A civil servant should serve the public and do his duty, never abusing power for personal gain.
Tips
usage
Mostly in four-character phrases of official praise: 廉洁奉公 (honest and devoted to public duty), 克己奉公 (putting the public before oneself), 奉公守法 (law-abiding). 奉 is 'to carry out respectfully' and 公 'public affairs'.