In legends, the "Black Iron World" was said to be the body of Timis, who was considered the mother of all living beings in the "Black Iron World." However, even for Lei Leian and her companions, they always saw it as nothing more than a beautiful tale, and no one believed that Timis truly existed. After all, even a perfect heavenly spirit from the legends when fallen, its body would at most form a "Type-6 Space." Moreover, this "Type-6 Space" world was still dependent on the existence of a primary world like the "Black Iron World."
A real divine spirit only forms a Type-6 Space upon falling, so the formation of the Black Iron World clearly wasn't the result of a fallen divine spirit. Consequently, Lei Leian believed that this legend was not true. Because if the "Black Iron World" was indeed created from the body of Timis, there could only be one possibility.
Timis, as mentioned in the legend, must be an entity far surpassing the divine spirits.
