思念成空私念成疯
[sī niàn chéng kōng sī niàn chéng fēng]
'Si Nian Cheng Kong Si Nian Cheng Feng' translates to 'Missing in Vain and Obsession Turn into Insanity.' This conveys deep yearning or longing which eventually leads to obsessive or irrational thoughts, showing despair, disappointment, and loss of control.