Human Reverberation

In the last car of the last subway train, there are two rows of seats that are never occupied. It's not because it's dirty, it's because people who have sat there say they saw people who shouldn't be there. Shen Du could hear the "reverberation" of the deceased: an obsession stuck in the world, an unfinished sentence, an unfinished thing. He has no work badge, no superior, and no official status. He's just an officious former architect and a folklore undergrad rummaging through lost and found items. Until he picked up a one-way ticket that said "I want to get off." The woman who died on the last subway train three years ago, her reverberation is still circulating on the journey that will never arrive at the station. She didn't want to get out of the car - she wanted her son to put on that little dinosaur jacket one last time. The reverberation is unclear and the soul remains. But whoever walks in wearing those white cloth shoes will remain in the memory of the deceased forever if he cannot come out within seven days. Not crossing the soul, only clearing the reverberation