你的微笑不及她
[nĭ de wēi xiào bù jí tā]
It means 'Your smile doesn't measure up to her'. This online name indicates a person who feels that no matter how nice or bright the user's smile is, it can never surpass someone else's (probably the one they love most). This may express adoration towards a special girl or a bit of self-deprecation and longing.