The mining district of Celestial Wolf City was clearly where they mined this world's mineral resources. The ability to mine these resources implied that Celestial Wolf City could already utilize minerals, and the resulting industries were likely quite well-established.
Minerals had a wide range of applications, such as smelting armor and crafting weapons and equipment. Although the Demon Race generally didn't need to craft such things, it was possible they refined so-called Magical Treasures.
For example, when Jiang Qiu had pursued the Eight-direction Reversing Ship through the Primordial cluster of worlds, he had encountered countless worlds, large and small, and seen no shortage of Magical Treasures.
Many civilizations possessed extraordinary techniques for crafting Magical Treasures. It seemed that Celestial Wolf City, in this world, also had this capability.
