Rong Xi was born in a turbulent era and died in a place not recorded in the archives. She was once the youngest assistant at the Imperial Academy of Sciences and the only dissident in the secret laboratory. That winter, the taboo "Spirit Transferring Project" quietly unfolded, and Rong Xi recorded the buried truth on countless cold nights. Faced with the double oppression of power and belief, she chose to flee - not only a physical escape, but also a departure from her ideals. Her story is intertwined with lies and awakening, betrayal and redemption: a trial about the boundaries of human nature. This book uses the writing style of a historian to recreate how Rong Xi wandered between pursuit and memory, and how he used his weak power to shake the cage of the system. She is not a hero, but she ignites the glimmer of truth-seeking in the shadow of history.