Cheng Yanqing, a student from a poor family, took the exam with an ancient inkstone passed down from his ancestors, and the answer revealed in the inkstone was revealed. After high school, Gu Yan was mysteriously stolen, and he was forced to enter the mysterious "Foreign Object Market" underground in the capital - where rare objects from the imperial examinations were sold, which could reveal secrets of heaven and change destiny. The real controller of the market is actually Si Tianjian, who observes celestial phenomena and is in charge of national destiny. In order to regain the ancient inkstone and solve the mystery of his life experience, he had to deal with the treacherous foreign object transactions and the undercurrent of the court, but he did not know that he had already become a pawn in a larger chess game.
