Set against the backdrop of the Anxi Protectorate of the Tang Dynasty, this is the legendary story of modern geologist Xia Changgong, who transmigrates through time and combines modern knowledge with ancient wisdom to help the Anxi Army repel a massive Tibetan invasion. He rises from an ordinary scout to become the head of the weapons bureau, improving siege defenses and inventing devices such as rotating fire-oil bombs and parabolic rockets. He also outsmarts the Tibetans' Greek fire and magnetic storm formations. Through their life-and-death struggle, Xia Changgong forges deep friendships with Ashina Yanran, Yuchi Yuanguang, Guo Xin, and others, facing trials such as blasting through an icebound river, a city engulfed in fiery rain, and fierce battles amid magnetic storms. The novel depicts thrilling scenes of war while delving into profound themes of political power, human nature, and responsibility to one's country. Together, these elements create a vast and turbulent world of Anxi. Through its steadily unfolding plot and complex relationships, the story brings to life its grand theme: “Anxi will never fall, and its beacon fires will burn forever.”
