瞳孔渗透的悲伤
[tóng kŏng shèn tòu de bēi shāng]
It means 'Sadness seeping through the pupils,' which implies that the depth of this person's sadness reaches the eyes – the windows of the soul. A metaphorical expression of profound sadness and depression. The eyes can reflect inner emotions according to ancient beliefs, and it means that this kind of grief is deeply rooted and apparent even in appearance.