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.
平
píng
flat
生
shēng
to be born
不
bù
no; not so
做
zuò
to make; to produce
亏
kuī
to lose (money); to have a deficit
心
xīn
heart
事
shì
matter
,
,
半
bàn
half
夜
yè
night
敲
qiāo
to hit
门
mén
gate
惊
jīng
to startle