Start an Alien Infrastructure from Fifty Kilograms of Scrap Copper and Iron

This is a different world full of magic and belief in gods. Traveling through time as a good-for-nothing young man who was deprived of his title and was about to be sent to the death ice field in the far north, Renn faced a desperate situation at the beginning. There is no magic talent that can destroy the world, and there is no clanking invincibility system. The only thing he relied on was a "50 kilogram gift package of earth materials" that smashed through the snow pit and fell from the sky. In the dead of winter, in front of the magnificent church. The serfs held the dying child with high fever and kowtowed in despair, just to pray for a simple healing magic. In the wind and snow, the exiled Ren stepped forward and said, "Don't beg, the people inside won't come out." He peeled off the strange tinfoil, took out an "Amoxicillin" capsule with no magic power, and stuffed it into the serf's frostbitten hands. "Take some snow water and feed it to him." The serf held the red and yellow thing in his hands and thought it was ridiculous. No magic waves, no herbal smell. In this alien world where the Vatican has a monopoly on life and death, this exiled young man who cannot save himself actually expects a "colored particle" made of strange material to cure a fatal high fever?