I Became a Protector General in the Han Dynasty

Reborn into the Han Dynasty, he finds himself a frail scholar who can't even truss a chicken. For opposing Emperor Wu's campaign against the Xiongnu, he's exiled to the frontier, where he'll die beneath the Xiongnu's horses in half a month.

Tang Ye says this plot is all wrong. Reborn for a second life, he should be training troops and horses, winning glory at Mount Langjuxu, and wiping out anyone who dares oppose the mighty Han, no matter how far away they are.