尽忠 Words — Dong Chinese Dictionary

jìnzhōng

to be utterly loyal

尽忠报国 jìnzhōngbàoguó loyal and patriotic

To serve one's country with absolute loyalty; to be loyal and patriotic to the end of heart.
尽忠职守 jìnzhōngzhíshǒu to fulfill one's duties

to be fully devoted to one's post; to fulfill one's duties with complete loyalty
进思尽忠，退思补过 jìnsījìnzhōngtuìsībǔguò to serve loyally and correct mistakes

when in office, one thinks of serving with loyalty; when out of office, one thinks of correcting past mistakes