Ji Yuan first released the [Celestial Craft Square] inside the already established stone chamber. As the structure appeared, the Inverted Dipper Array also emerged.
Although this array couldn't defend against a Nascent Soul Monster like the Bone Nightmare Old Demon, it wasn't easy for a Core Formation Cultivator to break through. However, what truly gave Ji Yuan a sense of security was the Mountain of Mind and Heart that he summoned after establishing his Cave Mansion.
The current Mountain of Mind and Heart could only be detected by a late-stage Nascent Soul Cultivator at the very least.
A mid-stage Nascent Soul might find it, but it would require quite an effort.
Thus, the array and the Cave Mansion outside were merely for disguise; Ji Yuan's real hiding place had to be this Lifebound Magical Treasure.
Upon returning to this long-missed place, Ji Yuan first appeared on the third level of the [Cave Mansion].
