Guǎn gōng de, gōng wān; guǎn jiàn de, jiàn zhí.

管弓的弓彎, 管箭的箭直。

Lit [Those who are] in charge of [making] bows [should make them] curved, [and those who are] in charge of [making] arrows [should make them] straight.

Fig Each should do his or her own duty or mind his or her own business. “You do your job and I'll do mine.”

Topics APPROPRIATENESS DIVISION OF LABOR INTERFERENCE NON-INTERFERENCE WORK