梦醒之后再也看不清你的脸
[mèng xĭng zhī hòu zài yĕ kàn bù qīng nĭ de liăn]
It translates into 'Can no longer see your face clearly after waking up from dreams', metaphorically meaning a poignant reflection or regret that after reality (wakefulness) hits one, they cannot hold on to cherished moments (face of loved one in dream).