Nails began to grow on Xie Jin's left hand, and Shen Yebai smelled his sister's scent. In the old city at midnight, there are crowds of regretful shadows. No one looks back, and no one can rest in peace. The papermaker's stand-in, the traffic of the live-streaming girl, Uncle Mute's blood monument, the regret tea in the tea house, every "Repent Night" incident is accelerating the awakening of the earth's veins. When Xie Jin's left hand wanted to tear him apart, and when Shen Yebai was forced to open his eyes - they discovered that the real regret was not that they took the wrong path, but that they had personally pushed away the person who was willing to look back.