他是贼偷走了我的心
[tā shì zéi tōu zŏu le wŏ de xīn]
'He is a thief who stole my heart.' A romantic expression signifying deep affection or infatuation, where 'stealing hearts' metaphorically denotes someone winning over another’s affections quickly or unexpectedly, similar to the English idiom 'stealing someone's heart'.