这个成语源自《呂氏春秋》中记述的一则寓言,比喻死守教条,拘泥成法,固执不变通的人。
This idiom comes from a fable described in "Master Lü's Spring and Autumn Annals" (3rd century BC). It is a metaphor for a person who sticks to the law, and is stubborn and inflexible.