Dim removed a piece of stone from the wall to reveal a lever.
He gestured towards Xia Zhou, drawing a path in the air with his fingers, and said,
"You pull this lever, then enter. Wait for the metal door opposite to open, then leave through that door."
Xia Zhou silently nodded, pulling the lever with his right hand covered in a leather glove.
The metal door retracted into the wall along a bottom track, revealing a narrow passage only wide enough for one person.
Xia Zhou calmly walked in, and the door closed behind him.
There were rows of small, pitch-black holes on both sides of the stone walls.
A white mist sprayed out from the holes on one side, filling the confined space.
This scene lasted about a minute until a suction force came from the holes on the other side, sucking away the white mist.
The metal door at the end of the passage slowly opened.
Xia Zhou stepped through the door, his eyes frozen.
