I Traveled Through Time and Became the First Emperor of Qin, and the World Started from the Beginning of Qin

I, my soul from another world have returned, and I am the First Emperor. The six kings are complete, and the four seas are one. Wipe out the princes and collect all the nine states. Books share the same text, cars share the same track, Establish counties and establish laws and regulations. From now on, there will be no country in the world. Since then, the mountains and rivers have been under one master. The eternal hegemony has been unraveled since then. The mountains and rivers of all generations have been named since then. The sky and earth are dark and yellow, ancient and modern come and go, The world begins with Qin!