Yanamino绵里藏针
mián lǐ cáng zhēnmianlicangzhen
- lit. a needle concealed in silk floss (idiom)
- fig. ruthless character behind a gentle appearance
- a wolf in sheep's clothing
- an iron fist in a velvet glove
Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences