陪你到天荒地老陪你到世界末日
[péi nĭ dào tiān huāng dì lăo péi nĭ dào shì jiè mò rì]
This translates to 'Stay with you until the ends of time'. The netizen promises endless and deep affection or commitment for another person, showing their intention to accompany the beloved no matter what happens, until eternity.