海誓山盟亦会分开物是人非自知冷暖
[hăi shì shān méng yì huì fēn kāi wù shì rén fēi zì zhī lĕng nuăn]
It reflects a melancholic thought about vows made that may be broken, noting how relationships can end even amidst grand promises while also expressing that people and circumstances inevitably change over time. It conveys emotional experiences of warmth and coldness through these changes