酷区温柔鬼
[kù qū wēn róu guĭ]
The term '鬼' (ghost) here refers metaphorically to a spirit or entity known more by its character and attributes than any specific visual image. And '酷'(cool)+ '温柔'(gentle). So, “酷区温柔鬼” indicates that someone might look cold on the surface as if living coolly in their zone but deep inside they possess gentle, warm hearts or souls.