## A life and death puzzle about memory and obsession
Kwong Lingling, a doctor of psychology, has been trapped in the "Mirror City" for three years - a transitional space built from players' memory fragments that restarts every ten days. She is calm and rational, and is the default backbone of the team, but she has never been able to crack the truth about the maze. Every time you approach the exit, someone "disappears" and in reality these people are falling into a coma.
Three days before the thirteenth restart, a girl with long blond hair fell from the sky and smashed through the square sculpture. Chen Aomu - 23 years old, the young head of the Golden Retriever family, smiles like sunshine and talks so much that people want to shut her mouth. She claimed to be the heir of the "Gatekeeper" family, came in to find someone, and helped Kuang Lingling out.
The two formed a team to explore the lost city, and found that all the clues pointed to the same existence - the "Mirror Master". And as the memory fragments are pieced together, the truth gradually emerges
At the same time, Chen Aumu's true purpose was also revealed - she needs to become the new gatekeeper and stay in the maze forever to repair the passage between reality and the game. This seemingly cheerful girl planned to sacrifice herself from the beginning.
Eventually, the labyrinth becomes self-sustaining thanks to everyone's memory contributions, and the exit opens. Kuang Lingling pulled Chen Aomu, who wanted to stay, and said the strongest and gentlest words in the book: "You come out, or I go in. Choose one."
The ten days end and the ten days begin again. This time, it is no longer a dilemma, but a beginning.