"From what I see now, there are actually many side effects of hibernation..."

Tang Xin said with a smile:

"It's just that major research institutes around the world seem to have a consensus, out of respect for Professor Xu Yun and to avoid ordinary people misunderstanding Professor Xu Yun, so when it comes to side effects, they basically avoid the important ones and skim over them."

"Professor Xu Yun is the founder of a completely new field. It's perfectly normal for his inventions to have imperfections. Otherwise, what's the use of scientists like us? It's just that ordinary people find this principle difficult to understand... Everyone always likes to hear success stories and mythologize people like Professor Xu Yun."

"In general, the biggest side effect of hibernation is on the brain."

Tang Xin pointed to her head and continued:

"You should also know that prolonged hibernation, due to the lack of continuous stimulation of the cerebral cortex, nervous system, and nerve center, can lead to inactive brain signals, resulting in varying degrees of amnesia."

"But... in fact, this side effect is more serious, not just simple amnesia. Because hibernation is different from dreaming, it is an anti-natural behavior that forcibly reduces the efficiency of life. If the nervous system and brain structure are deprived of stimulation for a long time, they will experience irreversible degradation and atrophy."

"So... I won't explain it to you in such detail, Lin Xian. Let me just tell you the result. If a person hibernates for more than ten years, it's not just amnesia. He is very likely to become—"

"Mentally disabled."

Lin Xian opened his eyes wide:

"Mentally disabled?"

This was a result he had never considered.

Even Professor Xu Yun didn't consider this side effect. Perhaps it was because he passed away too early, and hadn't researched it in depth yet.

But he was right about one thing.

Prolonged hibernation, lacking electrical signal stimulation to the brain's nervous system, can cause some irreversible damage.

Muscles, if they atrophy, can be recovered through rehabilitation training. But nerves and brains... are not so easy to recover.

Nerve cells and brain cells are different from other body cells, they do not regenerate.

A person is born with this many brain cells.

Every one that dies is one less, irreparable, unregenerable.

Perhaps the biggest side effect of hibernation that Tang Xin mentioned... is the irreversible damage to brain cells and neurons.

"In fact, mental retardation is not the biggest side effect."

Tang Xin looked up at Lin Xian and said with a smile:

"If the hibernation time is longer... reaching about 20 years, then the hibernating person will most likely become a—"

"Vegetative."

……

Vegetative.

These heavy words made Lin Xian half sober.

He thought of Xu Yiyi.

Professor Xu Yun's greatest purpose in researching hibernation pods was to save his vegetative daughter, Xu Yiyi.

But fate is tricky...

Now Tang Xin said that if the hibernation time is too long, they won't wake up and will become vegetative.

This...

Lin Xian really didn't know what to say.

But fortunately, seeing Tang Xin talking and laughing so easily, it is likely that her research results are to solve these side effects.

"Becoming vegetative... that sounds like really bad news."

Lin Xian chuckled softly:

"Many people use hibernation pods to go to the future decades or centuries to treat diseases, and some people are already vegetative. This is really a joke destiny plays on them."

"But... can your research perfectly solve these side effects?"

"It's currently only in the theoretical stage." Tang Xin giggled:

"But I think there's no problem. Actually, I've been doing research on drugs in this area, aiming to treat Alzheimer's disease, but it hasn't had any therapeutic effect... My thesis is making it difficult for me to graduate."

"But Professor Xu Yun pioneered a new field, which has made my originally useless research results valued. So I am really grateful and admire Professor Xu Yun."

"I see." Lin Xian nodded.

Now he basically understood Tang Xin's research.

It can only be said that everyone's life is like a play.

"I wish you success in your research soon."

Lin Xian raised his wrist and looked at his watch.

00:53

Far past 00:42, his hanging heart also let go.

During this period, he had been paying attention to the situation on both sides of the road.

No extra vehicles came, and the taxi driver was still boredly swiping on his phone in the car.

Perhaps he was overthinking it.

As Tang Xin said, scientists and scholars all over the world are studying things in the field of hibernation... If you want to kill everyone, can you kill them all?

Now the world's scientific community is changing rapidly due to Xu Yun's invention, and new results are born every day. Tang Xin is just one of them, a very ordinary one.

Lin Xian and Tang Xin walked to the taxi together, opened the door for her, Tang Xin sat in, rolled down the window and waved to Lin Xian:

"Then I'm leaving, Lin Xian, see you in Donghai."

"Okay, see you in Donghai."

Buzz...

The taxi started slowly, turned, and disappeared at the corner of the road.

"Cough cough!"

Gao Yang's deliberately obvious cough came from behind.

Lin Xian turned his head.

Saw Gao Yang with a smirk.

"Hehehe, you had a good chat, Lin Xian! You're very charming! This Tang Xin definitely likes you!"

Lin Xian didn't say anything, and didn't deny it.

Everyone is not a teenager anymore, there is really no need to pretend to be stupid about emotional matters. Tang Xin expressed her enthusiasm for him so generously, if he denies it for no reason, it would seem coy.

"Tell me, Lin Xian! What exactly did you do to make people remember you so well?"

"You still have the nerve to ask?"

Lin Xian looked at Gao Yang unhappily:

"If you hadn't been yelling and interrupting her, Tang Xin would have said it when Zhou Duanyun came... I want to know the answer more than you do."

"Oh, anyway, when you two get to Donghai, I guess you'll have to continue being lovey-dovey, it won't be too late to ask then!" Gao Yang's face was flushed, laughed heartily, walked over and put his arm around Lin Xian's shoulders:

"Let's go, let's go home! The classmates reunion is over!"

"Yeah, let's go back."

……

February 8, 2023.

Dragon Country, Shanxi Province, Xi'an City, Beilin District, Youyi Road.

Lin Xian stood at the gate of Shanxi University, watching the students returning to school.

He came to Shanxi specifically after the Lantern Festival.

First, there were a lot of things going on at his hometown. Now that he has money, even if his parents object, Lin Xian still arranged for them to improve their lives.

Second, his only information about Liu Feng, the original author of *Introduction to the Cosmic Constant*, was his academic information, so to find this person, he must come to Shanxi University to continue his search. He definitely had to wait until the school started before he could come, otherwise where would he go to check if the library was not open?

These days, when he had time, Lin Xian often searched the Internet for news about *Introduction to the Cosmic Constant* and Liu Feng.

He searched very carefully.

But he really couldn't find any relevant information.

He didn't understand what the problem was...

Because some places are really contradictory.

If there is no published book called *Introduction to the Cosmic Constant* in the reality of 2023, then where did the ancient book from 600 years later come from?

It can't be that it was published in 2024, and then buried in the coffin in 2024?

That's too coincidental.

And there is another contradiction:

Even 600 years later, this book is still considered by experts to be a worthless book full of errors, so its situation in 2023 must be similar. Which publishing house would publish such a worthless book?

So.

Where did this book come from?

And why was it placed in the coffin?

Why was it full of errors and worthless, but the big-faced cat's father researched something real?

The answers to all these questions...

I'm afraid only the original author, Liu Feng himself, can reveal.

Lin Xian picked up the small note in his hand.

It recorded the information brought out of the dream.

Liu Feng, born in Shanxi in April 1996, entered Shanxi University in 2014, and graduated with a master's degree in 2021.

This year, Liu Feng should be 28 years old, which is still a very young age, four years older than Lin Xian.

Searching for the original author 600 years ago through an ancient book 600 years later is indeed a very interesting thing.

Following the flow of students returning to school, Lin Xian successfully mixed in, entered the campus, and came to the library.

The school library preserves the *Graduate Yearbook* for each year, which is generally compiled by college, with detailed student names, photos, and teacher information.

And the graduate's yearbook contains more information because of the small number of people, which is why Lin Xian came to the library.

Soon, Lin Xian found the *2021 Graduate Yearbook of the School of Mathematical Sciences*, and after flipping through a few pages, he successfully found Liu Feng's name and the photo of his mentor group.

There were not many people in the photo.

In addition to the smiling mentor standing in the middle, there were several students wearing master's uniforms around him.

Lin Xian saw Liu Feng at a glance.

He was not tall, did not smile, held his graduation certificate in his hand, and stood on the very edge.

His appearance was similar to the photo seen in the dream.

Wearing glasses, with ordinary three-seven parted hair, he looked like a scholarly nerd, but he seemed a little unapproachable, which was quite in line with Lin Xian's stereotype of academic researchers.

Lin Xian picked up his mobile phone and took a picture of this page of information.

Then looked at the name of the mentor:

Qi Yan, Deputy Dean of the School of Mathematical Sciences.

"Hmm..."

Lin Xian thought for a while.

Since in 2021, this mentor Qi Yan was still serving as the Deputy Dean of the College, then now it's only 2023, it is likely that he has not retired yet.

It would be best to ask him about Liu Feng. If he was lucky, he could directly ask for Liu Feng's address or contact information, and he could go directly to his door to find him.

……

After arriving at the teaching building of the School of Mathematical Sciences, Lin Xian did see Qi Yan's job photo in the bulletin board on the first floor.

He didn't look very old, definitely under 60 years old.

Following the clues and finding Qi Yan's office, he found that he happened to be inside, reviewing documents.

After Lin Xian knocked on the door and explained his intentions...

Very surprising.

This Deputy Dean mentor actually politely invited Lin Xian in for a chat.

Lin Xian thought that the other party would not pay attention to himself as an outsider... Perhaps because he was a recent college graduate, these older teachers had a natural sense of intimacy with students.

"Liu Feng is a very talented student, I have been his teacher since his undergraduate years."

Qi Yan took a sip of tea and sighed:

"It's a pity for this child. I told him that there is no good way out in mathematics research now, especially for orphans like him from poor families...

...What he should do most is to engage in research in applied mathematics, start a family and establish a career as soon as possible, and stabilize his life."

"But this child, he holds on to the cosmic constant all day long and insists on doing research in this area... Even Einstein denied the existence of the cosmic constant in his later years, let alone Liu Feng. Now the academic circles are ambiguous and have their own opinions on whether the cosmic constant exists or not."

"So you see, what's the point of studying something that is uncertain? It would be fine if Liu Feng really researched something, but in fact, I indulged him for three years during his postgraduate studies, and he still didn't research anything."

"Teacher Qi, what exactly is the cosmic constant? Is what Liu Feng is researching the same thing that Einstein denied back then?" Lin Xian asked curiously.

"Not the same thing at all."

Qi Yan shook his head helplessly and took another sip of tea:

"This is also the most troubling thing about him. I have no idea what he is researching."

"Not only do I not know, but even Liu Feng himself doesn't know what the cosmic constant is."

"But, that's not important. The most important thing is..."

Qi Yan turned his head, looked at Lin Xian, his eyes full of regret:

"Liu Feng's theory..."

"Is full of errors."