Unless he opened up the North Spring Realm to let the Ancient Realm's power invade, or... he could fathom the deeper mysteries within the mist beside the cliffs of North Spring Mountain.
In the Ancient Realm, apart from tangible vessels that could be refined with Void Stone and brought out, almost nothing else could be taken away.
Yet fishing from the West Cliff could draw out Dao Souls. That alone held a mystery.
Although Gu Yuanqing was the master of the North Spring Realm, this boundary domain still held many deeper secrets he could neither understand nor control.
The fishing platform on the western cliff, the mysteries of the Heaven and Earth Pool, the core that allowed North Spring Mountain to grow on its own—all remained shrouded in fog to him.
These were limitations of his cultivation, realm, knowledge, and many other aspects. Just as he could use the North Spring Realm's power to suppress the Great Demon in the Underground Cave, yet his own divine sense could not truly touch him.
Gu Yuanqing was reluctant to lower his defenses and let the Ancient Realm's power enter the North Spring Realm, since doing so might expose his secrets to the outside world.
Thus, he killed the Ancient Realm inhabitants beyond the North Spring Realm's borders, while the realm naturally devoured the surrounding power and converted it into its own.
Moreover, devouring this power seemed to benefit the North Spring Realm.
With the empowerment of Gu Yuanqing's unity of heaven and humanity and World Arrival, the North Spring Realm's phantom merged with the Qian Yuan Realm, filling the entire Qian Yuan Realm with its power.
Ultimately, however, this was only an extension of its power, not the North Spring Realm itself. Only a tiny portion of the slain ghostly souls was