Long before True Knowledge Immortal Emperor's true body departed, he had left behind a treasure and a wisp of lingering obsession. The treasure had become entangled with the Earth Crystal, using the Earth Crystal's rule-based power to establish a hidden space known as the "Little Mountain Sea." By exploiting the Earth Crystal's peculiar nature, True Knowledge Immortal Emperor had seized nearly one-tenth of the Fortune of the entire Mountain Sea Illusion Realm for this space.
One-tenth was neither particularly much nor particularly little. The Ancient Treasure Lands covered vast ranges, so no one had ever noticed this issue. After all, there had always been fluctuations in the thresholds between Ancient Treasure Lands.
By the time someone truly managed to break the illusion realm, several generations—or even several eras—would surely have passed. By then, the Little Mountain Sea space created by True Knowledge Immortal Emperor would inevitably have used the Earth Crystal's Fortune to give birth to all manner of treasures. Those treasures were what True Knowledge Immortal Emperor had intended to use as rewards for others.
As for the lingering obsession True Knowledge Immortal Emperor had left behind, it served as a form of surveillance. If the one who broke the illusion realm knew what was good for them, the lingering obsession would carry out True Knowledge Immortal Emperor's duty in his stead, using the treasures within the Little Mountain Sea to thank the visitor.
But if the person who broke the illusion realm failed to appreciate kindness and, after seeing the words on the wall, still wished to touch the Earth Crystal, then in True Knowledge Immortal Emperor's eyes, such a person who refused to heed warnings was either a fiend or someone with Wicked Intent. At that point, the lingering obsession would become the second trial preventing others