Due to their illegality, most of these youth-oriented dance halls sport signs proclaiming themselves as coffee houses, Western restaurants, or Cantonese-style dim-sum restaurants, and have subsequently become known as "underground nightclubs."
這些地方不同於風月場合的成人舞廳；多半打著咖啡廳、西餐廳，或港式飲茶的招牌，一般統稱為「地下舞廳」。