After Being Demoted, the Fiefdom Quietly Exploded into an Unparalleled Human Emperor!

I traveled through time and came to Wei Dynasty for ten years. As a weak young prince, he fought against the enemy and conquered the land, opened up territory for the Wei Dynasty, suppressed the rebels, and conquered the foreign tribes! When she returned in triumph, Wei Hanyan, the empress of the Wei Dynasty, crossed the river and demolished the bridge. She named me King of Tingzhou. In fact, they only asked me to lead two hundred soldiers and wanted me to die on the desolate border where rebellions often occur! If the Dog Emperor is not a human being, then I don't need to be a loyal minister. Gather troops, make swords, develop science and technology... When I return, the Wei Dynasty will be destroyed. I am the peerless human emperor in this world!