I Have Been Keeping Vigil on Earth for Three Thousand Years

In the thirty-seventh year of Qin Shihuang's reign, the alchemist Chen Yan accidentally drank half of the elixir and became immortal. He joined the Night Watch Division and served as a night watchman for three thousand years. I have seen the will-o'-the-wisps on the night of Farewell My Concubine, the night march of hundreds of ghosts in Chang'an during the prosperous Tang Dynasty, and on the longest winter night in the late Qing Dynasty, I personally buried my comrades who had stood side by side for thousands of years. After a cycle of sixty years, "night" falls, the ancient gods resurrect, and strange stories happen again, but the world knows nothing about it. When it comes to Chen Yan's generation, he is the only one left in the Vigil Division. Now he has opened an antique shop in Jiangcheng, with three rules hanging at the door: 1. No counter-offering at night; 2. No matter how much money you pay for items of unknown origin, we will not accept them; 3. After closing time, no matter who you hear knocking on the door - don't open it. Until three o'clock in the morning that day, the voice of an old acquaintance from three thousand years ago and a long-dead senior brother came from outside the door: "Xiao Yan, open the door, night is coming." [Eternal life flow + weird rules + historical research, two-line narrative, no system in the whole process, decisive killing]