Shen Shuyan is an ancient book restorer, and he can feel the emotions of the owner of the ancient books with his fingertips. While restoring an ancient book from the Southern Song Dynasty, he felt strong fear and despair, and also found traces of changes in the text. After investigation, we learned that ancient books recorded a literary prison in the Southern Song Dynasty. Literati were hunted down for criticizing the imperial court. Ancient books are the only evidence of the truth.