In the fourth year of Zhenghe in the Northern Song Dynasty, there was an undercurrent surging under the bustling appearance of Bianjing City. Cheng Ciben was a humble porcelain shop clerk who was involved in a shocking case when he accidentally obtained a piece of porcelain engraved with strange patterns. This piece of porcelain can not only reflect traces that ordinary people cannot see, but also allow him to "hear" the historical echoes left on the porcelain. The secret treasure of the firewood kiln stolen from the palace, the successive deaths of court officials, the mysterious folk organization "Porcelain Language Society"... All the clues point to the same direction - someone is secretly collecting "evidence" that can prove the existence of the royal bloodline of the previous dynasty. Cheng Ci was chased by various forces, and he could only rely on extraordinary patience and meticulousness to get through the fog. When he finally pieced together the truth, he discovered that the "benefactor" who had been guiding him behind the scenes to solve the case was actually the mastermind of all the conspiracies, and this situation had been laid out ten years ago.
