Cheng Yan, a graduate student in the Department of History, accidentally touched a Song Dynasty copper slip engraved with strange symbols during an archaeological excavation. His soul traveled back to the late Northern Song Dynasty and became an unknown library clerk in Bianjing. He thought he could use the knowledge of future generations to seek good fortune and avoid disaster, but he found himself in the middle of a huge conspiracy that could overthrow the dynasty. Party disputes in the court, border wars, mysterious sects... All seemingly unrelated events point to a lost book that is said to be able to "reopen the secrets of heaven." Cheng Yan can hear the "whispers" of history books and gain insight into the concealed truth, but every step of exploration leads him towards a deeper trap. When the roar of the golden soldiers' iron hooves comes from far and near, he not only needs to solve a thousand-year mystery, but also has to start an ultimate game that spans time, space and cognition with an "intelligent" trader hidden in the darkness of history - the national master of the Kingdom of Jin, Wanyan Zonghan. The truth of history is far more thrilling than what is recorded.
