一丝不苟

yīsībùgǒu

HSK 7

一丝不苟 — yīsībùgǒu

1. not one thread loose (idiom); strictly according to the rules; meticulous; not one hair out of place

   他做事一丝不苟，大家都很佩服。 tā zuòshì yīsībùgǒu dàjiā dōu hěn pèifú — He does things meticulously; everyone admires him.