I Build Rune Cannons in the World of Immortality

Traveling to the world of immortality, Du Yi's family of three, who had no golden fingers and no system, thought they could live the rest of their lives in peace, but they were affected by the battle of the Jindan monks. The Jindan self-destructed and shook the earth, thousands of souls were spread out, no human beings and animals were alive, and the entire town was instantly reduced to nothing. Without the qualifications to become an immortal, he is just an ant who survived by chance. What revenge can he take? If you can't cultivate immortality, you need ant tactics, ants armed to the teeth. Although we cannot create the super-destructive weapons of later generations, basic explosives are still fine. First, combine the resources of this world to create weapons suitable for you, enhance your own value, gain support and resources from more people, and then create more lethal weapons. Only then can you stand in front of him and hit him with one strike. "You can't rush it. You need a complete plan."