I Entered Taoyuan by Mistake at the Beginning. Is This Da Qin?

Non-official history + political brother + changing history + flat promotion + conspiracy + war + unification of the world + good article. Xue Bufan, a modern programmer, accidentally traveled to the Qin Empire. The laptop he carried with him became his biggest reliance in this strange era. In this era without Internet and electricity, he relied on the modern knowledge stored in his computer to embark on a counterattack across time and space. He used his programming knowledge to improve farming tools, used mathematical algorithms to optimize military formations, and even used modern medical knowledge to treat plagues, gradually emerging in the Qin Dynasty.