth: money is itself numbers. What's the annual salary for that offer? How much is the investment? These numbers cast directly. Take the last two digits of the offer salary as the first number. The last two digits of your current salary as the second. Years of experience as the third. The resulting hexagram's ti-yong relation directly mirrors the 'energy relationship between old and new jobs.' Original shows yong generates ti + changed shows ti-yong harmony = new job smooth at first, stable later. That signal is worth serious attention. Reverse: original shows yong overcomes ti + changed still shows ti generates yong = the new place may drain you more than you expect.
Love & Relationship
Number casting has a clever use for relationships: the stroke count of the other person's name. Break their full name's total strokes into three digits. Or use surname strokes (upper trigram), given name strokes (lower trigram), total strokes (moving line). The original hexagram's ti-yong reflects your current interaction pattern. The nuclear hexagram reveals hidden mid-process issues. Pay special attention to the moving line's position. Line 1 moving = change was there from the start. Top line moving = the outcome will surprise you. If your ti trigram and their ti trigram form a generating cycle (e.g., you Li, them Zhen — wood generates fire), the foundation is right.
Personality
People who favor number casting share some traits. Fast mental math — they see numbers and produce remainders in a split second. They dislike elaborate rituals. Their world is built from numbers — license plates, elevator floors, checkout amounts, clocks. They see digits everywhere. Their thinking leans left-brain, logic-heavy. But logic can box them in. One piece of advice for number casters: don't obsess over whether 'this is the right number.' Plum blossom wants numbers that flow in naturally, not numbers you calculate. See something, use it.
Health
For health questions with number casting, the number source matters. If you're concerned about a specific body part, take its stroke count (e.g., 'stomach' in Chinese — use the word's strokes in your language, or map the part to its trigram number). Combine with the current lunar date. When the ti trigram is overcome: identify which trigram is doing the overcoming and what body part it maps to. Qian overcomes ti → watch the head and bones. Li overcomes ti → watch eyes and heart. Kan overcomes ti → watch kidneys and ears. The nuclear hexagram's overcoming of ti deserves more attention than the original's. Original = surface symptoms. Nuclear = the root cause hiding underneath. Number casting is fast for health checks but lacks the depth of liu yao. For complex situations, cross-validate with liu yao.
Core Rules of Number Casting
Practical Tips for Number Casting
- The First Number Your Eyes Land On Is the Right One: Don't 'select' numbers. Whatever your eyes land on first — that's the number. You walk into an elevator, glance at floor 7, think '7 is bad, I want 8' — don't switch. 7 is the information your senses received in that instant. 8 is something your brain fabricated. Plum blossom trusts intuition, not intention. The number intuition delivers, even if it looks inauspicious, often turns out surprisingly accurate.
- Set Up Fixed 'Number Collection Points' for Practice: Pick three fixed sources every day. The first license plate you see on the way to work. The floor number in the office elevator. The amount on your lunch receipt. Use each set to cast a hexagram daily. Don't interpret — just practice the remainder conversion. After two weeks, ÷8 and ÷6 mental math will be as fast as a multiplication table. Speed in casting frees your mind for interpretation.
- If the Numbers Don't Feel Right, Switch Sources: You grab three numbers, cast the hexagram, and all the ti-yong relations are overcoming and clashing. Maybe it's not the hexagram — maybe the number source doesn't match the question. Asking about love but using a license plate (unrelated source)? Switch to the stroke count of their name or the lunar date you first met. Different number sources correspond to different information channels.
Number Casting FAQ
Q:A phone number is so long. Which digits do I take?
A:
Take the last three digits, or any three from the last four. The last four digits are typically randomly assigned — no human selection interference. You can also take the three digits that grab your attention from the middle. Don't take the first three — 139/138/186 are carrier codes, all preset, no randomness.
Q:What if one of the three numbers is 0? You can't use 0 as a number, right?
A:
0 works perfectly. 0÷8=0 remainder 0 → Kun trigram. 0÷6=0 remainder 0 → line 6 moves. In plum blossom's system, 0 isn't emptiness. It corresponds to Kun — the earth that bears all things. When 0 appears among three numbers, don't skip it. It brings Kun's qualities to the hexagram: yielding, receptive, patient.
Q:What if I only have two numbers? No third one.
A:
Two numbers is two numbers. First = upper trigram. Second = lower trigram. Their sum ÷6 gives the moving line. Don't invent a third just to fill a slot. Plum blossom isn't rigid. Two numbers carry enough information. If you absolutely must have three, use the sum of the first two as the third. But you really don't need to.
Q:Which is more accurate — number casting or calendar casting?
A:
Neither is 'more accurate.' The same person at the same moment, using the two methods, will usually get different hexagrams. Don't treat this as contradiction — treat it as different angles. Calendar casting reflects the time dimension. Number casting reflects the space dimension. Each emphasizes something different. They complement each other. For important matters, cast with both and compare.