从井救人 meaning in Chinese

(比喻对别人没有好处而徒然危害自己的行动) jump into the well to save the drowning man -- a method not suited for the purpose; go into a well to save a man only to find oneself in a dilemma; injure oneself and not to benefit the others; risk one's life or compromise one's own interest without doing others any good; try to do a good deed in the wrong way