看你乐我很高兴
[kàn nĭ lè wŏ hĕn gāo xīng]
'Seeing You Happy Makes Me Happy Too' signifies empathy towards others' pleasure - if you are happy, I feel joy along with you. In essence, happiness and positivity can be shared between people; when others laugh, we join them in the joy. This conveys a sentiment that finding joy in other people's contentment is fulfilling enough for us.