我不勇敢谁替我坚强你不勇敢我替你坚强
[wŏ bù yŏng găn shéi tì wŏ jiān qiáng nĭ bù yŏng găn wŏ tì nĭ jiān qiáng]
These lines emphasize mutual support in tough times. When I'm not brave enough, who will be strong for me? And when you're not brave, I'll be there for you, showing interdependence and care between two individuals during difficult moments.