Six casts, from the ground up
Each cast shows three coin faces. A yin face counts 2 and a yang face counts 3. Totals 6 and 8 make a broken yin line; 7 and 9 make a solid yang line. Lines accumulate from bottom to top, with a separate click for each cast.
What changes, exactly
6 is changing yin and 9 is changing yang. These lines flip to form the relating figure; 7 and 8 stay as they are. The base and relating figures use the site’s existing 64-hexagram canon. With no changing lines they are the same figure.
A coin method, honestly shown
Three fair independent coins give totals 6, 7, 8 and 9 with probabilities 1/8, 3/8, 3/8 and 1/8. The page uses browser randomness. Its original bronze coins are contemporary illustrations, not antique replicas. This is a traditional structure to explore, not evidence about future events. Save the current artwork or start a new sequence.