泪落睫毛投下阴影
[lèi luò jié máo tóu xià yīn yĭng]
It can be translated as 'Tears falling down the eyelashes cast shadows'. It paints a poignant picture of silent crying, where tear droplets clinging onto eyelashes form fleeting dark spots on skin before finally rolling away under gravity pull. Such visual depiction effectively illustrates inner melancholy masked behind composed demeanor.