"Echo syndrome" breaks out around the world, and clear memories of other people's lives begin to flash in some people's minds. Sociologist Shen Qingchuan discovered that these "echoes" are not random, but all come from the residents of a "Twilight City" that does not exist on any map. What's even weirder is that all "recipients" are being assimilated by the memory and gradually become the original owners of the memory. Shen Qingchuan's own mind also began to resound with the memory of a pianist, and the other person's end was exactly three days later at midnight.
Protagonist: Shen Qingchuan, a scholar who is supremely rational. In order to fight against erosion, he must find the city between reality and fiction before he disappears.
