Lin Mo, a 21-year-old junior student in the history department, died suddenly after staying up late at night, and his soul traveled to become the Xinwang Zhu Youjian before Tianqi ascended the throne seven years ago. How can a modern person who knows the outcome of history use the knowledge of "paper war" to break the situation in real bloody politics and war? When his intervention begins to trigger the "butterfly effect" and history deviates from its original trajectory, what will he rely on to continue moving forward?