看不见光明的恶魔见不得黑暗的天使
[kàn bù jiàn guāng míng de è mó jiàn bù dé hēi àn de tiān shĭ]
It refers to a character torn between dark (demon) and light (angel). It can also describe someone facing contradictions or struggles within, who cannot see a bright future or cope with darkness around.