Indeed, after Yuan Zhou and Xia Ruize withdrew, the tearing and rejoining of space caused a tide of fortune. But once space finished mending, it should not have left behind such a massive breach that even the sea flowed backward into this place.
Therefore, reasoning backward from this matter, the conditions required to open such a breach were far from simple. It could be said that no ordinary immortal could coincidentally accomplish it in such a short time.
Take a breach the size of the Spirit Sea, for example. It had been built upon the foundation of the Spiritual Energy Great Wall.
That required a long-term arrangement. At the time, Yuan Zhou and Xia Ruize could not possibly have imagined that one day they would be able to travel to the Void Domain and make preparations for it in advance, could they?
That made it possible to determine the focus of the investigation ahead.
The various spatial-isolation infrastructure projects established back then to resist demonic spirits or alien species—places like the Hanging Heavenly Sea and the Spiritual Energy Great Wall—had very likely been exploited by Yuan Zhou and Xia Ruize during the tide of fortune, allowing their tentacles to burrow deep within.
"Senior, did you think of something else?" Xue Xiao asked at once when she saw me sink into thought.
"Does the Origin Immortal Iron formation hub at the entrance to the Spirit Sea usually require immortals to be dispatched to maintain it?" I asked curiously.
Xue Xiao froze for a moment, then quickly said, "We've only just arrived, so we don't know very much either... But every so often, missions from beyond the domain seem to be issued. Most likely, they're for this sort of thing?"
After hearing that, Huang Zhen seemed to have thought of something as