Zhang Xun, a modern military history enthusiast, accidentally traveled to the late Southern Song Dynasty and became a down-and-out scholar. Faced with the dual threats of the Jin Kingdom and Mongolia, he relied on his profound understanding of history and broad-minded modern knowledge to start from the grassroots and gradually rose to the rank of chief minister of the imperial court. The novel focuses on resourcefulness and strategy: Zhang volunteers to reform armaments, uses military tactics such as "know your enemy and know yourself" from "The Art of War", and designs an ingenious defense system to resolve border crises and promote national rejuvenation. The story avoids bloody and violent depictions and emphasizes victory with wisdom, national unity and the balance of domestic and foreign affairs. Through historical imagination elements, such as improved firearms and intelligence networks, he rewrote the fate of the Southern Song Dynasty and promoted positive values-patriotism, unity, and wisdom to change history.
