Zhou Jinchen nodded: "That sounds good, but brother, it's better for us to stay here. If the zombies outside leave, we can leave in time and run upstairs. It would be dangerous if there are zombies up there."

Fan Xin nodded: "Just call me by my name."

Zhou Jinchen said with a smile: "It's so strange to call you by your name. It's better to be intimate with your brother. Besides, your name is nice, but it sounds a bit annoying and a bit feminine."

Fan Xin stared at him with cold eyes.

Zhou Jinchen: “…”

Zhou Jinchen stopped laughing instantly. He raised his hands in compromise: "Okay, okay, I was wrong, Fan Xin, right? Don't look at me with those murderous eyes. I'm scared."

Zhou Jinchen's body shook, he pinched his eyebrows and rubbed his eyes.

"Why do I suddenly feel--so sleepy..." Before he could finish his words, he fell to the ground and passed out.

Fan Xin looked to the side and saw Zhong Yi also lying on the ground unconscious. Only Xu Yan was still standing there motionless.

Fan Xin closed his eyes and fell to the ground.

After a few minutes, Fan Xin heard a slight sound, followed by a series of footsteps, and soon, she was lifted up.

Fan Xin opened her eyes slightly and took a look. The floor in the middle of the mall opened to both sides, revealing stairs leading downwards. They were being carried downstairs.

“Zombies!”

"They even brought zombies with them!"

Fan Xin frowned and looked towards Xu Yan.

Without Fan Xin's order, Xu Yan stayed there obediently without moving. The group of people in white coats panicked for a while but then calmed down. Someone came up and tied Xu Yan's hands and feet and took her away as well.

Going down the stairs, about twenty meters underground, you will find a code door.

The man in the white coat entered the password, clicked open the door, and entered a white world.

White walls and ceiling, and a cool white cold light, with white flooring on the ground.

After passing through a long corridor, Fan Xin, Zhou Jinchen and Zhong Yi were sent into a laboratory and tied to a laboratory bed.

But Xu Yan was sent to another laboratory.

Not long after, the laboratory door opened with a click.

The sound of two people's footsteps in unison was heard.

"Doctor, there is a child among the experimental subjects this time. We will definitely succeed." An excited voice could hardly hide its excitement.

Fan Xin lay straight on the experimental bed, eyes closed, motionless.

The middle-aged man, about forty or fifty years old, nodded slightly. "Well, not bad. The chip is almost complete. I will personally operate on these experimental subjects."

"Yes, Doctor, I'll get ready right away."

Zhang Yan waved his hand and asked his assistant to prepare. He put on a pair of gloves and began to check the condition of the experimental subject.

He first checked Zhong Yi's condition. The child was obviously doing well, with good physical fitness and normal development. Zhang Yan was very satisfied.

Then he looked at Zhou Jinchen's condition, which was above average.

Finally, Zhang Yan stood in front of Fan Xin. He stretched out his hand, and just as he touched Fan Xin's hand, he was stunned.

Why is it so cold?

Zhang Yan frowned and reached out to feel Fan Xin's breath. When he bent down, he met a pair of black pupils as black as ink. Beneath the pupils, a faint blood-like color flowed.

Snap——

The iron rings that locked Fan Xin's hands and feet broke with a sound.

The cold hand, like an eagle's claw, quickly grabbed Zhang Yan's throat.

"You..." Zhang Yan's throat was tightly gripped. His eyes widened, his face flushed purple, and he used both hands to pry Fan Xin's hands apart.

Fan Xin looked at Zhang Yan and asked calmly, "Are you Zhang Yan?"

Zhang Yan felt dizzy and had tinnitus due to lack of oxygen, so he couldn't hear what Fan Xin was saying at all.

Seeing this, Fan Xin loosened his grip slightly.

Zhang Yan took the opportunity to shake off Fan Xin's hand, but he was unable to shake Fan Xin at all. He coughed violently and took big gulps of fresh air.

"Are you Zhang Yan?" Fan Xin asked again when he recovered.

Zhang Yan's eyes were a little bloodshot. He couldn't break free from Fan Xin's control, so he decided not to waste his energy.

"I, am. Who are you?"

Zhang Yan's throat was damaged, and it hurt every time he spoke a word.

Snap——

"ah--"

Zhang Yan rolled his eyes in pain and let out a shrill scream.

Fan Xin glanced at Zhang Yan's hand, the one whose wrist bones she had crushed, and took out a small remote control from his still trembling hand: "What is this?"

Zhang Yan was sweating profusely from the pain and said nothing.

Fan Xin smiled, threw Zhang Yan to the ground, and crushed the wrist bone of his other hand with her foot: "I'm sorry, I have a bad temper. Your little action made me unhappy."

There are no surveillance cameras in this laboratory, which was confirmed when Fan Xin was sent in.

From the sound of their footsteps closing the door and leaving, as well as the noises made by Zhang Yan and his assistant before they came in, she was very sure that the sound insulation in this laboratory was very strong.

She knew what Zhang Yan was going to do without him saying anything. This must be the remote control of the alarm.

"What do you want to do?" The wrist bones of both Zhang Yan's hands were crushed. He bit the tip of his tongue and tried hard to suppress the groan of pain. He looked at Fan Xin with resentment in his eyes.

Fan Xin curled the corners of his mouth: "Didn't you bring me in? I should be the one asking you this."

Zhang Yan took a breath and said calmly, "If you want to leave here, I can have someone take you out."

Fan Xin looked at Zhang Yan quietly through her black contact lenses without saying a word.

When Fan Xin saw the group of abnormal zombies outside before, he had some guesses, and now it has been confirmed that the abnormality of those zombies is indeed due to him - Mad Doctor, Zhang Yan.

She had only heard of Zhang Yan's name several years after the end of her previous life.

It is said that before the end of the world, Zhang Yan was researching a chip that could be implanted into the human brain to control human thoughts and actions.

This anti-human research project was of course not approved and was expressly prohibited by the higher authorities.

But Zhang Yan was unwilling to give up. He continued his research in private and achieved some results. When the country found out, they sent people to arrest him.

Zhang Yan was very cunning. Before the country's pursuit began, he ran away with his achievements. Not long after, the end of the world came and the country had no time to catch him.

After the doomsday came, Zhang Yan set his sights on zombies.

The unfinished chip worked well on the zombies, and he quickly controlled their movements. As for their thoughts? Zombies didn't have them, so it wasn't a problem at all.

However, if zombies do not have human blood for a long time, they will become exhausted, weaker and weaker, and their movements will become slower and slower.

Therefore, for the sake of his own group of zombies, Zhang Yan began to hunt humans and extract their blood to feed the zombies.

However, Zhang Yan failed later. After the zombies under his control advanced, the chips in their brains were corroded by the crystal cores and became useless.

After this matter was exposed, it spread very slowly because all means of communication were unusable after the apocalypse, and the only way to spread it was by word of mouth.

So Fan Xin and the others didn't know about the crazy doctor Zhang Yan until several years later.

But it seems that in addition to controlling zombies, Zhang Yan has not given up on using chips to control human behavior and thoughts.

Seeing that Fan Xin didn't say anything, Zhang Yan sat up with his elbows. His hands were in great pain, but he still tried to negotiate calmly with Fan Xin: "Let's make a deal. If you let me go, I'll give you something. How about that?"

Fan Xin looked at him with a half-smile.

She moved her ears, walked past Zhang Yan and went to the door of the laboratory.

Zhang Yan's face changed, and before he could open his mouth, the laboratory door was pushed open.

"Doctor, everything is ready..." The assistant just walked in pushing a cart and his voice stopped abruptly.

Fan Xin knocked his assistant unconscious with a single blow and closed the laboratory door.

She looked at the strange things on the cart, waved her hand, and the cart disappeared instantly, leaving only a small chip in Fan Xin's palm.

"Is this what you want to use to negotiate with me? Are all those zombies outside under your control?"

Zhang Yan's pupils trembled, and his gaze towards Fan Xin became increasingly scorching.

"How did you do it? Is it a superpower? It's a superpower, right?" He was shaking with excitement, and his eyes became increasingly obsessed.

Fan Xin played with the chip in his hand, his eyes cold and full of disgust towards Zhang Yan.

"If you look at me like that again, watch out for your eyes."

Zhang Yan shuddered, instantly feeling the pain in his wrist. He didn't dare look at Fan Xin again: "How did you gain superpowers? Is it because of the apocalypse?"

Fan Xin exerted force with her hands, and the chip turned into powder under gravity. She lifted it lightly and it dissipated into the air.

Zhang Yan's pupils shrank and his heart began to beat wildly.

"I really like your talent." Fan Xin walked towards Zhang Yan step by step, her eyes narrowed slightly: "But I'm sorry, I don't like you very much."

Zhang Yan sensed something was wrong and his expression changed slightly, then Fan Xin's foot landed on his ankle.

"ah--"

Along with the sound of bones being crushed, Zhang Yan's two feet were also crippled by Fan Xin.

Fan Xin took out a blood collection needle from the space and inserted it into Zhang Yan's vein: "It's better not to waste the blood."

"You..." Zhang Yan stared at Fan Xin fiercely with his pupils wide open, the malice in his eyes almost overflowing from them.

A ball of paper appeared in Fan Xin's hand, and he stuffed it into Zhang Yan's mouth without hesitation.

"Forget it. I don't want to hear your voice."

Fan Xin walked to the assistant, dragged him over, inserted the blood collection needle and started drawing blood.

Before long, the bodies of the two people gradually became cold.

When blood could not be drawn, Fan Xin pulled out the needle, went over and pried open the iron rings that locked Zhong Yi and Zhou Jinchen, put them on the ground, and then put all the equipment in the laboratory into the space.

Suddenly, Fan Xin felt a strong sense of pain, despair, and resentment.

The feeling of wanting to destroy the world had a great impact on Fan Xin. She frowned and tried hard to suppress the violent emotions in her heart.

"Roar--" From a distance, Fan Xin heard a zombie's roar. The sound was very far away and was very weak when it reached Fan Xin's ears.