分开的时候你一滴眼泪没流
[fēn kāi de shí hòu nĭ yī dī yăn lèi méi liú]
Fen Kai De Shíhou Nǐ Yī Dī Yan Lei Méi Liú (When we parted, you did not shed a single tear) signifies deep pain over a breakup, especially from the other party's indifference. This could be an expression of one-sided feelings or disappointment during a parting.