蓝海的忧伤不及你
[lán hăi de yōu shāng bù jí nĭ]
'Saddness of the blue sea can't compare to you'. In this case, 'blue sea' is usually associated with boundless expanse and depth, so this user compares his/her beloved or something/someone special to this kind of vast melancholy which surpasses that of a sea's sorrowfulness.