灯红酒绿折煞人心
[dēng hóng jiŭ lǜ zhé shà rén xīn]
This nickname refers to the hustle and bustle of city nightlife (bright red lights and green wine), and implies the overwhelming or intoxicating power of this scene on people's hearts. The term 'fold/defeated one’s heart' suggests that people can feel outdone or conquered emotionally in these lively night scenes.