The light shifted, but the room stayed eerily quiet.
And that's exactly what made it so dangerous.
Mu Chen sat perfectly still, eyes locked on Dr. Qiu, not bothering to look around or ask what was happening. His training kicked in: notice the changes. He had. Now, he just had to survive them.
The new light was warmer, softer. It should have felt more human, but instead, it felt completely fake. The sharp white walls now seemed to blur at the edges, as if the room itself was trying to soften its edges, to feel gentler.
Dr. Qiu, his voice still calm, said, "Relax, Lieutenant Mu. This part's easy."
Mu Chen replied quietly, "I am relaxed."
Dr. Qiu smiled. "Yes. That's the interesting part."
Then, a low hum started, barely audible, not quite music, just a soft tone underneath everything, almost too quiet to even register. Mu Chen kept his breathing slow and steady. He finally understood. This wasn't a physical challenge. Not at first. It was a test of pressure, a way to see how his mind would react when his surroundings changed.
Dr. Qiu tapped the table, and an image flickered to life between them: a child's dorm room. Small beds, thin blankets, a metal cabinet. Mu Chen's fingers tightened inside his gloves for a second before he consciously loosened them. Dr. Qiu watched him intently.
"Recognize it?" Dr. Qiu asked.
Mu Chen looked at the image and gave the safest answer. "It looks like a lot of places."
Dr. Qiu nodded. "But it reminds you of one."
Mu Chen didn't reply.
The image changed to a narrow hallway bathed in cheap yellow light. An orphanage hallway. Not his exactly, but close enough. The low hum in the room deepened, almost like a breath. Mu Chen felt memories start to press in: cold floors, crowded rooms, the smell of old soap, the faint sounds of boys trying not to cry at night. He kept his face completely blank.
Dr. Qiu leaned back slightly. "Your pulse is still stable."
Mu Chen met his gaze. "Is that disappointing?"
Dr. Qiu's smile was small. "No. It just tells me you learned early."
Mu Chen remained silent. Because yes, he had learned early. He'd learned to let pain pass without showing it, to empty his face, to survive adults who were always looking for a reaction.
The screen changed again, this time showing a mission snapshot: Ye Fan inside the gate, Mu Chen behind him, Ye Fan's mental pressure line dropping.
Dr. Qiu's voice remained mild. "You react more strongly to him than to your past."
Mu Chen's stomach clenched. He said nothing. Dr. Qiu watched him closely. "Interesting."
The room's low tone shifted, pressing gently against the edges of Mu Chen's mind, not forcing, just inviting. *Open a little. Let us in.* Mu Chen kept his thoughts small, not empty – empty looked fake. Small was safer. He focused on simple things: *The gloves are tight. The chair is cold. The light is warm. Don't move.* A clear mind wasn't a blank one; it was one with nothing useful near the surface.
Dr. Qiu studied him. "Do you know why some guides handle institutional control better than others?"
Mu Chen answered simply. "Because they don't trust kindness."
Dr. Qiu's eyebrows lifted slightly. That had hit home. Mu Chen held his gaze. Dr. Qiu smiled again, but this time it was thinner. "That's a sharp answer."
Mu Chen said nothing.
Dr. Qiu folded his hands. "Let me ask you directly. Have you ever guided more than one sentinel at a time?"
Mu Chen kept his face calm. "No."
"Have you ever stabilized an A-class sentinel without formal contact?"
"No."
"Have you ever hidden your real output in official testing?"
Mu Chen looked at him. "No."
Dr. Qiu tilted his head. "You lie very cleanly."
Mu Chen's voice stayed soft. "You ask very dirty questions."
For the first time, Dr. Qiu's smile faltered, just a little. But Mu Chen saw it. The room remained warm, the low tone continuing its subtle hum.
Dr. Qiu tapped the table. "You know what I think?"
Mu Chen didn't answer.
Dr. Qiu continued anyway. "I think you're scared enough to hide, but not scared enough to obey. That makes you a difficult subject."
Subject. Not soldier. Not guide. Not person.
Mu Chen looked at the dark screen and said quietly, "Then stop treating me like one."
Dr. Qiu's gaze sharpened. A long silence followed. Then Dr. Qiu stood up. Mu Chen's body remained still, but every muscle in him tensed. Dr. Qiu walked to the wall panel with the restraint chair and rested a hand on one of the straps. "Some guides need structure before they feel safe," he said.
Mu Chen's throat tightened, not from panic, but from memory. Hands on shoulders. A voice saying, *hold still*. The lie of safety. He forced himself to take one slow, even breath. He looked at Dr. Qiu and asked, in a quiet voice, "If I sit there, will you stop calling it care?"
Dr. Qiu turned back to him. For a moment, neither spoke. Then, the door opened. Lin Lan stepped in. Not rushing, not loud, but her arrival changed the atmosphere of the room.
"Time," Lin Lan said.
Dr. Qiu looked annoyed for the first time. "We are not finished."
Lin Lan held up her tablet. "Your approved slot is over."
Dr. Qiu smiled again, though it took more effort now. "Colonel Luo moves quickly."
Lin Lan didn't react. "Lieutenant Mu is returning with me."
Mu Chen stood up. His legs were steady. The black gloves still covered his hands, hiding how cold his fingers had become. Dr. Qiu looked at him one last time. "A clean mind is hard to crack," he said. "But not impossible."
Mu Chen met his eyes. His voice was calm. "Then you should stop trying."
Lin Lan turned and walked out. Mu Chen followed, and the door shut behind them. Only when they reached the hallway did Mu Chen feel the air shift back to normal: normal base lighting, normal cold, normal cameras.
Lin Lan didn't speak at first. Then, without looking at him, she asked, "Did the room change?"
Mu Chen answered softly. "Yes."
Lin Lan's mouth tightened. "I thought so."
Mu Chen looked straight ahead. "What was it?"
Lin Lan's voice stayed flat. "Behavior shaping. Stress mapping. Sometimes they try memory triggers. Sometimes sensory pressure. Sometimes they test obedience."
Mu Chen nodded once. He wasn't surprised. He was just tired. Lin Lan glanced at his hands. "Why are your fingers shaking?"
Mu Chen looked down. They were trembling very slightly, barely visible under the gloves. He curled his fingers once and stilled them. "They're cold," Mu Chen said.
Lin Lan didn't call him on the lie. She only said, "Let's get you back."
They walked toward the unit floor under the cold white lights. Mu Chen kept his face blank, but deep inside, something had shifted. Not fear, not yet. Something closer to anger. Clean. Quiet. Hard to crack.