深夜不及人心薄凉不过人心
[shēn yè bù jí rén xīn bó liáng bù guò rén xīn]
Deep night doesn’t cool off before human heart, nothing matches its coldness either. This phrase suggests the indifference, complexity, and cold nature of human relationships, highlighting that in comparison to the depth and warmth, human hearts may seem distant or cold, especially noticeable during late nights.