I Conquer the Myriad Races with Weapons

Version One: High-Octane Power Fantasy (focused on overwhelming superiority and a lone city's comeback, ideal as the main promotional version)

Transmigrate, and you're already in a death trap: a million-strong foreign cavalry force lays siege outside, while within the city a powerful minister plots to open the gates and surrender.

In this desperate situation, Lu Chen activates the [Primordial Crafting Blueprints].

No heaven-defying cultivation arts, just hardcore schematics: [Basic Gunpowder], [Blast Furnace Steelmaking], [Early Firearms].

As the enemy closes in, the great clans sneer, "You think a few pieces of ordinary iron can stop experts of the Spirit Realm?"

Lu Chen says nothing. He assembles the blueprints, and a first-generation heavy cannon is soon mounted atop the city wall!

"Boom!"

A solid iron shot, wrapped in acrid clouds of gunpowder smoke, tears through the foreign commander’s protective aura and blasts him and his horse into scraps!

The cold-faced female commander holds a blade to his neck. "Who are you, really?"

Lu Chen pushes aside the icy blade, his eyes burning with fervor. "I don't cultivate immortality or martial arts. I teach the laws of physics to all races."

"Starting with this ruined city, I will make the whole land bow before me!"