一丝不苟 (yī sī bù gǒu) | Meaning: not one thread loose (idiom); strictly according to the rules | Chinese Idiom with Pinyin & Origin

cautious and timid (idiom); prudent · careful小心谨慎xiǎo xīn jǐn shèn

(idiom) cautious; careful; prudent小心翼翼xiǎo xīn yì yì

quiet and reserved · discreet (or serious) in speech and manner不苟言笑bù gǒu yán xiào

conscientious · earnest · serious · to take seriously · to take to heart认真rèn zhēn

serious about the matter郑重其事zhèng zhòng qí shì

meticulous planning and careful accounting (idiom)精打细算jīng dǎ xì suàn

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