Chengyu (成語) are Chinese idioms usually consist of four characters. They are often linked with the myth, story or historical fact from where they derived.
一箭雙鵰 - To Kill Two Eagles with One Arrow
Do one task and finish two or more goals
鶴立雞群 - A crane standing among chickens
Stand out from the crowd
飛蛾撲火 - Moths dart into the fire
One seeking for self destruction