徒劳无功

Explanation: Paid labor in vain without success. 　　Usage: Joint type; as predicate, object; containing derogatory 　　Source: Song Xi 'poems pass ":" tired of small and large business, suddenly near the figure far, the only futile but also. " 　　Examples: Bolo scaled, time-consuming day Kuang, ~. (China and the real "Chinese Dress" Seven) Thesaurus:  wait at one's ease for the fatigued enemy, dwell under one's vine and fig tree, to harp on the same string., new wine in old bottles, it produces silk and traps itself, get up steam; conserve strength and store up energy, fare worse and worse for all one's scheming, (of a nation) recuperate and multiply, One of a relaxation, A relaxation one, To be the Labour Lost