For example, a wise man will suffer if he is careful, and a fool will gain if he is careful.
Either the east wind overrides the west wind, or the west wind overrides the east wind.
Generally speaking, idioms are all four words, but in fact, there seem to be idioms with several words. :)
Three-character idiom: forget to make friends during the Chinese New Year and close the door.
Four-word idiom: immediate effect, immediate effect.
Five-character idiom: gone forever.
Six-character idiom: it's irrelevant, you'll never finish it.
Seven-character idiom: the hero is sad about beauty, and an inch of time is worth an inch of gold.
Eight-character idiom: If you miss a thousand miles, it's now or never.
Nine-character idiom: a clever woman can't cook without rice, and Rome wasn't built in a day.
Cross-idiom: Nothing is difficult in the world if you put your mind to it.
1 1 Idiom: Deal with a man as he deals with you. If you are not careful, you will see the end of autumn.
12 idiom: only state officials can set fires, and people are not allowed to light lamps.