C1006 Anger Control Valve

"Who is screaming?" Elena and the others were shocked by the wails and could not help but lean closer to Egerton.

"Mr. Elvin, we did not discover the existence of this sound." The guide's expression changed slightly as he explained to Egerton.

"Don't move." Egerton shouted to stop the guide who was about to investigate.

"Mr. Elvin, I..." The guide trembled and turned his head around