Xu Yinyin

Two hours later, when Yun Zishan returned to the interrogation room, a female disciple half a head shorter than her followed behind.

It was Xu Yinyin, Yun Zishan's only personal disciple. As she pushed open the iron door, the sight before them made both women pause.

All the renovations in the interrogation room were complete, the interior completely transformed.

The walls were covered in light gray acoustic foam, the floor laid with dark anti-slip mats, and even the ceiling had been remodeled, embedded with several battery-powered light panels emitting a soft white glow. A faint scent of air freshener lingered in the air, thoroughly masking the previous smell of blood.

Yun Zishan stepped into the room, Xu Yinyin close behind. Her eyes sparkled with lively curiosity as she examined this unusual space.

Xu Yinyin was Yun Zishan's only direct disciple, a unique status within the Law Enforcement Hall. In contrast, Qiao Bin and the others, though they had joined earlier, were merely nominal disciples of the hall, addressing Yun Zishan as "Hall Master" in daily interactions rather than "Master."

"Greetings, Senior Disciple Qiao!" Xu Yinyin spotted Qiao Bin and immediately gave a proper bow. "I heard you found a way to make that undercover agent talk, so I specially asked Master to bring me along to see it."

Qiao Bin quickly stepped forward and made a gesture of supporting her, a warm smile on his face. "Junior Sister is too polite. I've said before, there's no need for such formality between us. You're always welcome here."

Xu Yinyin bared her little tiger fangs and gave a playful wink. "Propriety can't be abandoned! Master always says rules must be followed at all times."

As she spoke, her gaze was already drawn to the various novel objects in the room. Her lively eyes darted around curiously, finally landing on a black square object on the interrogation table.

"Senior Brother, I've been to Zhaoyu Tower several times, but why has it changed so much today?" She pointed at the black square. "What's that? I've never seen it before."

Qiao Bin, having failed to answer Yun Zishan at dusk because he hadn't memorized these things clearly, had spent over an hour that night drilling all the equipment names and uses Yang Ning had introduced into his memory. Now he replied calmly, "This is called a 'microphone.' Through it, we can speak with people in the opposite room across this wall."

Xu Yinyin took a step forward, eager to examine it closely, when Yun Zishan's cool voice rang out at the right moment. "Yinyin."

The maiden's raised foot hung in midair before she reluctantly withdrew it, pouting as she murmured, "Yes, Master."

By now, Yun Zishan was standing before the one-way glass. Through that transparent barrier, she could clearly see the scene on the other side: the undercover agent, cuffed to a specially designed chair, still unconscious, while Yang Ning stood nearby, focused on fiddling with a flat, glowing object.

Yang Ning swiped at the tablet computer in his hand, thinking to himself: These electronic products from the System Mall really are convenient, even able to connect to a dedicated Wi-Fi network. But the monthly fee of two spirit stones for internet access is a real pain—it eats up the profit from selling one incense stick. As he thought, he quickly checked the preset programs.

Once everything was adjusted, he took a fitness tracker from his pocket and carefully slipped it onto the undercover agent's wrist. Then, from a nearby box, he retrieved a pair of VR goggles and noise-canceling headphones, gently placing them on the still-unconscious agent's head.

This series of actions, to the eyes of the few watching from behind the one-way glass, were all unheard-of novelties.

Yun Zishan furrowed her delicate brows slightly, Qiao Bin's palms were sweating with tension, but Xu Yinyin's eyes sparkled with excitement, showing keen interest in everything before her.

"Hall Master, shall we begin?" Qiao Bin cupped his hands and asked Yun Zishan for instructions.

Seeing Yun Zishan give a slight nod, Qiao Bin recalled the training Yang Ning had just given him. He reached out and pressed a red button beside him, then patted the microphone.

"Testing—testing—(echo), can you hear me?"

In the renovated interrogation room, the inner chamber could hear the outer person's voice through the speakers, but due to the acoustic foam, the outer person couldn't hear the inner chamber.

Yang Ning walked up to the one-way glass and gave a thumbs-up through it.

And directly opposite Yang Ning, on the other side of the one-way glass, stood Yun Zishan!

Yun Zishan was tall, only slightly shorter than Yang Ning. As Yang Ning stared at the one-way glass, his eyes met Yun Zishan's.

In Xu Yinyin's view, the two figures overlapped through the glass. She had no idea this was one-way glass, and instantly gasped, covering her mouth, not daring to move.

Xu Yinyin's eyes went wide, darting back and forth between her master and the man behind the glass. Standing at a side angle, she couldn't see her master's expression, so she focused all her attention on the unfamiliar man beyond the glass.

She unconsciously started chewing on her lip: He's got a decent face, and his eyes have some indescribable roguish charm—kind of captivating. I wonder which sect's cultivator he is... His clothes don't look like a sect disciple's... But even if he's good-looking, he's still not worthy of my master...