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"1. If you feel the door of the dormitory being opened, do not doubt it; that means the door has been opened."
"2. If you hear something knocking on your window, or calling your name from outside, do not doubt it; there is indeed something outside the window."
"3. If you hear the sound of the wind, the sea, a flute, a song, or any sound that might make you think of the sea, do not doubt that you have heard incorrectly; please convince yourself with the utmost conviction: 'This is the dormitory providing sleep aid music for students with insomnia,' and try not to think too much about it in this direction."
"Do not concern yourself with whatever is opening the door, do not concern yourself with whatever is knocking on the window, and never attempt to find the source of these noises. Please, while believing in their existence, ignore them."