你是世界上最美丽的新娘你是世界上最英俊的新郎
[nĭ shì shì jiè shàng zuì mĕi lì de xīn niáng nĭ shì shì jiè shàng zuì yīng jùn de xīn láng]
It literally says 'You are the most beautiful bride in the world, you are the most handsome groom in the world'. Expresses the highest admiration for a couple on their wedding, highlighting love's beauty.