你笑比哭更心酸
[nĭ xiào bĭ kū gèng xīn suān]
'Your smile is more heart-wrenching than crying'. This name suggests hidden pain, feeling that a smile from someone (probably a person the owner of this ID is in love with) causes deeper emotional distress than their tears. Maybe because the owner believes that they put on false happiness which covers their inner suffering when being smiled.