一丝心动
[yī sī xīn dòng]
Translated as 'a thread of heartbeat,' meaning a slight flutter or movement in the heart due to emotion. Usually used to express when someone is struck by small but meaningful instances or touches from another person, resulting in slight infatuation or admiration. It can describe the initial sparks of love or fondness for another person, encapsulating subtle yet profound emotions triggered by someone special in one's life.