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When Chen Yu, a modern graduate student, dreamed every night that he became an ancient death row prisoner, he thought he was just under too much pressure - until he discovered that the tax reform plan written in calculus in his dream actually saved "his" life, and items from the two worlds began to be strangely exchanged. Now he is preparing for exams during the day and reforming at night, stirring up the millennium court with his "Five-Year and Three-Year College Entrance Examination Simulation". In the dark side of history, eyes have been fixed on this "knowledge smuggling" across time and space.