The Case Has Been Solved, Zhu Di Is Also a Remnant of Jianwen

In the fourth year of the Jingnan Campaign, King Zhu Di of Yan invaded Nanjing, and Emperor Jianwen Zhu Yunwen burned himself to death in the palace. That month, Zhu Di led his ministers to pay homage to the Xiaoling Mausoleum, only to see blood and tears in the eyes of the portrait of Taizu. Countless insects and ants clung to the portrait and composed a poem: "Jianwen won the robe and crown before he died, and the rebellious son deceived heaven and usurped the golden ring." The next day, one of the heroes of Jingnan was found to have committed suicide at home. There were bloody words on the wall corresponding to the second half of the poem: "Even if the yellow robe inherits the purple edict, the chaos of regicide will not be concealed for a long time." For a time, the morale of the troops in Nanjing was shaken. Many surrendered troops cried out that they were sorry for Taizu's spirit in heaven, and actually revolted. Zhu Di, who was on the hospital bed, was furious and ordered the officials to solve the case and arrest the culprit within a time limit. Otherwise, they would kill to stop the killing and Jinling would be washed with blood. Qi Qing was unlucky enough to become a ninth-grade official in Jinling City. In order to survive, he began to solve various mysterious cases manipulated by Jianwen's remnants.