Yuan and Ye Xue: the Last Case of Zaifu in the Tang Dynasty

In the ninth year of Yuanhe, the Huaixi vassal town supported its troops and became self-reliant, and the war to eliminate the vassal was about to begin. A series of murders occurred in Chang'an: an official of Honglu Temple suddenly died in a secret room at the city gate, and an eminent monk fell to his death from a tower. The deceased were all witnesses of the Jingyuan rebellion twenty years ago. Only the bloody word "Jingyuan" and strange nursery rhymes were left at the scene, which shocked the government and the public. The 69-year-old former prime minister Song Qingyan was a close disciple of Yan Zhenqing and the only living witness to the Jingyuan rebellion and Fengtian breakout. In his dying years, he suffered from an old leg injury and was ordered to take on this murderous case that was related to the fate of the Tang Dynasty. On the one hand, there are interlocking murder cases in secret rooms, with the real murderer hiding in the darkness of the court closing in on him step by step; on the other hand, the eldest son is framed as the number one suspect, and the estrangement between father and son is on the verge of breaking down; powerful officials are connected to the vassal, party struggles are raging, and disciple Lu Xun sneaks into Huaixi alone and narrowly escapes death. The end of all the murders is that King Qin's plan, which has been hidden for twenty years, reveals the truth. It is the ultimate secret of Yan Zhenqing's unjust death. He used the last year of his life as a chess piece, not only to clear the wrongs of his mentor, but also to protect the crumbling country for the Tang Dynasty.