20分钟课堂氛围 讲课声+写字声+翻页声 | 在课上偷偷睡觉kk | 增压系列 | 学习背景音 工作背景音 | STUDY WITH ME | 助眠、放松、学习

https://www.youtube.com/watch?v=UI4_j55f_TM
ASMR - Sleep In Your Lecture (Boring Lecturer, Pencil and Paper Sounds) - Roleplay - Lotsa Tingles