Qin Chen used the Chaos Divine Ring to obliterate the Divine Illusionary Realm's expert's primordial spirit, only leaving behind the latter's memory fragments.
Then, he refined the memory fragments. With this, he would be able to find out what kind of region the Divine Illusionary Realm was.
Logically speaking, this place was similar to the nine Heavens and ten lands, so there should be many opportunities and treasures.
If he wanted to find those opportunities and treasures, it would definitely take a lot of effort. Therefore, Qin Chen decided to refine the memory fragments of this expert from the Divine Illusionary Realm directly.
If he did that, he wouldn't need to search the place to know where those things were now.
Soon, Qin Chen refined all the memory fragments of the expert and learned that there were countless regions of various sizes in the Divine Illusionary Realm.