许诺爱你一生承诺爱你一世
[xŭ nuò ài nĭ yī shēng chéng nuò ài nĭ yī shì]
I Promise To Love You For Life. It expresses eternal love and devotion. The two phrases '一辈子' (lifetime) and '一生世'(lifetime) here are used for emphasis and rhyme in Chinese. This shows determination in staying by the loved one through life's ups and downs.