益 → 豫
Hexagram 42: Increase → Hexagram 16: Enthusiasm
Changing Lines
This transformation involves 4 changing lines (lines 1, 4, 5, 6).
Line 1
初九 利用為大作。元吉无咎。
Nine at the beginning means: It furthers one to accomplish great deeds. Supreme good fortune. No blame.
Line 4
六四 中行。告公從。利用為依遷國。
Six in the fourth place means: If you walk in the middle And report the prince, He will follow. It furthers one to be used In the removal of the capital.
Line 5
九五 有孚惠心。勿問元吉。有孚惠我德。
Nine in the fifth place means: If in truth you have a kind heart, ask not. Supreme good fortune. Truly, kindness will be recognized as your virtue.
Line 6
上九 莫益之。或擊之。立心勿恆。凶。
Nine at the top means: He brings increase to no one. Indeed, someone even strikes him. He does not keep his heart constantly steady. Misfortune.
Trigram Changes
Yilin Verse
猿墮高木，不踒手足。握金懷玉，還歸其室。
The ape falls from the tall tree, yet does not break hand or foot. Clutching gold and cradling jade, it returns safely to its chamber.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Wind and thunder bestow increase, and the transformation leads to thunder bursting from the earth — the exuberant readiness of Enthusiasm. An ape tumbles from a tall tree yet injures neither hand nor foot. It lands clutching gold and clasping jade, then returns safely to its dwelling. The ape's acrobatic fall without injury is a marvel of natural agility — what seems catastrophic turns out to be effortless. Moreover, the creature emerges from apparent disaster with treasure in hand. From Increase to Enthusiasm, the pattern reveals how one who moves in natural rhythm turns even a fall into fortune. Thunder erupts from the earth with irresistible energy; the ape's tumble is not a failure but a release, and the ground it strikes yields riches rather than ruin.
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