Great Qin, I'll Come Clean: Your Dad Is Qin Shi Huang

[System, fictional setting, farming, laid-back, moderately satisfying, entirely fictional.] Zhao Le, a history buff who only knows a thing or two, transmigrates to the Qin Dynasty with a System. He had planned to coast through life, but after calculating the timeline, he realized the Qin Dynasty had only five years left. Then the realm would be plunged into an age of rival heroes and fierce competition. To save his own skin, he planned to keep a low profile and develop in secret, then raise an army and rebel in five years. One day, two people showed up outside his estate. After talking for a while, they became business partners. But wait, Xu Fu isn’t sailing across the sea anymore? Why are the alchemists getting executed? Why has the imperial court learned papermaking and printing, too? Five years are almost up. “Fine, I’ll come clean. I’m actually your real father, Qin Shi Huang.”