I Thought It Was Da Qin, but I Didn't Expect It Was Prehistoric!

Zhang Xuan traveled through the Qin Dynasty. Within three years, he invented papermaking, the columbine, the curved shaft plow, gunpowder, the steel pouring method... And other important tools of the country. Just when the Qin army was about to sweep across the world, the system awakened. The system told him. This world is not only the Qin Dynasty, but also has gods and Buddhas all over the sky. It is a pure prehistoric world. Zhang Xuan was confused. "What the hell?" "I am in the prehistoric world, modifying history?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.