"Betrayal Love Song". According to the query of Kugou Music, "Knife betrays lingering" is the lyrics of "Betrayal Love Song". "Betrayal Love Song" was written by Li Suzhen, composed by Xu Changde, and arranged by Hong Jingyao. The excerpts from the song are as follows: Promises betray promises, knives betray lingering, piercing my heart but I can’t see it, I forget to cry out the pain, forget the grudges, and let love numb my crying face.