Redhill Apartment Rules

On the first day I moved into the Red Mountain Apartment, I picked up a piece of House Rules under the door. Twelve rules, each one revealing indescribable weirdness—— You can't turn on the tap at three o'clock in the morning. You can't talk to people in red in the elevator. If there is a child crying outside the door, you must not open the door. I thought it was a prank by the property management until the first night when the rules started to come true one by one. I wanted to call the police, but the call never got through. I wanted to run out, the whole apartment was like a huge maze. I wanted to ask my neighbors for help, but behind every door I knocked on, there stood a person who shouldn't exist. Here, the code is the only reason to live. And the most terrifying thing is—— On the back of that code is Article 13. That one was written in my handwriting.