Tā zhège rén gōngshì-gōngbàn, cóngbù gěi rén kāi hòumén.
He does everything by the book and never gives anyone special treatment.
Tips
usage
Can be positive (impartial, fair) or negative (rigid, bureaucratic), depending on context. When someone says 公事公办, they may be signaling they will not bend rules for personal relationships.
