"You two used to live in the Xincheng residential area. What a coincidence, Han Ming, didn't you live there too?"

Among Dr. Liu's bodyguards, a dark-skinned young man with big eyes looked up from his bowl of noodle soup and replied, "Yes, I used to rent a place there."

After Han Ming finished speaking, he continued to drink the noodle soup. The noodle soup was really delicious. It had been a long time since he had a proper hot meal.

Lin Xuan thought the young man looked familiar, but couldn't remember him after thinking for a while, so she continued watching her brother make pancakes for her.

From the moment Xia Feng got on the bus, he was dealing with Dr. Liu while simultaneously preparing special meals for Lin Xuan.

Dr. Liu glanced at the two of them, roughly understanding their relationship, and then continued to ask his questions.

"Does Han Ming live in Building 7? What building do you live in? You're not neighbors, are you?"

"Building 5." Xia Feng flipped the pancake neatly.

"Huh? That's not the building across from us. We really are neighbors! What a coincidence!" Han Ming took two more flatbreads and handed one to Dr. Liu.

"You're from City D, so how did you end up in City A? Were you already in City A before the apocalypse?"

Dr. Liu continued to ask questions.

“We went to City A after the apocalypse,” Xia Feng answered succinctly, then stuffed two slices of freshly roasted mutated pheasant meat into his pancake.

Lin Xuan took out some cucumbers and cilantro that she had grown along the way from her spatial storage and asked her brother to chop them up and sprinkle them into the pancakes.

"Oh? You two lived so close to Han Ming, didn't you run into him after the apocalypse? Han Ming was out collecting supplies every day back then. With your skills, you shouldn't have just stayed at home in the early days of the apocalypse."

Han Ming also stuffed some roasted meat into Dr. Liu's pancake. Dr. Liu took a bite, chewed, and continued chatting with Xia Feng.

"I usually go out at night," Lin Xuan replied, sticking her head out from under Xia Feng's big arm.

She was very curious about Dr. Liu, whom she had never heard of in her previous life, and had been secretly observing him for a long time.

"You went out by yourself? Wasn't Comrade Xia in D City at that time?"

Dr. Liu also craned his neck across Xia Feng's large frame to ask Lin Xuan a question. The little girl was wrapped in fur, with only her head sticking out, and looked like some kind of small animal.

“My brother was away on a business trip and won’t be home for more than ten days.”

Is Dr. Liu a native of City D?

Lin Xuan put her two hands on Xia Feng's arm and asked Dr. Liu.

"I'm from S province. I finally had a vacation and wanted to come to D city for a trip, but now that I'm here, I can't go back."

Dr. Liu also put his hand on Xia Feng's arm.

It turns out that Dr. Liu is a Ph.D. in Life Sciences from the University of S Province, and his research focuses on microbial and plant genetic engineering.

I came to D City for a vacation, but it just so happened that the apocalypse broke out.

Fortunately, he found refuge in a secluded convenience store, where he had food and drink and escaped the initial chaos.

Later, Han Ming, who was collecting supplies, found him and rescued him. The two heard a broadcast from a helicopter over D City and fled together to a nearby protection station for refuge.

Wei Jie highly values ​​talent. After learning about Dr. Liu's identity, he protected him and some other research talents, providing them with a convenient, safe, and comfortable environment to conduct their research.

"Dr. Liu, what does it feel like after awakening your brain domain ability?" Lin Xuan was really curious, and she moved her head closer and closer to Dr. Liu on the other side, across Xia Feng.

"It's amazing, like being reborn. I was hailed as a genius since I was a child, but I wasn't happy. I just lived to satisfy my parents' vanity. Since awakening my superpower, the world inside me has been opened up. I can feel everything..."

Dr. Liu grabbed Xia Feng's other arm and raised his other hand to cover his dazed eyes.

"The shackles binding me have been broken. The universe, the air, the vibration, humanity, gravity, the rotation of the earth, the most distant part of my brain's memory—I have a premonition that this world may have no secrets before me."

"Wow!" Lin Xuan nodded, taken aback.

"In my view, this apocalyptic disaster is a collective evolution of humanity and life on Earth, and we are about to enter a completely new era."

Dr. Liu made a gesture of waving his hand towards the sky.

Lin Xuan wasn't particularly concerned about the evolution of humans and other life forms on Earth. Instead, she asked Dr. Liu a question that was currently of utmost concern to her.

"Dr. Liu, I heard you're about to develop a zombie vaccine. If successful, will humans no longer turn into zombies?"

"Yes, if a zombie vaccine is successfully developed, humans will no longer be able to turn into zombies."

Dr. Liu answered.

"That's great! With that, the apocalypse will end, human society will be rebuilt, and we'll soon be back to our former civilized society."

Lin Xuan stared at Dr. Liu with shining eyes, only to see him give a mysterious smile.

"Unfortunately, the apocalypse won't end so easily, little Bao."

"Huh?" Lin Xuan tilted her head in confusion.

“Developing a zombie vaccine is not difficult for me now, but you should know that we are not simply facing the problem of humans turning into zombies.”

Dr. Liu continued, "Human zombification is just the prelude to this apocalypse. I'm sure you superhumans have already noticed that the zombies are evolving."

"The zombie that attacked the D City base this time was one that evolved from a low-level zombie. It can now lead zombies and mutated beasts of lower level than itself in battle. I call it a mid-level zombie."

"Since intermediate-level zombies have appeared, it proves that zombies have the conditions for evolution. In other words, it is possible that advanced-level zombies, or even more powerful special-level zombies, may evolve from intermediate-level zombies in the future. How to eliminate or prevent those zombies from evolving is the real problem we need to face."

Lin Xuan was a little shocked. The concept of classifying zombies into Mud-type, primary, intermediate, and advanced was only introduced two years after the apocalypse, after the first advanced zombie appeared.

I never expected that Dr. Liu would bring this up now.

Dr. Liu continued, "Besides zombies, there are also mutated plants and animals. Although they are not evolving as rapidly or obviously as zombies, they are also evolving."

"If we vaccinate zombies and mutated plants and animals, will it stop them from evolving?"

Lin Xuan asked.

"Unfortunately, the zombie vaccine can only prevent humans from being infected with the zombie virus; it has no effect on species that are already infected with the virus," Dr. Liu sighed.

"Can you develop a drug to stop zombies from evolving?" Lin Xuan asked expectantly.

"I already have a research direction in mind, so I'm not worried about the technical aspects; I just lack relevant materials," Dr. Liu replied.

"What kind of material?" Lin Xuan asked again.

"Did you know that if the sap of the arrow poison tree comes into contact with a person's wound, the person will die very quickly? But its antidote, redback grass, always grows around the arrow poison tree. Wherever poisonous snakes are found, there will always be an antidote within a hundred paces. This is the law of mutual generation and restraint in nature. The birth of the zombie species must also be due to the existence of something that can restrain it."

"Once we find this thing, we can make weapons to deal with them."

When Dr. Liu said those words, Lin Xuan seemed to remember something crucial.

She seemed to know something about the concepts of mutual generation and mutual restraint, but the thought flashed through her mind and she couldn't quite grasp the point.