Core suspense: Why is there a delicate and fragile but intact "glazed lamp" placed next to the body of a minister of household who was burned by fire? Is this lamp the murderer's arrogant provocation, or the deceased's silent last words?
The main line of the story: A seemingly ordinary case of the murder of an official involved an "Old Liulicuan Case" that was dusted twenty years ago. Bao Zheng peeled off the cocoon and discovered that the murderer used the "glazed lantern" as a mark to hunt down all those who knew about it. As the investigation deepens, a huge conspiracy related to border security and court battles gradually emerges. Even Bao Zheng himself becomes a part of this vortex of revenge.