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Unsystematic pure time travel, relying on IQ and knowledge to control the field, don't enter if you don't like it. The protagonist travels to a farm tractor family in the French Republic and becomes the third generation of quasi-rich people. The only fly in the ointment is that it is near Paris. The Germans will soon arrive here. If you want to keep the family, you must save France. Gallieni: "God, the enemy actually sent a flank in front of us!" Joffre: "It can't be such a good thing, can it be a trap?" Protagonist: "The dishes are already prepared, but you do it, and you want me to deliver it to your mouth?"... German Army: "This is a tractor factory? What the hell are these invulnerable steel monsters?"

No system, pure time travel, don't enter if you don't like it. Am I Bismarck's son? The hard work of unifying the Federation and leading Prussia to become one of the great powers ended in disgrace? No, I won't let this happen. I need a new identity. Make a lot of money and become an invisible rich man! Then......