What do you mean, words are like turtles, and life is not easy?

Tortoise: yarrow and tortoise shell. The ancients used yarrow and tortoise shell to divine, judge good or bad luck and decide behavior.

Words are like turtles: a person's judgment is as accurate as the result of turtle divination.

Yi: easy, exchange, change. Not easy: not easy, not changed, not changed.

The judgment made by a person's words is as accurate and predictable as tortoise shell divination, and can stand the test of time without changing the caliber for life.