THE BOOK OF CHANGES
Six lines. A different perspective.
Build a hexagram from the bottom up. Explore the traditional methods, then read the images as a starting point for reflection.
Choose a casting method
01 / 0406 · 02 / 03
Three coins · six tosses
Each coin has two equally likely faces: marked face = 2, reverse = 3. Add all three values for one line. The first toss is the bottom line.
Marked face · 2 / Reverse · 3
How the coin probabilities work
The line totals 6, 7, 8 and 9 have probabilities 1/8, 3/8, 3/8 and 1/8. Each of the three coin faces is sampled independently.
Lines recorded: 0 / 6
☰ ☱ ☲ ☳ ☴ ☵ ☶ ☷
Learn the images
Meet the building blocks, or open the complete guide to any hexagram.
What this tool includes
Coin casting records all six yin/yang lines and their changes. Time and number casting belong to Plum Blossom Numerology. This tool does not include Na-jia assignments, host/guest lines, six relatives or full Liu Yao chart analysis.
Random coin outcomes are for traditional cultural exploration and reflection. They do not predict accuracy, determine good or bad fortune, or provide medical or financial advice.
What about yarrow stalks?
The Great Expansion procedure starts with 50 stalks; one is set aside, leaving 49 in use. For each change, divide them into two piles, take one stalk aside, count both piles in groups of four and keep their remainders. Three changes form one line, so a six-line cast takes eighteen changes. This is a different procedure from tossing coins, with different line-state probabilities. We explain the method here; this tool does not simulate the stalk procedure.
Commentary on the Appended Statements, part 1 (original Chinese)