Previously staying at a hotel, the staff would take me to change rooms, and every time before opening the door, they would knock first.

I always thought it was some kind of mystical custom, so I showed respect.
Until today,
I was taking a nap when suddenly someone burst in unannounced.
I damn well prefer sleeping naked.
At that moment, I finally understood—this isn’t some mystical practice, it’s a blood, sweat, and tears lesson. 🙂🙂🙂