幸福是因为你在甜蜜是因为有你
[xìng fú shì yīn wéi nĭ zài tián mì shì yīn wéi yŏu nĭ]
In English, it says 'Happiness is because you are there, Sweetness is because you exist'. Expresses joy and appreciation for someone, saying their presence alone makes one's life blissful.