Anti-Japanese War: Rubbing the Rifling by Hand at the Beginning, Shocking the Regiment Leader

Extremely passionate and decisive industrial domination of a great power. "Don't rush! That's a trick of the devil——" Chen Hai's eyes were red as he watched his comrades being killed by inferior weapons. To travel through the war of resistance, you not only need souls, but also steel! Faced with the political commissar's military order to "repair the broken guns in one month," Chen Hai used coke to draw a blueprint for firearms that transcended the times on a wall covered with soot. The old craftsman questioned? A section of rail steel was turned into a precision gun bolt, making everyone kneel down and worship! Lack of resources? The remains of the Japanese tanks are the steel for our cannons! From the first magic modified rifle, to the first mortar, to the first heavy tank. The system doesn't give rewards for killing enemies? It doesn't matter! Every gun delivered brings me one step closer to industrial dominance! Chen Hai: "I want the warriors on this land to never die because their weapons are inferior to others!" In this life, I will use the torrent of steel to crush the backbone of the invaders! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.