What does it mean to change the number of clubs?

This was written by Shao Yong, a Yi-ology scholar in the Song Dynasty. It is a book based on the mathematics in the Yi-ology and combined with the "iconology" in the Yi-ology. According to legend, when Shao Yong used it, every hexagram must be correct, and it always works. According to innate gossip's mathematical theory, the number of plum blossoms is changeable, that is, dry one, change two, keep three, shake four, lose five, talk six, root seven and Kun eight. Divination can be started anytime and anywhere, and there are various ways of divination.

Shao Kangjie, a master of Yi-ology in Song Dynasty, happened to see sparrows quarreling on plum branches while watching plum blossoms. After reasoning, he predicted that a woman would pick and break plum blossoms tomorrow night and be chased by the gardener. The woman panicked, fell down and hurt her knee. This prediction phenomenon was accurately verified overnight, so Shao Kangjie became famous at that time, and everyone named this prediction method "plum blossom easy to count".