看不清你的面容猜不透你的悲伤
[kàn bù qīng nĭ de miàn róng cāi bù tòu nĭ de bēi shāng]
It means being unable to fully understand or read someone emotionally and visually - specifically, feeling unable to see their expression and also to grasp their pain or emotional turmoil. There's an undercurrent of frustration or helplessness in expressing one's struggle to truly connect with another on an emotional level.