Sneaky

"Of course you can, sir," said the security guard.

"All right. I'll be here to see the situation first," Rainer said calmly.

Eryk nodded, then went inside, which after a few seconds of entering the door was closed making the light outside blocked until the room grew darker. He sat in the chair that had been provided and realized that if there was glass in front of him, he touched it to make sure, "Thick, strong barrier so that the light from outside doesn't get in here."

Eryk thinks this is well prepared, this organizer must have rented this before or he has been preparing for a long time. The light on the outside of the glass flashed, exposing a small room there, and he realized there was another glass room there surrounding the small room, it must be the place of the other bidders.