Thirteenth Lamp

--- At 1:47 in the morning, Zhou Wei raised his head from the computer screen, his neck as stiff as rust. His was the only light on the entire twelfth floor that was still on. The CBD outside the floor-to-ceiling windows has sunk into the night, with a few windows lit up, too far apart, like solitary lights on the sea. He rubbed his eyes, closed Excel, got up and went to the tea room to fill up the water. The voice-activated lights in the corridor turned on one by one as he passed by, and then turned off one by one behind him. There is a special aura in this kind of office building late at night, and all sounds are amplified - his own footsteps, the hum of the central air conditioner, and some indescribable, tiny movements. The pantry is at the end of the corridor, near the fire escape. When he was getting water, he habitually glanced at the fire evacuation map posted on the wall. Then he froze. He had seen that picture countless times and could recite the layout with his eyes closed - elevator room, men's and women's toilets, tea room, and twelve offices. But at this moment, he stared at the picture for five seconds, suspecting that there was something wrong with his eyes. At the top of the evacuation map, there is a number clearly marked: 13F He took a step forward and pressed his fingers on the acrylic board. The layout of 13F is exactly the same as that of 12F, even the location of the fire hydrant is exactly the same. The only difference is that the tea room on 12F is marked "Paper Room", while the corresponding position on 13F has three words written on it that he has recognized for a long time: reception room. Zhou Wei's handle