笑容诠释了我给你的爱
[xiào róng quán shì le wŏ jĭ nĭ de ài]
Translated roughly, 'A Smile Tells You How Much I Love You'. It means the user's affection is not just shown in grand gestures, actions, or declarations; but quietly, continuously communicated through everyday smiles, symbolizing genuine care, happiness, and love.