The mentor passed away suddenly, leaving Shen Jiming only a poem written in fanqie. After deciphering, there are only two words: Zhaoling. Twenty-one zigzags, a set of codes that have been hidden for thirteen hundred years; a revised copy, an organization that never existed. He thought he was looking for an authentic work, until he discovered that the authentic work contained the last stop of the national jade seal. And the person guarding this secret has been waiting for him for thirteen hundred years. (This story is based on a real historical mystery, and neither the characters nor the organization exist)
