The Heavenly King Yuan Shi had originally created a vast world capable of encompassing many smaller worlds and even an entire galaxy.
However, such a world was still far less significant compared to the Primordial Immortal Realm, inferior by more than tenfold.
With the power of Heavenly King Yuan Shi, he could have created an even larger world, but doing so would have rendered him incapable of reconstructing scenes akin to those during the Fated Calamity.
Replicating the scenes from the era of the Fated Calamity in this vast world proved even more challenging than creating the world itself.
Therefore, this time, Heavenly King Yuan Shi borrowed the power of Empress Nuwa's Map of Mountains and Rivers.
The Map of Mountains and Rivers, the foremost space-related artifact across All Heavens and Myriad Realms, was said to be capable of capturing even the Primordial Immortal Realm at its utmost limit.
Of course, that was merely a legend.
