长着犄角的恶魔顶着光环的天使
[zhăng zhe jī jiăo de è mó dĭng zhe guāng huán de tiān shĭ]
Referring to 'Devil with horns and Angel wearing halo', it means one has the qualities of being bad (demonic, devilish) and good (divine, pure) within themselves, showing dual natures, the dark and light side in human souls.