乘虛而入 Save Sign in to save words Simplified: 乘虚而入 chéngxūérrù ㄔㄥˊ ㄒㄩ ㄦˊ ㄖㄨˋ to enter by exploiting a weak spot (idiom) to take advantage of a lapse Character by character 乘(chéng)surname Cheng 虛(xū)emptiness 而(ér)and 入(rù)enter A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0