Can be awakened by a short message, why (don't copy a bunch of nonsense)

Some people sleep very lightly. No matter how tired you are during the day, you will open your eyes from time to time when you sleep at night. By this time, their brains had fallen asleep. But some cranial nerves are not completely relaxed, so they are still conscious.

You are his girlfriend, of course, it's very important to him, so the phone rings, and you are half asleep, and you will be refreshed ... hehe. When I care about you, you still think he is sick ... how sad he is to know.

Besides, the ringtone of the mobile phone is not small, and most people will be woken up. ...