qiāo mén zhuān
lit. a brick as a door knocker (idiom); fig. a temporary expedient
to use sb as a stepping stone to fortune
bù zuò kuī xīn shì , bù pà guǐ qiāo mén
He who never wrongs others does not fear the knock in the night.
Rest with a clear conscience.
píng shēng bù zuò kuī xīn shì , bàn yè qiāo mén xīn bù jīng
He who never wrongs others does not fear the knock in the night.
Rest with a clear conscience.