to do things in a strictly businesslike manner (idiom)
Definitions (粵典–words.hk)
動詞
唔偏私,跟足規矩執行公務 to do business without giving favours
就算佢係我姪仔,我作為管理層都會公事公辦。
就算佢系我姪仔,我作为管理层都会公事公办。
zau6 syun3 keoi5 hai6 ngo5 zat6 zai2, ngo5 zok3 wai4 gun2 lei5 cang4 dou1 wui5 gung1 si6 gung1 baan6. Even though he's my nephew, as part of the management, I won't be giving him any special favours.