你是我黎明的太阳你是我黄昏的落日
[nĭ shì wŏ lí míng de tài yáng nĭ shì wŏ huáng hūn de luò rì]
'You are my sun at dawn, you are my sunset at dusk' poetically describes the person being an all-encompassing source of light and closure in one's life, from beginning to end, highlighting the significance and omnipresence of this relationship.