Mo Guan of the Great Song Dynasty

In the seventh year of Xining in the Northern Song Dynasty, Bianjing City was established. Shen Yan, the owner of Yanyunzhai, is the last descendant of the ink official and can distinguish, read and make ink. A piece of ancient ink can distinguish authenticity from falsehood, read secret letters, and reveal the truth that has been hidden for twenty years. His father died in an "accident", leaving only half of Taipingxingguoyumo. When Shen Yan used the technique of ink diagnosis to uncover the secrets in the half of the ink, he discovered—— His father's death involves the truth about the Mo Society, the clan, and even the sound of Zhu Ying's axe. The ink is black, but it records the truth. This time, he wants to use ink to seek justice for his father.