The original name of the Kun Demon is [Thousand Mechanism], which was a blood and flesh puppetry created during the Dao Court Era by Immortal Gods to transform the world, a type of artificial Demon Spirit.
Its prototype is various unintelligent insects, and the final result is a kind of mechanical puppetry that can be as small or as large as one wishes, coordinating like ants, capable of constructing gigantic structures and maintaining small facilities.
They are ever-changing and can be freely modularly combined, making them the preferred tools of the Earth and Wood Immortals. Like the Ancient Immortal Ruins, such as the 'Beitian Void Shipyard Cave Heaven', those sky islands densely spread across the sky and the gigantic steel structures taller than mountains are essentially all autonomously built by the Thousand Mechanism according to design blueprints. The related Immortal Gods only need to check them regularly without needing to do it personally.