That legendary fourth-level fire mage had constructed a vast smelting furnace right here where there happened to exist suitable ley lines.
Then he built a private teleportation gate leading to the nearby major city, and many people moved over, with a lot of goods being transported as well.
This town was developing into a huge casting factory, and everyone in the town worked for the factory.
Zhang Dahai, as a warrior of expert level, had been a construction worker before, but here he was considered a talent, and some tasks in the forge were assigned to him.
Casting was conducted here with exceptional powers; the temperature in certain workshops was incredibly high, which ordinary people just couldn't endure.