倾城一世只为博她一笑倾城一笑只为爱他一世
[qīng chéng yī shì zhĭ wéi bó tā yī xiào qīng chéng yī xiào zhĭ wéi ài tā yī shì]
Translated to 'A Whole Life's Effort Just to Gain Her Smile; A Momentary Smile for Him Is Love Entirely'. It means dedicating a lifetime's effort just to win someone's smile, or in return for their love, willing to live for them entirely. Here lies an idealized view of romantic dedication.