事無大小

see 事無巨細|事无巨细[shi4 wu2 ju4 xi4]

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

not to have / no / none / not / to lack / un- / -less

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

dimension / magnitude / size / measurement / large and small / at any rate / adults and children / consideration of seniority

small / tiny / few / young