金科玉律 Save Sign in to save words jīnkēyùlǜ ㄐㄧㄣ ㄎㄜ ㄩˋ ㄌㄩˋ golden rule key principle Character by character 金(jīn)surname Jin 科(kē)branch of study 玉(yù)jade 律(lǜ)surname Lü A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0