On the eve of the college entrance examination, I received a message from my landlord: Don't open the door tonight and don't answer the knock. Then, the entire building disappeared. I obviously live on the fourth floor, but the rules on the wall say - there is no fourth floor in this building. Strange rules come. If you knock on the door more than three times, you are not allowed to open the door; if you hear the sound of marbles late at night, please do not raise your head; if someone calls your name, no matter how familiar it is, you are not allowed to answer... People who violate the rules will disappear from this world, and no one will remember them. Others survive by working hard, but I rely on my brain to pass the level. The rules said don't open windows, so I took down an entire wall. The rules say there is no fourth floor, so I will go up there myself and see what is hidden behind that door. Those who have passed the customs are welcome to join. ——Before taking the college entrance examination, I passed this building first.
