Xu Lan opened his eyes. In front of him was Nanjing in 1937, and the cold light of the bayonet was already touching his chest.
The moment the Japanese encirclement tightened, what he took out was not a gun, but a blueprint for the construction of an arsenal. The next second, the entire underground of the occupied area began to roar, and hundreds of production lines came to life under the enemy's feet.
From the Sanba Gai to the Katyusha rocket launcher, from building an arsenal from scratch to crushing the German weapon masters, when millions of killers collided with this man's war machine, they would not understand until their death: What is a firepower gap that cannot be filled even with human lives.
