暗室亏心

Explanation: In the dark, people can not see the good conscience to do. 　　Usage: The main predicate; as predicate; metaphor secretly do bad things 　　Source: Yuan Zhang Yang Hao, "Zhegui Ling" song: "darkroom Kuixin, though rich, how about God?" 　　Examples: I do not want this life is reported to repay the afterlife, is the so-called ~, head of God such as electricity. (Ming Fan benefit, "tracing mind Tuomeng") Thesaurus:  do a discreditable thing secretly Antonym Group:   be scrupulously honest even when there is no one around, Buqianshi, Darkroom Buqi