吃力不讨好

Explanation: Discussion: obtained. Take a great effort, can not be praised. Difficult to describe what can be accomplished, or the working methods of the clumsy, wrong. 　　Source: Qing Wu Jian "Twenty years have witnessed the strange status quo," the 18th back: "To be honest, money, with such a thankless task-oriented, I might as well point to the great-uncle had brought honor.