- 亏心事 kuīxīnshì shameful deedA deed that goes against one's conscience; unconscionable act; shameful thing to do.
- 不做亏心事，不怕鬼敲门 bùzuòkuīxīnshìbùpàguǐqiāomén to have a clear conscienceA proverb meaning that if one does not do anything wrong, they have no reason to fear being caught or punished.
- 平生不做亏心事，半夜敲门心不惊 píngshēngbùzuòkuīxīnshìbànyèqiāoménxīnbùjīng rest with a clear conscienceLiterally "if one does no wrong during one's life, a knock at the door at midnight will not cause alarm"; a clear conscience is the best protection from fear.
