Iron-Blooded War Emperor: From Border Soldier to Ruler of All Under Heaven

Looking for Stories About Campaigning, Rising Through the Ranks From the Bottom, and the Age of Cold Weapons

I'm looking for books like Tang Yin in Another World.

Looking for Historical Power-Struggle Stories About Conquering the Realm and Unifying the Central Plains

A unified empire.

The Protagonist Builds Power on the Frontier, Rebels, and Expands the Realm

Transmigrate to Ancient Times, Build an Army, Conquer the World, and Lead a Cavalry Force

! ! ! ! !

Historical, Cold-Blooded, Battlefields, Armies, Slaughter, Invincible! System

The protagonist is a general.