Top student: All my teachers are academic whizzes!

Dinner was quite lavish; a faded blue checkered tablecloth covered the eight-immortal table, and four dishes and a soup were laid out to the brim.

There was stir-fried cured pork with bracken, braised pork ribs, fried eggs, green vegetables, and chicken soup.

Han Chuan, who hadn't eaten home-cooked meals in a long time, picked up his chopsticks and couldn't stop eating, as the familiar aroma filled his nose. He ate bowl after bowl.

The white rice in the enamel bowl was plump and full, soaking up all the broth from the dishes, making every bite exceptionally delicious.

The saying "a half-grown boy can eat his father out of house and home" isn't just a joke. He's seventeen this year, but to be precise, he won't officially turn seventeen until the Lunar New Year in December, which is the final sprint stage of his growth.

At this stage, bones and muscles are growing rapidly, and metabolism is incredibly fast. Even if you haven't done much during the day, you can easily eat two large bowls of rice.

Eat slowly.

Across the table, Li Xiumei glanced at her son wolfing down his food, picked up a piece of pork rib, put it in Han Chuan's bowl, and said with a smile.

Swallowing the food in his mouth, Han Chuan grinned and said, "Mom, your cooking is so delicious! The food in the school cafeteria is nowhere near as good as yours. It's the same few dishes every day, I'm so tired of it."

Hearing this, Li Xiumei laughed and said, "If it smells good, eat more. I'll pack some more meat and vegetables for you to take back to school tomorrow night. Seal it well, and it'll last for a few days. It'll be a good way to improve your meals at school."

"good!"

Han Chuan ate a couple of mouthfuls of food, then filled another bowl before he was full.

.....

In rural areas, people usually eat dinner very early, typically finishing around 5 or 6 pm.

After finishing his meal, Han Chuan strolled around the village for a while, visited his uncles' houses, and then returned to the second floor of his own house.

The house is a two-story self-built house. His parents live on the first floor, he lives on the second floor, and the roof of the third floor is used to store some miscellaneous items.

Han Chuan walked to the desk, sat down, unzipped his backpack, and took out two test papers: one was a physics test paper, and the other was a biology test paper.

Clearly, even during the two-day monthly break, the school teachers didn't let the students be idle.

As if it were pre-arranged, during each monthly break, teachers from each subject would take turns giving them two or three test papers, averaging at least one per day. The guise was "reviewing the old to learn the new," but in reality, it was to prevent them from relaxing during the break and being overtaken by others.

After tackling the biology exam, which was easier for him and was his forte, Han Chuan moved on to the physics exam.

His physics level was similar to his math level when he was first reborn, basically at the junior high school level.

However, after nearly a month of study, he has caught up quite a bit in physics.

On a test paper with a score of 110, I can now get about 70-75 points.

Although there is no book spirit like 'Ge Jun' to tutor him in physics, he is catching up at a speed not much slower than in mathematics thanks to another cheat code after his rebirth—the ability to materialize knowledge.

On the one hand, the physics knowledge in junior and senior high school is relatively simpler than that in mathematics, and many things can be solved by memorization.

On the other hand, the ability to visualize knowledge points is really useful!

Especially for physics, the most difficult parts in junior and senior high school are usually concentrated in a few modules that require highly abstract thinking and comprehensive application skills.

For example, the integration of mechanics: momentum, energy and complex processes, especially the combination of conservation of momentum and conservation of energy.

Or it could be the motion of charged particles in an electromagnetic field—a combination of geometry and physics, etc.

These parts, which are generally considered the most difficult, are actually easier for him to understand now.

After finishing the multiple-choice and fill-in-the-blank questions, Han Chuan turned his attention to the problem-solving questions.

The first major question is a comprehensive question about "connecting bodies and springs".

A slider A with a mass of m = 2 kg slides down a smooth inclined plane from a height h = 1.8 m above the horizontal surface, starting from rest. The end of the inclined plane smoothly connects to the horizontal surface. A slider B with a mass of M = 3 kg is placed at rest on the horizontal surface. A light spring with an original length L0 = 0.5 m and a spring coefficient k = 200 N/m is fixed to the right side of B, while the other end of the spring is free.

The coefficient of kinetic friction between A and the horizontal surface is μ=0.2, while there is no friction between B and the horizontal surface. After an elastic head-on collision between A and B, B begins to compress the spring.

[Find: 1. The magnitudes of the velocities of A and B immediately before the collision; 2. The individual velocities of A and B immediately after the collision; 3. The maximum compression of the spring.]

Sitting at his desk, Han Chuan stared at the challenging problem in front of him, pondering it intently.

I don't know how much time passed, but a faint silver-blue light quietly lit up the world before my eyes.

The handwriting on the exam paper slowly emerged. The physics questions, which were originally just printed on paper, seemed to come alive at this moment.

The characters, like a holographic physics engine, gradually constructed a complete and incredibly clear physical picture in his eyes.

The smooth sloping surface in the image above the question stands upright in the field of vision. The most striking feature is the height scale, which divides the 1.8-meter height into 18 illuminated 0.1-meter scale lines, each marked with the change in gravitational potential energy.

Slider A remained stationary at the top, and as it slid down, a pale golden cloud of energy gradually appeared in the center of the block.

The complex motion was instantly broken down and made intuitive; at the moment of collision, both were stretched, and a brief blue halo exploded on the surface at the same time.

That's contact force.

Immediately afterwards, the two spheres of mass underwent a very brief deformation and then quickly bounced apart.

The momentum transfer process can be clearly seen; an ice-blue momentum pulse flows from A to B, and the thickness of the pulse reflects the energy value of the collision....

Although there were no numerical values ​​on it, Han Chuan could intuitively feel the changes in various physical parameters such as the slider, spring, and gravitational energy release.

The superimposed image of the two motions perfectly matches the parabolic trajectory he "saw".

His sense of time was stretched to an extreme degree, and he seemed to be able to observe the velocity and displacement vectors of the slider and spring within each infinitely subdivided time element.

This is no longer the result of mathematical formula derivation, but an inevitable outcome of the natural manifestation of the physical landscape.

......

I don't know how much time passed, but the silvery-blue light faded, and all the three-dimensional, dynamic physical images disappeared like the receding tide.

The physics exam paper and the questions in front of me reappeared in my field of vision.

This is another function of the cheat he gained after his rebirth: the ability to materialize deeply thought-provoking knowledge and problems into visible images.

For Han Chuan, the existence of a book spirit like Ge Jun would undoubtedly be of great help to him, just like having a top-notch tutor who could teach him 24 hours a day.

But compared to the existence of the Book Spirit, he felt that the ability to materialize the knowledge and problems he was thinking about into a visible picture was more important.

While the former can be compensated for or replaced to some extent by hiring a tutor.

Han Chuan could hardly find any words to describe the feeling; it was as if it were a miracle.

If I had to put it into words, Han Chuan thinks this might be a manifestation of thought.

It's like a dream; the subconscious mind materializes the knowledge points and problems in front of it into a clear picture.

Over the past month, he has finally figured out his "golden touch".

There is no such thing as photographic memory, nor is there anything that can be directly absorbed and understood.

One is the existence of a "book spirit" manifested in the textbook, but not every textbook or every book can achieve this.

Even now, Han Chuan still doesn't know how he summoned the big shot 'Ge Jun', nor has he seen any other books summon other book spirits.

The book "Elementary Differential Geometry" edited by Su Buqing, which he specially borrowed from the school library last time, did not summon the spirit of the old master Su.

Of course, it's also possible that he was limited because he couldn't understand the content of the book.

But afterwards he looked for other textbooks on physics, chemistry, biology, Chinese, English, etc., but still couldn't summon the book spirit.

So even now, Han Chuan still doesn't understand what conditions are required for this first function.

His dream of using this ability to summon super-great scholars like Qian Xuesen, Yang Jian, Hua Luogeng, and Chen Jingrun to teach him was also shattered.

The second ability is the materialization of knowledge, which was just triggered.

Compared to the first ability to summon "Book Spirits", Han Chuan had roughly figured out how to trigger the ability to materialize knowledge.

Simply put, it means that in-depth thinking about a knowledge point or problem has a probability of triggering it.

This manifests as the knowledge points and questions in textbooks or test papers being visualized into intuitive images or dynamic models that he can understand.

This ability is probably based on the depth of his knowledge.

Knowledge points and related questions that he already knows by heart cannot be triggered; and knowledge points and questions that are too profound for him to understand at all cannot be triggered either.

Although the conditions are somewhat harsh, for Han Chuan now, this is undoubtedly a rocket booster to help him take off in his studies!

However, he still doesn't quite understand the physics problem in front of him.

While pondering, Han Chuan pulled out a physics textbook he had borrowed from the library from his bag. It was a very old edition of "Theoretical Mechanics," published in 1952 by Mr. Zhou Peiyuan.

He borrowed the book hoping to try summoning Mr. Zhou's book spirit, just like Su Buqing did, but he gave up after finding it wouldn't work.

However, unlike the "Elementary Differential Geometry" that had already been returned, Han Chuan kept this "Theoretical Mechanics".

He discovered that even without being able to summon Elder Zhou's book spirit, he could still understand some of the contents.

Of course, more importantly, some of the knowledge points in this textbook happen to complement those in junior and senior high school physics textbooks.

This is the core reason why he left this book behind.

Han Chuan opened his high school mechanics physics textbook and then opened the somewhat yellowed "Theoretical Mechanics" book. The musty smell of the paper mixed with the fragrance of ink wafted into his nostrils.

The textbook published in 1952 had a completely different layout from current textbooks—traditional Chinese characters were arranged vertically, mechanics formulas were marked with old-fashioned symbols, and some letters were no longer commonly used.

He flipped through the physics exam paper, page by page, looking for the chapters on elastic collisions and spring vibrations.

He had read part of this old textbook on and off before, and Han Chuan slowly studied it, comparing it with the difficult questions on the physics exam.

Just then, the question on the exam paper about sliders and springs suddenly trembled slightly.

It wasn't the textbook that was moving; rather, the physics problems, numbers, and diagrams seemed to be lifted off the page by some force and began to rearrange and recombine.

Han Chuan subconsciously leaned back; this wasn't the first time he had experienced this ability to 'manifest knowledge'.

But then he realized that this time it seemed different from the ability to materialize knowledge.

The open book "Theoretical Mechanics" on the table seemed to be glowing.

Then, a line of text slowly emerged from the page.

Instead of printed type, the characters are handwritten words suspended above the paper with a silvery sheen, the font being somewhere between cursive and semi-cursive scripts, with clean and crisp strokes.

Completely different from Ge Jun's sharp, almost tearing-through-paper style, this line of writing was composed, like writing a couplet on rice paper with a brush, each character exuding a relaxed ease.

"Who are you?"

Upon seeing the handwriting, Han Chuan was stunned for a moment, and then his heart began to pound violently.

This is... the second Book Spirit?

Swallowing hard, Han Chuan asked excitedly, his voice slightly stammering, "You are... Mr. Zhou Peiyuan?"

"Hmm? You know me, little one."

The suspended characters swayed slightly, as if deep in thought.

Han Chuan took a deep breath, nodded vigorously, and said, "Of course I know you! You are the founder of modern mechanics in China!"

"The founder of modern mechanics?"

Upon hearing this, Mr. Zhou Peiyuan chuckled and then wrote again, "I cannot accept this title. There are many people who are more outstanding than me."

In the textbook of "Theoretical Mechanics", Mr. Zhou paused for a moment before asking a question.

"By the way, where is this? Little one, what's your name?"

Having witnessed Ge Jun's example, Han Chuan wasn't too panicked this time. He quickly explained the whole situation.

"2009...that's such a distant future."

Zhou Peiyuan's handwriting lingered for a long time on the yellowed pages of "Theoretical Mechanics," longer than any previous pause.

The silver strokes suspended on the paper trembled slightly, as if digesting the weight of the number itself.

Han Chuan sat at his desk, watching the line of writing remain unchanged for a long time, when he suddenly realized something.

For him, 2009 was a year of rebirth and return.

But for this old gentleman, if we count from 1952, when "Theoretical Mechanics" was published, to 2009, it was a full 57 years.

Half a century!

Anyone who receives this information would likely be shocked.

I don't know how much time passed before a line of text reappeared in the textbook of Theoretical Mechanics.

The strokes were much slower than before, each character was written carefully, and the handwriting contained endless anxiety and anticipation.

"Xiao Han, you just said you're in 2009?"

"Yes." Han Chuan nodded vigorously and replied affirmatively.

"Then let me ask you, how is our country developing now?"

.....

PS: Requesting monthly tickets, recommendation tickets, and comments! Even if you don't have tickets, feel free to leave a comment. It's a new book, so I'm reading this now. (๑′ᴗ‵๑) LI Lᵒᵛᵉᵧₒᵤ