Lin An, a top student in the Department of Strategy at a top university, accidentally traveled to Xiao Heng, the neglected seventh prince of the Yan Dynasty.
Unlike other princes who are eager for the throne, Xiao Heng fully understands the principle of "power comes from the barrel of a gun" and vows never to get involved in the struggle to seize the throne. His only wish is to stay away from the whirlpool of the capital and go to the border to control an iron-blooded army of his own.
Armed with modern advanced military theories, military training methods and strategic thinking, he vowed to create an invincible army in this other world.
