Glossary
What a Changing Line Is in the I Ching
The changing line is where the reading becomes dynamic. It marks the point at which the current pattern is unstable enough to become something else.
In short
A changing line is a line in the primary hexagram that flips state. It is the structural mechanism that produces the changed hexagram.
How a changing line works
A changing line begins inside the primary hexagram. When it changes, yin becomes yang or yang becomes yin at that exact position.
Once every changing line is flipped, the changed hexagram appears.
Why it matters
Changing lines show where the present pattern is moving. They do not cancel the primary hexagram, but they show which part of it is under pressure or in transition.
That makes them central to interpretation whenever they appear.
How to read it well
Read the primary hexagram first, then identify the changing lines, then read the changed hexagram. This sequence keeps the reading anchored in the present before it moves into development.
If no line changes, there is no changed hexagram and the cast remains focused on the primary figure alone.