力争上游 (力爭上游) lì zhēng shàng yóu

lì zhēng shàng yóu set phrase to diligently make progress; to strive for mastery; aiming for the best result; to have high ambitions
Domain: Idiom 成语
Notes: (CC-CEDICT '力爭上游'; Guoyu '力爭上游')