Chen Yuan, a professor at Huaxia University of Science and Technology, accidentally traveled to the late Qing Dynasty. When Napoleon's cavalry traversed mountains and rivers and faced powerful ships and cannons, Chen Yuan did not choose to go back to the old path. Instead, he used modern knowledge to upgrade backward firecrackers into automatic rifles, replaced ox carts with logistics trucks, and even used chemical fertilizers to make explosives. He became the "Devil of the East" in the eyes of Napoleon, but the "savior" in the hearts of the Chinese people.
