我用三世年华换你一世烟花我用一世烟花换你三世年华
[wŏ yòng sān shì nián huá huàn nĭ yī shì yān huā wŏ yòng yī shì yān huā huàn nĭ sān shì nián huá]
Literally means 'I exchange three lifetimes for one moment with you/I’d spend my one glorious moment to exchange your three lifetimes with me.' A dramatic declaration suggesting profound dedication or romantic sentiments