Wen Wen was quite certain that the nature of the Endless Stairs was that of a powerful containment item capable of perfectly constructing an Illusionary Realm, and it might also, to some extent, manipulate the space within the church.
The Illusionary Realm it constructed was so convincing that even Wen Wen took such a long time to see through it, which meant it had to be at least on the Upper Sequence Level.
If it had some other abilities, its rating might even rise to the True Sequence Level. Such a containment item's level of danger would far exceed that of the mere Endless Stairs.
If Wen Wen was not mistaken, at least one hundred meters of depth in these stairs was real, because after he delved two levels deeper, although the temperature was changing slowly, it fluctuated within that specific range.
It was the combination of reality and illusion that constructed such a powerful Illusionary Realm.
