Lin Yanqiu, a modern military researcher, was reborn as A Yan, a bannerman boy from Shuntian Prefecture in 1901. The Eight-Power Allied Forces trampled the alley to pieces, and the German soldiers wanted to occupy his yard. He relied on historical memory and used fake bronze fragments to temporarily retreat from the powerful enemy. Faced with the shadow of the "Xinchou Treaty", he hired a blacksmith to make farm tools and survive. In the darkest moment, he used his meager power to leverage history and move towards the light step by step.