Gu Yuanqing might have been safe and sound here, but that was only because he had proceeded cautiously the entire way, keeping his aura contained and never disturbing the seal in the slightest.
The Rule Divine Artifacts and sealing Grand Formation here targeted not only the Demon Lord's techniques, but anyone who dared disturb the seal.
Otherwise, those True Demon Apostles would never have stood idly by while their master remained trapped here.
A lower Rule Divine Artifact needed a cultivator's power to unleash its might, but a Middle Rule Divine Artifact contained Heaven and Earth within itself and possessed boundless power of its own.
Without that, it would not have been enough to offer Divine Path cultivators a glimpse of the God King's path.
Combined with the Formation here, even a God King would have had to tread carefully.
Gu Yuanqing's cultivation had reached the middle stage of Celestial Immortal. Although only an avatar had come here, with World Arrival's empowerment taken into account, he might not have been any weaker than a God King. Still, he dared not be careless.
His gaze swept across his surroundings. Starlight flowed through his Void Piercing Heavenly Eye, and images of Yin-Yang and the Eight Trigrams appeared.
He deduced the mysteries of this sealing Formation and its Rule Divine Artifacts.
"Hm? There are so many runes of other Great Daos here, too!"
Gu Yuanqing looked up at the cavern ceiling. Besides the Dao Patterns of the Immeasurable Heavenly Secrets Diagram and the Great Change Array Diagram, numerous other Great Dao array patterns were interspersed among them.
Runes of the Town Abyss Underworld Edict, the Sky Monitoring Mirror, the Taiyin Dark Water Banner, and more could all be found among the array patterns.
These various powers were ingeniously combined into a sealing formation