Inspiration is elusive.

Just as it comes inadvertently, it often leaves inadvertently.

At this moment, Lu Zhou was not willing to waste a second.

Entering the nearest library and sitting down, he put the pen and paper he bought from the convenience store on his desk, and made all the preparations before starting work.

Of the more than 20 libraries at Columbia University, this one is open 24 hours a day and offers cheap and delicious sandwiches and coffee in the lounge area.

Here, he can stay as long as he wants, without worrying about his train of thought being interrupted.

Closing his eyes, Lu Zhou thought about the equations he had written earlier in his mind.

For what you have researched, it is not so simple to forget. Even if the data is not at hand, he can deduce it on the spot according to the logic he has used.

It doesn't take much time.

And by taking this opportunity, Lu Zhou can integrate new thinking into the theory when reconstructing it......

"In a system with N electrons, the total wave function can be written as the product of the wave function of all single electrons......

Muttering to himself, Lu Zhou wrote the first line of equations on the paper.

【Ψ（r1，r2，……，rn）=∏Ψt（rt）。 】

Without stopping there, the tip of the pen quickly moved to the next line with his gaze.

"Then, introduce the Hartree equation!"

Lu Zhou's voice gradually carried a hint of excitement.

Although only the first step was taken.

But at this moment, in front of his eyes, it was as if he had seen the dawn of victory.

【{pi2/2m+V（ri）+1/4πε0∑∫drf|Ψj（rj）|2e2/|ri-rj|} Ψi（ri）=EiΨi（ri）】

【……】

When inspiration comes, ideas pour out like a diabetes collapse, and you can't stop it.

The tip of the pen jumped on the paper, faster and faster, faster and faster.

As the lines of calculations leap onto the paper, the theoretical model that gradually takes shape is like a spider web compiled by logic.

Under the system constructed by this large net, all the cumbersome and complex theories are included, and all the collisions between particles, the interaction between electrons, and even all the changes at the microscopic level that can be taken into account are abstracted into the language of mathematics and described by mathematical methods.

"This line of thinking works!"

"We don't need to explain and describe the system wave function of each particle's motion, we just need to try to find the spatial wave function of the particle density with only 3 variables......"

"When all the particles in the system can be calculated, the physical properties of the material can be expected!"

"Even if it's just a limited range of expectations!"

Whispering to himself, the light flickering in Lu Zhou's pupils became brighter and brighter.

The pen held tightly in the fingertip is like a sharp sword, piercing the darkness that no one snoops on, and dispelling the confusion that entangles around the truth.

Immersed in research, Lu Zhou gradually forgot time, forgot everything in the outside world, and even forgot his own existence.

That's it, I don't know how long it has been.

When he finally stopped the pen in his hand, the originally dark night sky outside the window also shimmered with the glimmer of morning light in the haze.

At this moment, a ray of elongated morning light crossed the antique window eaves and bookshelves, and sprinkled impartially on the lines of clean and tidy handwriting.

Looking at the scratch paper in front of him, Lu Zhou's tightly knit brows finally stretched a heartfelt smile.

After months of hard work, it finally came to fruition at this moment.

The questions that could not be answered were all answered in this instant.

Especially when he used the last line of the equation to seal the dome of the entire building, he felt from the bottom of his heart that he was the happiest person in the world.

The kind of happiness that accompanies the birth of ignorance to knowledge is far superior to all entertainment in the world......

"Perhaps, this is the feeling of dying at the end of the day."

With a sigh of emotion in his heart, Lu Zhou put away the pen in his hand.

Maybe it was because his expression was so focused that it aroused the curiosity of the red-haired guy sitting next to him.

There are many people who rush papers in the library, but few people who drive out of the sense of mission.

"Hey, buddy, rushing papers?"

Lu Zhou didn't answer, and stacked the scratch paper in a stack.

Although the theories were already in his mind, these were valuable manuscripts.

Maybe one day in the future, he will donate them to a museum or library.

But for now, he still has to keep these things for the time being.

"Theoretical chemistry?" Seeing that Lu Zhou ignored him, the man was not discouraged, especially when he saw the familiar letters on the scratch paper, he immediately said with interest, "It's a coincidence, I also study theoretical chemistry, who is your mentor?" ”

Lu Zhou smiled faintly: "If you are talking about theoretical chemistry, I don't have a mentor." ”

If he could, he would have liked to have a mentor to guide him.

But his theory is a series of its own, and not many people can understand it, let alone guide him?

The red-haired guy looked at him in disbelief: "You taught yourself?" Incredible...... Anyone would teach themselves this? What is your major? ”

Lu Zhou thought for a while: "Probably, it's mathematics." ”

No matter how shocked the red-haired little brother was, Lu Zhou didn't stay in the library for long, but took scratch paper with him. Sha Institute.

Although the sky has turned white, the lights in the institute are still bright.

Sitting in the center of the room, "Anton" is like a cold goddess. It's not just her worth that is expensive, her appearance fee, and the maintenance after every appearance, which is also extremely expensive.

At this moment, the engineers of the institute are busy working in front of the chassis.

There is no doubt that they have been all night long.

. This is true of the researchers at the SHA Institute, as well as by the owners of this institute.

David Shaw didn't choose to rest, as he said, but still sat in that position, staring at Anton behind the floor-to-ceiling window with a frown, lost in thought.

At that moment, he suddenly heard footsteps.

Looking back, I saw Lu Zhou appear at the door of the laboratory.

Noticing the dark circles on his face, David then looked at the manuscript paper in his hand and said, "You have been up all night?" In fact, you should take a good rest, and you will be busy after three days. ”

Lu Zhou put the manuscript in his hand on the desk and said in a relaxed tone: "Aren't you the same?" ”

The two looked at each other and suddenly laughed in unison.

The researchers in the laboratory turned their confused eyes to this side, not understanding what the two bigwigs were laughing at.

However, Lu Zhou didn't explain anything, and their boss didn't ask at all.

Because, there is no need for this.

After laughing enough, David got up from his office chair and said in a joking tone, "I guess we're pretty close to the finish line." ”

"Yes," Lu Zhou smiled and nodded, and continued, "I can guarantee that dawn is just around the corner. ”8)