"No... no." The secretary spoke somewhat evasively. "Without Dr. Song's instructions, I am not allowed to enter his office except for his patients." After saying this, a noticeable sense of desolation appeared in the secretary's eyes.

"Huh? His introverted personality hasn't changed at all?" Wang Shen continued, following his secretary's words, and even chuckled twice, trying his best to show his familiarity with Song Mu.

"That's not it either," the secretary said softly, lowering her head slightly.

“I’ve already told him, he’ll be in the office soon.” Wang Shen took out his phone, pretending to send a message to Song Mu. “I’ll wait for him in his office.” After saying that, Wang Shen prepared to walk towards Song Mu’s office.

"Wait, that won't do. Dr. Song doesn't allow anyone into his office." The secretary took two steps back, blocking Wang Shen's way.

Wang Shen smiled at his secretary and shook his phone. "It's alright, I've already spoken to him."

The secretary sighed, finally stepped aside, and returned to her desk.

Wang Shen finally breathed a sigh of relief. Luckily, the secretary wasn't very alert; if she had asked to see Song Mu's reply, Wang Shen would have been truly embarrassed. Wang Shen glanced back at the secretary, who picked up an elegant water glass and took a couple of sips. Wang Shen met the secretary's gaze again, smiled, and then pushed open the door to Song Mu's office and went inside.

Song Mu's office also served as a psychological counseling room, its layout both simple and sophisticated. Suddenly, the secretary knocked on the door and called out, "Would you like me to get you a glass of water?"

"No need, he'll be back in his office soon," Wang Shen declined his secretary's offer. However, judging from her behavior, she truly wouldn't step into this office without Song Mu's permission. Wang Shen glanced around the office, listened to the sounds outside the door, and after confirming everything was safe, he walked to Song Mu's desk.

Wang Shen remained extremely careful, even his footsteps were kept exceptionally quiet. He gently moved Song Mu's office chair a few centimeters away, then quietly opened the drawer. Wang Shen considered himself a neat and tidy man, but seeing Song Mu's drawer still impressed him. Inside lay files of various sizes, all neatly categorized and arranged according to size, shape, and thickness. Not only that, but every corner of the files was perfectly aligned. Based on this, Wang Shen concluded that Song Mu either had obsessive-compulsive disorder or was a germaphobe.

Wang Shen pulled all the files out of the drawer. The left drawer was empty except for the file folders. A little disappointed, Wang Shen put the file folders back in their place, gently pushed the drawer back up, and then pulled out the right drawer. The file folders were neatly arranged again. Wang Shen was about to push the drawer back up, but halfway through, he decided to check it. He took the file folders out of the drawer again. His gaze instantly fell on the flashlight deep inside. Wang Shen took a pair of rubber gloves from his pocket, put them on, and then took the flashlight out of the drawer.

The flashlight was protected by a cover. Wang Shen took it out and carefully checked the model number and specifications marked on it. He immediately took out his phone and searched for the flashlight's functions online. The result was exactly as Wang Shen had thought. It was a high-powered flashlight. A figure moved slightly outside the door; it was probably his secretary. Wang Shen subtly stopped what he was doing and waited until the figure gradually disappeared into the distance before straightening up.

Wang Shen put the file folder back in its place, closed the drawer, and glanced at the window of the counseling room. Holding a powerful flashlight, he slowly walked to the window. He examined the window's structure, loosened it slightly, and gently pushed it open. Sure enough, across the street, directly in front of the window was the convex wide-view mirror. Wang Shen checked the traffic and pedestrian flow below, and when the traffic thinned, he immediately turned on the flashlight, adjusting the beam and focus to their highest levels. A beam of light shone directly onto the mirror, but strangely, Wang Shen didn't see any dazzling glare reflected from it.

Wang Shen stood by the window, staring at the wide-view mirror in deep thought. With his engineering background, Wang Shen understood the reason. He slightly shifted his position, observed the road conditions, and then shone a bright beam of light again. After several attempts, Wang Shen finally managed to receive the dazzling glare at a specific angle. To ensure that drivers around corners were not distracted by the glare, the angle had to be precisely controlled. Wang Shen glanced at the desk, as if he could see Song Mu carefully making countless attempts.

Wang Shen took a plastic bag out of his pocket, and just as he was about to put the flashlight in it, he hesitated. He gently closed the window, then quietly walked to his desk, took a picture with the flashlight, and put it back in its original place. He gently closed the drawer again, and just then, he noticed a pair of slippers under the desk. He straightened up and glanced at the desk. He took out a sheet of A4 paper, placed the slippers on it, and took out his pen to trace the outline of the slippers.

If the size of the slippers matches the size of the shoe print left on the banknote, Song Mu becomes even more suspicious. Wang Shen has always felt that the two most recent cases are related to Han Mo's case. What exactly is the relationship between Song Mu and Han Mo? This is the question Wang Shen most wants to figure out right now. Wang Shen tidied up his desk, making it look as if no one had disturbed it.

My dear reader, there's more to this chapter! Please click the next page to continue reading—even more exciting content awaits!