Only One Possibility

He knew that Noscent, as well as every major plane, would have some places with higher mana density, suitable for mages' meditation. At the peak of the Magic Era, those kinds of places had been crazily unearthed by countless mages. He actually remembered that during that era, there were many more places in Noscent suitable for meditation that had yet to be excavated.

And Ghost Valley was most likely a similar place. Something must had pushed this place's mana density to increase over countless years.

But this was only Lin Yun's conjecture, he didn't know what exactly happened.

The three cousins and Xiuban quickly recovered and calmly followed behind Lin Yun. After all, they had seen his Demiplane already.

After entering the valley, Lin Yun was a lot more vigilant. He urged his Magic Array to inspect everything within a kilometer. They then followed a simple path and slowly trod deeper into the valley.