泪落看不见的伤痕沉默听不见的心声
[lèi luò kàn bù jiàn de shāng hén chén mò tīng bù jiàn de xīn shēng]
'Tears falling invisible scars, silence cannot hear the voice of the heart' implies deep inner pain and sadness that are not easily perceptible by others. It's often used by individuals expressing emotional wounds or sorrows without words or outward signs.