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Gu Yan, a bankrupt mechanical engineer, was bound to a mysterious "ancestor simulator" system at the lowest point in his life. His consciousness could transcend time and space and possess the body of Gu Yan, a tenant farmer from a poor family with the same name and surname in the late Eastern Han Dynasty! [Novice mission: get rid of the identity of a young man! Failure penalty: obliteration! The cold system prompts are like a death knell. In a desperate situation, Gu Yan could only gamble on the engineer's last trump card - shouting at the whip-raising soldier: "I can build a new plow! Save cattle and people, and cultivate ten acres a day!" A faint blue light and shadow from the future, struggling to outline the "curved shaft plow" pattern that subverted the era in the mud, instantly froze the falling whip. Since then, the modern bankrupt society and the poor ancestors of the Eastern Han Dynasty have been forced to be bound on a thorny road to save the nation. Gu Yan controlled the body of his ancestor, started with a curved shaft plow, built workshops, developed water conservancy, smelted steel, and made firearms, creating an industrial fire that spanned thousands of years in troubled times!