The Japanese bombing tore up the night sky. Lin Mohun, a doctor of science and engineering, passed through his dying apprentice and watched the master's family lying in a pool of blood. In the secret compartment designated by the master, he found half of the "Ordnance Improvement Manuscript". Then the military knowledge base merged with the body's memory, and he instantly mastered the basic principles of firearms. But there was only rusty iron and broken copper in front of me, and not even a file could be found.
He gritted his teeth, used a sewing needle to sharpen the front sight, and used a bicycle chain as a recoil spring. In the leaky woodshed, he knocked out the first improved Mauser that could kill Japanese soldiers. But no one knows: What secrets are hidden in those "locally made" weapons that can subvert the battlefield?
No one knew that his ultimate goal was far more than just making guns: he wanted to build a special operations force that would transcend the ages. When this strange force hiding behind enemy lines showed its fangs, the enemy's nightmare had just begun - and all this had just begun.