Gods and Demons Are Also Humans

The two divine tribulations disappeared in one go, and the Nine Nether Demonic Tombs were forever deep. Who forges the Hundred Thousand Swords of the Underworld to subdue the Tianmen for my Xuanxin... There are gods and demons in this world. Where there are immortals, there are demons. Where there is royal power and wealth, there is gold and iron. (Pure ancient fairy tale work, no system, no time travel, sufficient manuscripts, and stable updates)