When the fireball technique was still regarded as a miracle, a genius boy from the 21st century was already calculating steam pressure, steel-making curves and disease spread models. When Linn woke up, he was just a foreign adopted son in the border barony who could be purged at any time; what he faced was the monopoly of nobles, the judgment of the church, the contempt of mages, and a world that had been locked away by magic for thousands of years. No one knows that he has a whole set of modern physics, biology, chemistry and industry systems hidden in his mind. From soap, glass, and gunpowder to machine tools, railways, and the torrent of armor, he will step by step turn "miracles" into replicable technologies, turn territories into factories, and rewrite the crown from a divine gift to a medal of productivity.
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