The song "Thin Man" was sung by Ding, composed by Ding, written by Ye Xier and arranged by Ding and Cheng Zhenxing. This song expresses that everyone has an ideal lover in his heart, but reality is always the opposite of ideal.
Classic clip of the song: "You always laugh at me because I have nothing and don't deserve love, but have you seen the thin man hiding in my body?"