In a frigid apocalypse, she fed her boyfriend until he became a zombie king.

After saying that, Wenren Lei tiptoed to pull the doorknob.

Wenren Yu had been watching him the whole time. He was such a small child, he could barely walk steadily. His series of pretentious words and actions just now were quite funny to others.

He closed the book, rested his chin on his hand, and asked, "Where are you going to play?"

Wenren Lei was too weak to pull the doorknob. He turned around coldly and put his hands back in his pockets: "Just browsing around."

Wenren Yu got up and walked over: "I'll stay with you, but you need to rinse your mouth first."

"Fine." Wenren Lei put her hands in her pockets, moved to the cabinet, and said matter-of-factly, gesturing with her small chin, "Pour me some water."

After they finished rinsing their mouths, the door clicked open, and the two brothers walked out hand in hand.

"Brother, where is Mom?"

Wenren Yu tightened his grip on his hand: "I haven't seen my mother since our family was kidnapped here."

"Kidnapping?" Wenren Lei pressed, "Who did it?"

Wenren Yu said seriously, "Idiot, I guessed it was the director, didn't I?"

Wenren Lei snorted coldly: "I'll bully you from now on."

Wenren Yu replied calmly, "That's amazing."

Wenren Lei suggested, "Then let's go look for Mom."

Wenren Yu said, "I've searched many times, but I haven't found any clues."

Wenren Lei fell silent. Looking at his father, he didn't think he'd been kidnapped. He'd initially thought his father had brought them both to the research institute.

After a while, Wenren Lei asked, "Brother, what was our life like before we were kidnapped?"

As Wenren Yu walked, she said, "I'm very happy, but I only lived with my parents for a year."

Wenren Lei was taken aback: "Huh? Where were you before?"

"In Weicheng, I lived with my grandfather." Wenren Yu's tone was still calm. "My parents came back a year ago, holding you, who was just born. I thought that our family reunion could last forever."

Wenren Lei watched his retreating figure, his heart filled with mixed emotions. He never imagined that his brother was a left-behind child.

He ran up to Wenren Yu and hugged him with his short arms: "Brother, I will never make you angry again."

Wenren Yu was somewhat taken aback. His mischievous younger brother had suddenly become well-behaved. He raised his hand and patted his round head: "Okay."

Wenren Lei raised her head and said, "Brother, I want to go and see that nursery."

The two walked to the entrance of the nursery. Wenren Lei carefully pressed his ear to the door to listen for any sounds inside. He frowned, thinking of ways to sneak in.

"What are you doing, sneaking around like that?" Wenren Yu pushed the door open directly.

The nanny by the door saw the two of them and immediately greeted them gently, "Oh, it's you two. Come in and play."

Wenren Lei raised an eyebrow and added, "Haha, let me hear what material the door panel is made of."

Wenren Yu looked at him suspiciously, then led Wenren Lei inside.

The nursery is as large as two classrooms, and is divided into various activity areas.

More than thirty children were scattered around, building blocks, drawing, and looking at picture books. The scene looked no different from that of an ordinary kindergarten.

In a place away from the activity area, there are rows of children's beds and tall cribs.

The nanny moved between the cribs, taking care of the babies inside.

In the corner of the nursery is a transparent glass room filled with a wide variety of baby meals, snacks and formula.

Many children lined up quietly, waiting to receive the food they wanted.

What made Wenren Lei uncomfortable was that the children here were too quiet, which was definitely not normal, even though it was past nine o'clock at night.

In places where young children gather, even putting them to sleep becomes a disaster.

Especially here, the children range in age from infants to six or seven years old, so they should be noisier, but they are all well-behaved, which is completely contrary to common sense.

Wenren Yu took his hand and led him to the picture book reading area.

Wenren Lei grabbed a book, opened it, and used it to cover her face: "Brother, why are they so quiet?"

Wenren Yu glanced quickly at the nanny not far away and said in a low voice, "There is a trace of sedative in the air. We can't stay long. We have to leave after a short while."

Wenren Lei's heart skipped a beat: "If they're this ruthless, won't they turn into idiots if they stay here for a long time?"

Wenren Yu's head was starting to feel heavy. He said, "Yes, that's why Dad prepared a separate room for us."

Wenren Lei looked through the group of children one by one, but still couldn't find that familiar figure. He nudged Wenren Yu's arm: "Where's Qingqing?"

Upon hearing this name, Wenren Yu's expression revealed a hint of disgust. He said, "Qin Qingqing? She's the director's granddaughter, of course she's not here."

Wenren Lei was astonished; Qin Qingqing later became a zombie king. Had the director gone mad, turning his own granddaughter into a zombie for fun?

"Did Qin Qingqing volunteer for the experiment?"

Wenren Yu nodded gently: "She is eager to successfully improve her genes."

"Gene modification..." Wenren Lei leaned her round head closer, almost touching Wenren Yu's cheek, "How do you modify genes?"

Wenren Yu said in an almost breathy voice, "Inject the zero-dose serum." He glanced around the room. "Besides the two of us, all the children here have been injected."

"Huh?" Wenren Lei looked at the somewhat dazed children. "They don't seem to have changed much."

Wenren Yu's youthful face was filled with solemnity: "The fact that they survived is a change in itself."

"What do you mean?" Wenren asked tearfully.

Wenren Yu said, "There were originally more than a hundred children here. After being injected with that medicine, they had to pass two life-or-death tests. The first test was to survive, and the second test was to avoid being infected with the virus and mutating into a monster."

Wenren Lei's heart tightened; this monster must refer to a zombie.

Does that mean that this research institute is already hiding quite a few zombies?

Wenren Yu continued, "After passing the two tests, we also need to test the body's tolerance. Only when the medicine is successfully absorbed can the improvement be considered successful."

Some people's bodies cannot tolerate it and require repeated injections. Qin Qingqing is one such person; she has already had seven injections, and her body still cannot tolerate it.

"That's terrible." Wenren Lei suddenly felt a little schadenfreude, but he knew in his heart that Qin Qingqing had gone through the two major hurdles that Wenren Yu had mentioned seven times during her seven injections.

She will be infected with the virus and turn into a zombie during a future injection; otherwise, Qin Qingqing will not be able to evolve into the Zombie King.

However, this Zero Research Institute is quite calm. The director's granddaughter was killed by Brother Yan so long ago, but they did not send out all their forces to take revenge.

What are the benefits of a successful improvement?

Wenren Yu replied, "I don't know much. It's probably that my physical condition will improve, and after a long period of dormancy, I might even awaken superpowers."

Wenren Lei suddenly realized that he would become a superhuman in the future.

But after the apocalypse, quite a few people awakened superpowers. Could it be that all of them were injected with Agent Zero by the research institute?

No matter how I think about it, it seems unlikely.