Su Yuan, a former philosophy lecturer, suffered a sudden spiritual collapse and lived in seclusion in an abandoned church, refusing all human contact. There is unspeakable trauma hidden deep in his soul - an old case has left him with invisible shackles. One day, a strange boy broke into the church and brought an unsigned letter of confession. The words seemed to be entangled with Su Yuan's past. Su Yuan wanted to stay out of the matter, but he read the secret in the letter that he had never revealed. He embarks on a journey of pursuing the truth and self-salvation, encountering all kinds of souls, and gradually discovers that redemption is not a simple forgiveness or forgetfulness, but a process of facing oneself and redefining life. The novel depicts the fission and reshaping of Su Yuan's soul with a calm and concise writing style. It interweaves introspection, faith and the complexity of human nature, and shows how people can re-establish contact with the world in extreme loneliness.
