任怨任劳

Explanation: See "hard working." 　　Source: Han Huan Kuan, "Salt and Iron thorn right" food Wan, whereas the husband who kept their worries, their resentment of any labor. "" Han stone was passed "sincerity can not be a footer and cheered Peoples, complain of any thing in the world." 　　Examples: It is a grand state of the Code, Shi Road voicing source, Fei Tu ~, but also its hard its prudent. ★ Qing Li Yu, "fragrant with search relying on pity" Thesaurus:  spare no pains, Not report labor, zealously and earnestly, work hard and not be upset by criticism; willingly bear the burden of office, bear the burden and heat of the day, Remorse, to regret a previous mistake, It will be too late to regret (often used in warning or dissuading somebody, Huizhiwuji, Regret of less than, Afterthought Mo and, be full of remorse