我姓陈却衬不出我的心酸我姓刘却留不住要走的你
[wŏ xìng chén què chèn bù chū wŏ de xīn suān wŏ xìng liú què liú bù zhù yào zŏu de nĭ]
Roughly translates to 'My surname is Chen, but it doesn’t highlight my sorrow; my surname is Liu, but I can't keep you who wants to leave'. It's a poetic expression linking one's identity (represented by surnames) with deep-seated emotional pain and inability to retain a loved one.