你的微笑痛了我的心
[nĭ de wēi xiào tòng le wŏ de xīn]
'Your smile hurts my heart.' With this name the person probably admires somebody greatly, whose smile leaves a significant emotional mark or stir on the bearer of this net name; the mixed feelings consist not just pure admiration but could contain love, envy, or some other complex sentiment which can sometimes cause a bittersweet reaction when viewing the target's smile.