It is adapted from the original TV series plot of "The Code of Along the River During the Qingming Festival" and continues immediately after the end. After capturing Zou Mian, I thought the case had been closed, but unexpectedly the person who issued the order appeared again and ordered Wen Yue to assassinate the imperial official Zou Xun. Who is "laying out" behind this series of cases? Who is Zou Xun? What's the relationship with Zou Mian? Let us follow this book to explore the truth of the case...