Normally you will found this kind of stuff in Hongkong Comedy movies, but this time someone just put it into production. The real products sold well in China nowadays, especially in the shop around schools.
Miss Yang, a teacher in a middle school, found 2 students in the rear row kept on nodding in her class days ago. She didn't find anything different in the beginning, by and by, she found their eyes looks a little bit odd. When she get close to them, she's surprised by what she saw: two sleeping student snored with eye masks on.
This two students confessed that they got eye masks in a shop outside of school, and they put it on to avoid being catch by teacher from their sweet dream.
The owner of one shop said, "this kind of eye mask sold well in my shop, it's more than 100 pairs of eye masks one day.