Great Qin: I Turned the First Emperor Against His Own Empire from the Start!

Zhao Che transmigrates to the Great Qin Dynasty, only to discover that he has a new, dirt-cheap dad, and that the dynasty is less than two years away from its fall! As luck would have it, Zhao Che awakens a sign-in System. He starts farming and stockpiling grain, smelting iron and refining salt, and building up and training an army. "Dad, Emperor Qin Shi Huang will die next year. When that happens, we'll raise the rebellion banner and overthrow Great Qin." Just as Zhao Che has everything ready, his cheap dad gives the order, and a hundred thousand Great Qin troops descend upon them. "Enough pretending. I'll come clean: your dad is Qin Shi Huang!"