If viewed from the outside, the Divine Realm resembled a multi-layered cake structure, complete with its own ecosystem.
In the Myriad Realms, worlds with such complex and vast structures are also known as "great worlds."
Previously, the Cursed City was located on the lowest abandoned layer of the Divine Realm, so high-grade Divine Spirits like the Ziwei Divine Child had to descend in their physical form to reach it.
The Tian Zhao Realm was three ranks higher than the Cursed City, meaning Xue An and Chu Xiaoyun had to traverse several vast voids to reach the Tian Zhao Realm.
Of course, traversing these voids was different from walking among The Multiverse.
Because they were traversing within the same world, the spatial barriers were much weaker and thus, Great Luo cultivation level was not required.
Nevertheless, the journey was extremely perilous.