牛刀割鸡

Explanation: With a slaughtering knife to kill chickens. Metaphor overkill. 　　Usage: The main predicate; as Complement; metaphor overkill 　　Source: HW as a "self-Lun Heng Ji": "cattle knife chicken, Shu Ji Kwai mining." Thesaurus:  The game is not worth the candle., lose [spoil] the ship for a ha'porth (=halfpennyworth) of tar, assign talented people for trivial tasks, Treasure Little use, Pearl Sparrow Missile, Niudingpengji, Shunzhizhechang, Suizhudanque, draw it strong, (literally) to lose the hand in trying to save the fingers--to be penny- Antonym Group:  Move appointing, everyone can do his best, Renjinqicai, the right man in the right place, Wujinqiyong, Interpersonal Perception improve one's time, Volume before employ