Three years ago, a sentence appeared on all screens around the world at the same time: [Please follow the rules to ensure survival. Since then, the elevator will stop at a non-existent floor, the time of death will be written in advance in hospital medical records, and a resident's name will be deleted from the community bulletin board every day. People who are involved in the "Copy of Rules" can only leave alive if they understand the rules. In order to find his sister who had been missing for half a year, Lin Feng took the initiative to enter the contaminated area, but found a red pen in the first Blood Moon Apartment. [Resident Rules] 1. It is prohibited to take the elevator after 23:00. 2. If you hear someone calling for help on the 13th floor underground, you must go immediately. 3. If you find that the rules have been altered, please do not believe that you are still human. Some people choose to ignore the second rule, and their names disappear from the door plate the next day; some people obey the first rule, but are trapped in the elevator that rises forever. The rules contradict each other and death is enforced to the letter. And Lin Feng discovered that the red pen can change the rules. Only one word can be changed. Every time it is changed, a piece of memory will be lost, and a line of unfamiliar typeface will appear on the skin. He can't break the strange stories, he can only correct the loopholes in the law of death. When he changed "must go immediately" to "no immediate access", the whole building's broadcast sounded at the same time: [An illegal proofreader has been detected. ] [New rule: All residents are asked to find Lin Feng within ten minutes.