"Okay, we'll be starting now." Prof Shen's voice came from the speaker and temporarily shattered the silence inside the soundproof room. "Focus on the images, and try to suppress the feeling of the illusion."
Inside the small room, Gu Jun was placed in the chair in the middle. He stared at the screen on the wall, and the surroundings became silent. He couldn't hear anything; all the soundwaves had been intercepted by the thick fiberglass and soundproof sponge. He trained all his focus on the picture on the screen.
