bīng​mǎ​wèi​dòng​liáng​cǎo​xiān​xíng

logistics comes before military maneuvers

兵马未动,粮草先行 兵馬未動,糧草先行 bīng​mǎ​wèi​dòng​liáng​cǎo​xiān​xíng
logistics comes before military maneuvers
provisions and supplies must be ready before troops move; used as an idiom to mean that whatever one does, one must first be well-prepared