殺雞焉用牛刀

1. • why use an ox-cleaver to kill a chicken? (fig.) there's no need to use great ability or resources for a trivial task

     lit.

Character by character

• 殺(shā)kill
• 雞(jī)fowl
• 焉(yān)where
• 用(yòng)use
• 牛(niú)surname Niu
• 刀(dāo)surname Dao