Lin Fan pounded on the thick glass with his hand, but it was no use. This was tempered glass—impervious even to bullets, let alone fists.

Wang Yuanchao smiled at Lin Fan, extending his right hand to make an "OK" gesture. He then activated the disinfection process in the first room, quickly donning a surgical gown that left only his eyes visible.

Using the brightness of the lights, Lin Fan sniffed intently, trying to identify the source of a strange smell. Just then, the earlier "thud" echoed again, seemingly right behind him. Startled, Lin Fan looked up to find that the sound was coming from the pinhole camera.

This was not just a regular camera; it seemed to have a speaker as well, transmitting sound from somewhere in another room.

Turning back, Lin Fan saw that Wang Yuan was fully equipped and had opened the door, stepping into the second room next door.

Inside the second room, there was an iron bed in the center, covered by a white cloth. Lin Fan's pupils dilated—his instincts as a doctor told him that beneath that cloth lay a cold, lifeless body.

He recalled Wang Yuan's words before leaving: he had mentioned there were other things inside. Could it be a corpse? And what did he mean by wanting humanity to never forget the Zhao family? What was he researching?

Wang Yuan didn't linger in the second room; he crossed through it and walked toward the third room. As he opened the door, a bloody head suddenly leaped out from the ground. Lin Fan's eyes widened in shock—it was the head of a wolf dog, but it was far from normal. There was not a single hair on its head, just two blood-red eyes that moved wildly, desperately trying to jump up, but it failed again and again.

In front of the wolf dog, Wang Yuan picked up a small microphone from the table and clipped it to the collar of his white coat. He then blew into it a couple of times, and immediately, the sound of his breath echoed from the camera positioned behind Lin Fan.

“Lin Fan, can you hear me? If so, nod your head.”

Lin Fan faced Wang Yuan and quickly nodded twice.

“I didn’t tell you these things when I came in because I didn’t want you to see me as a criminal. Now that you understand my situation, I can fully explain my research to you.”

“In front of me is a wolf dog that I secretly brought over from the veterinary lab. Of course, by the time I got it, it was already a dead dog.”

Hearing this, Lin Fan’s eyes widened in disbelief. A dead dog? But what he saw was a lively, wriggling creature. Despite its bloody appearance, it was clearly moving, desperately trying to break free of its restraints. It was obviously alive—could he be mistaken?

“You don’t need to be shocked. I used a special drug to revive this dog. It has once again regained a semblance of life. However, it can only move and has completely lost its reason; its brainwaves show no response. But I know this is just the first step of the experiment, and it’s still a long way from my initial vision.”

“I mentioned earlier that the room below is my reagent lab. Indeed, this is where I am researching a drug I’ve named ‘Corpse Exterminator.’ It’s a virus optimized and purified from the bodies of the deceased. There’s too much information to cover right now, and you might find it hard to accept all of this at once. Therefore, I’ve included detailed extraction and purification methods in the materials I left for you.”

This novel is published on a different platform. Support the original author by finding the official source.

“Ahem, this virus is extremely dangerous. It’s crucial to warn you: whether or not you choose to continue this research, you must exercise extreme caution. This virus is not an ordinary one; it does not spread through air or saliva. There’s only one mode of transmission—through blood. Once it enters your bloodstream, it will seep into your marrow and spread throughout your body, and it propagates at an astonishing speed.”

Wang Yuan suddenly exposed a part of his neck, turning around to show Lin Fan. Through the glass, Lin Fan noticed a vivid, fresh blood mark on the back of Wang Yuan's neck.

Wang Yuan straightened his attire and turned to face Lin Fan, his tone a bit somber. “I was injured yesterday in the lab while preparing the Corpse Exterminator. I accidentally got scratched by something hard above me. At the time, I didn’t think much of it, but after finishing the experiment, I started to feel unwell. During my break today, I distinctly noticed something was off with my body. I secretly checked my blood in the medical room and was horrified to discover that my blood test results were completely abnormal, matching exactly the blood samples I extracted from the wolf dog.”

The entire room fell silent for a moment. Wang Yuan took a deep breath before looking up at Lin Fan, his expression deeply troubled. “I know—I’ve been infected with the virus.”

Lin Fan shook his head in disbelief. The sudden revelation was hard for him to accept, but what could he do? He could only sit quietly and listen to Professor Wang.

“The blood indicators suggest I have only a few hours left. I’m running out of time, so I thought of you. I’m placing my hopes in you.”

“From the day you entered the hospital, I felt fortunate to be your mentor. I’ve looked into your background, Lin Fan. You were born in '87, lost your mother at three, and at fourteen, you entered university to study clinical microbiology. Four years later, you completed your studies with the highest honors, earning your medical degree. You could have pursued further studies, but that year, your father passed away from lung cancer, leaving you without financial support. You couldn’t continue your education, so you chose to stay at the school and quietly focus on your microbiology research. At twenty-one, you met your senior, Cai Tingting, and experienced your first love, which remains your only love to this day.”

Hearing this, Lin Fan's breathing became rapid, his facial features distorted, and he struggled in pain. He shook his head, signaling Professor Wang to stop talking.

However, inside the room, Professor Wang didn't stop narrating at all.

"Unfortunately, when you were 24 years old, just when your love was about to bear fruit and you were on the eve of entering the marriage hall, your lover, Cai Tingting, fell ill with a strange disease. Half a year later, she passed away too. After she left you, to conceal the sadness in your heart, you chose to pursue postgraduate studies. You're highly intelligent and very smart. What others needed four years to complete in their studies, you finished in just two years. Last year, you were arranged to do an internship in our hospital and became my last disciple."

"Lin Fan, answer me. When you saw your father and your girlfriend leaving you, didn't you feel so useless and helpless? How much you wished they could come back to you again? If so, nod your head for me."

The whole room was filled with Professor Wang's thunderous voice. In Lin Fan's eyes, big teardrops, like broken strings of pearls, fell down in torrents. Nevertheless, he still obediently nodded his head.

"Very good. The research I'm conducting is to unlock the essence of human life. I believe you will continue my research. Lin Fan, will you blame me for doing this?"

"No," Lin Fan answered. Only then did he realize that Professor Wang inside the glass room couldn't hear his reply at all. So he shook his head.

"Lin Fan, look carefully. This is the result of my research, a drug that I've named 'Zombie-Killer'." Wang Yuan picked up a glass bottle from the table. It wasn't much different from the powder injections seen in the hospital.

"It's in powder form. I'll dilute it with sterilized water for injection and then inject it into the corpse. You should watch my next experiment carefully." This time, Wang Yuan went back to the second room.