"Eh... a special sealed space?"
Su Lun had been keeping an eye on that Heidman's movements and found it slightly odd to see her use necromancy to directly summon a sealed space.
Even now, as experienced as he was, he had never seen anyone use necromancy to directly summon a sealed space.
It was somewhat similar to his "Stanitz's Chessboard," which created a sub-space.
But the space before him was eerily vast.
In Su Lun's perception, this space seemed "endless"?
It momentarily made him think he had returned to a world like the Netherworld described in books.
But it was not that.
Very strange.
This woman had formed necromancy seals very quickly, unless Su Lun had decided to use a plain crystal to teleport away the moment he saw her, he would inevitably fall into her trap.
But he was determined to fight, naturally he wouldn't flee.
...
Su Lun glanced around at the environment with his peripheral vision.