Shen Qingyun, a master of chemical engineering, transformed into a poor scholar in a small border county. The family's Susukada was targeted by powerful men, and he was even imprisoned. In order to survive, he burned cement, refined steel, and made firearms. The county magistrate was convinced, the powerful man knelt down, and even the emperor could not sit still. While others were still reciting poems and writing poems, he had already led Datang into the industrial age. This is not farming, this is dimensionality reduction.
