You Said You'd Be a Security Guard, So Why Do You Solve Cold Cases Every Day?

[At midnight sharp, my security booth receives crime alerts from the future] My name is Chen Yan. I'm 26 and work the night shift as a security guard at Longhu Residential Complex. The scar on my right shoulder is from three years ago, when I got it saving a girl. Little education, low pay, and a future with no surprises. Until one rainy night, a cold mechanical voice suddenly rang in my head: “Midnight Crime Alert System fully loaded.” “Starting today, every night at midnight, you will receive a clue about a crime that will happen tomorrow.” “Notice: One clue per night, content chosen at random. You cannot refuse.” I thought I was going crazy. Until the next day, when I heard a girl crying for help in the basement of Building 7, exactly where the alert had said. I rushed in, smashed the chains with my baton, and rescued the girl who had nearly been sold. In that moment, I realized that maggots had long been crawling beneath this city's glittering facade. The police were swamped with old cases and had no time to spare. So I would do it. I pried open the secret entrance of a burglary gang, relying on the patience I'd gained from staking out an alley for three days and three nights. I exposed an international scam using ventriloquism I'd learned from the old man downstairs. I faced off against a gang in an unfinished building, armed with nothing but the life I'd clawed back and a stubborn streak that refused to back down. My security booth became the city's most secret command center. Auntie Wang, the cleaner, was a retired forensic trace expert who had disappeared from the field thirty years ago. The delivery guy had once been a reconnaissance soldier in the special forces. The hacker girl at the internet cafe, the bar owner, the mute mechanic...