人为刀俎，我为鱼肉

Explanation: Daozu: knives and knives, cutting boards, butcher's tools. The right metaphor of life and death rests in the hands of others, being in the position to be exploited. 　　Usage: Complex sentence; as attribute, clause; containing derogatory 　　Source: Qian Han, "Historical Records Xiang Yu Ji": "A person is Daozu now, I fish." Thesaurus:  give sb. a post invade