你像太阳照亮我心房我像月亮守候我身旁
[nĭ xiàng tài yáng zhào liàng wŏ xīn fáng wŏ xiàng yuè liàng shŏu hòu wŏ shēn páng]
This expresses a sentiment that one person feels about the other as vital as the sun that illuminates one's heart and presence like the moon constantly by the side. A romantic way to depict reliance and emotional support between two people.