平生不做亏心事，半夜敲门心不惊

He who never wrongs others does not fear the knock in the night. / Rest with a clear conscience.

surname Ping

flat / level / equal / to tie (make the same score) / to draw (score) / calm / peaceful / abbr. for 平聲|平声[ping2 sheng1]

all one's life

to be born / to give birth / life / to grow / raw / uncooked / student

no; not so / (bound form) not; un-

to make; to produce / to write; to compose / to do; to engage in; to hold (a party etc) / (of a person) to be (an intermediary, a good student etc); to become (husband and wife, friends etc) / (of a thing) to serve as; to be used for / to assume (an air or manner)

deficiency / deficit / luckily / it's lucky that... / (often ironically) fancy that...

a guilty conscience

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

shameful deed

a load on one's mind / worry / CL:宗[zong1],樁|桩[zhuang1]

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

half / semi- / incomplete / (after a number) and a half

midnight / in the middle of the night

variant of 夜[ye4]

night

to hit / to strike / to tap / to rap / to knock / to rip sb off / to overcharge

to knock on a door

gate / door / CL:扇[shan4] / gateway / doorway / CL:個|个[ge4] / opening / valve / switch / way to do something / knack / family / house / (religious) sect / school (of thought) / class / category / phylum or division (taxonomy) / classifier for large guns / classifier for lessons, subjects, branches of technology / (suffix) -gate (i.e. scandal; derived from Watergate)

to startle / to be frightened / to be scared / alarm