[In the six hundred and fortieth year, you became a middle force in the Heavenly Demon Prison, with privilege level at Sky Thirty-Nine.]
[In the same year, due to your excellent performance on the battlefield, you were transferred to a more core area of the Heavenly Demon Territory.]
[You arrived at a place called the Great Iron World, a Middle Thousand World, which is very peculiar, as if a giant sword has split the entire world into two halves from north to south.]
[An endless abyss separates the north and south cultivators of the Great Iron World, only immortals and above can pass freely.]
[It is precisely because of the wondrous terrain of the Great Iron World that it has become the core of the region's resistance against the alien races!]
[Many scattered alien races or their armies operate within hundreds of worlds nearby.]
[Meanwhile, the department of Heavenly Demon Prison dedicated to hunting alien races is based on the Great Iron World to hunt nearby alien races.]
