竭尽全力

Explanation: Do run out. Exhausted all the power. 　　Usage: Verb-object type; as predicate, adverbial; describe the efforts made by the largest 　　Source: "Three Kingdoms Weizhigukui Biography" Pei Song of the note cited "Wei Brief" do effort, Feng Xuan Ke law. " Thesaurus Group:  spare no effort; go all out; do one's best, turn out in full strength, body and soul, From all over the town Out, go full steam ahead all-out efforts, elaborateness, daily Have no time to sundial, be fully occupied everyday, day and night laboring, Yikuishiqi, Day wan, fully stretched made to work, etc at the limits of one's capacities or talents, endeavour