I Kept My Head Down Until I Became a Wizard God and Came Out of Seclusion, and You Call This the Outcast’s World?

Li Yan transmigrated to another world, where the System warned him that it was extremely dangerous. There were sects here that could summon thunder with their bare hands. There were sects here that could send their souls out of their bodies and cultivate both life and spirit. There were sects here that could call upon gods for help. On top of that, there were countless invaders who roamed the land, bombing everything with guns and cannons. So Li Yan decided to lie low and grow stronger. He only came out of seclusion after reaching the Witch God Realm, where he could turn all things into Gu, command spirit ghosts, and summon gods. But when he emerged, he fell silent at the sight of all the high-rises. He had become a Witch God, and now the System was telling him that this dangerous world was The Outcast? The world where someone at the Golden Core stage could already walk all over everyone else? This... Did that mean he was invincible in this world? After all, the strongest person here, the Old Celestial Master, was only a mere Golden Core cultivator, while he had already become a god!