The entire structure of the areas he spotted by eyesight or using spirit sense appeared in his mind. He could now tell why there were lots of mountains here, why the dark masters remained seated on top of the peaks, and didn't risk leaving there.
This was all connected, and these dark masters weren't there to watch over the valleys or take care of the invading masters. They were here to do something else, donate their spirit power constantly to make this wall stand like a mountain.
They had no chance of taking it down if they tried to fight it directly head-on. No matter how, even if the entire army of masters gathered here, they'd end up failing to do a single harm to this wall.
And without bringing this wall down, they wouldn't be able to leave here. This wall was also a piece of good news, as it was considered the last line of defence, one that'd protect something precious behind.
