Pang Xuelin couldn't sleep for a while, and after lying down for so many days, he had already slept enough.

He's thinking about where he's going to go.

In the world of the Dark Forest, Pang Xuelin spends most of his time fulfilling the responsibilities of a wall-facing person, and rarely thinks about academic issues.

Now that the brain has been repaired for a long time, Pang Xuelin can't wait to find a new direction to study.

At present, the mass production and preparation of high-purity electronic-grade single-walled carbon nanotubes is progressing steadily, and it is expected that it will be officially put into production by the end of the year.

At that time, Dad's Xinkai Material Technology Co., Ltd. will become the world's top manufacturer of carbon nanotube materials.

Research on the two application directions of single-walled carbon nanotubes is also underway, and it is expected that results will be produced next year.

In the field of graphene materials, the preparation experiment of high-purity and large-scale graphene thin film materials has been successful, and if nothing else, it will be seen in Nature or Science in another month or two.

As long as the large-scale graphene thin film material is completed, then Pang Xuelin can consider promoting the graphene lithium-air battery project.

The significance of graphene lithium air battery is self-evident, and it plays a very important role in automobiles, electronic equipment, and military fields.

In the automotive field, the energy density of 8.62kwh/kg after mass production is enough to make a car run to the ground on a single charge.

Take Tesla as an example, the battery pack of Tesla cars is placed in the chassis position between the front and rear axles, and its weight can reach 900 kilograms, but the standard capacity is only 85kWh, which is equivalent to 85 kilowatt-hours of electricity, and the range is about 500 kilometers.

If these batteries are replaced with lithium-air batteries, 900 kg, a standard capacity of 7,700kwh, and a range of more than 40,000 kilometers.

A car, charged once, can be driven for several years.

This is almost a dimensionality reduction blow for both fuel vehicles and ordinary electric vehicles.

Its influence will even extend to the entire energy field, completely changing the global energy industry pattern.

As for in the military field, the application is even more extensive.

Needless to say, all-electric tanks, as well as various armored transport vehicles.

Electric helicopters, electric transport aircraft, electric strategic bombers with unlimited global cruise capability, all-electric aircraft carriers and their escort warships, and all-electric submarines are all enough to change the global political and military landscape.

With this strategic artifact as an introduction, if you want to promote the aerospace aircraft and electromagnetic orbit space launch system projects in the future, you will get the unconditional support of the state.

Now the question is, who is the right person to operate such a product?

Dad's Xinkai Material Technology Co., Ltd. can make materials, but the interests involved in the field of lithium-air batteries are too great.

Even if his father can control it, Pang Xuelin doesn't want him to get involved in such an industry.

Is there anyone you can trust besides your parents?

Pang Xuelin pondered, and I don't know how long it took, Pang Xuelin's eyes suddenly lit up.

Why do you want to find a trustworthy person in reality, isn't there one right now?

Tomoko!

She is undoubtedly the most suitable person.

There are almost no flaws in her humanoid appearance, unless she is dissected, and other examinations, even if they are transmitted by X-rays, MRIs and other equipment, all they get are a healthy human body.

Even Tomoko's own weight is about the same as that of a normal human.

And Tomoko will never betray herself, and she has a strong learning ability, so she can train Tomoko to be a right-hand man in the real world.

As for what kind of identity should Tomoko appear next to him, is it more appropriate?

Pang Xuelin scratched his head a little.

"Forget it, let's wait until I am discharged from the hospital to ask Tomoko for my opinion."

When Pang Xuelin thought about this, his heart suddenly relaxed.

After determining his next layout in the industry, Pang Xuelin began to think about the next research direction in the field of mathematics.

After all, mathematics is my main job, and materials and everything is just a side job.

Ponzi geometry, the BSD conjecture, and the ABC conjecture are all in the past tense, and it's time to climb to new heights.

After thinking about it, Pang Xuelin set his goal on Goldbach's conjecture.

If you want to choose a mathematical conjecture that the Chinese people are most familiar with, Gechai is undoubtedly one of the links that cannot be bypassed.

The reason is very simple, the Chinese mathematician Mr. Chen Jingrun has made a world-renowned contribution to the proof of Goldbach's conjecture.

At the beginning, the mathematical community proposed to use the large sieve method to prove the Goldbach conjecture, and gradually reduce the number of primes in the prime numbers, and use the approximation method to prove the Goldbach conjecture.

This was the best way to prove the Goldbach conjecture at the time, and it did produce great results.

From the Norwegian mathematician Bi Long's, to Chen Jingrun's.

Chen Jingrun's contribution to the field of Goldbach's conjecture using the large sieve method can be called the pinnacle of Gochai's work.

However, for nearly half a century, the Goldbach conjecture never made a breakthrough.

Pang Xuelin decided to take this problem as his next new goal.

……

Early the next morning, Pang Xuelin asked to be discharged from the hospital, but the attending physician in charge of him disagreed, saying that the cause of Pang Xuelin's sudden coma had not been found and that he needed to be observed for a period of time.

Pang Xuelin was naturally unwilling, but Yao Bingxia was also helping on the side, Pang Xuelin really had no choice but to agree to stay in the hospital for another day.

In the following day, Pang Xuelin underwent various examinations again.

Cranial MRI, B-ultrasound, blood test, electrocardiogram, electroencephalogram...... After all kinds of examinations, Pang Xuelin couldn't be healthier.

In fact, these indicators are almost exactly the same as when Pang Xuelin was in a coma.

The doctor was amazed and had to let Pang Xuelin leave the hospital.

Back home, Pang Xuelin and his parents first took Yao Bingxia to his grandparents' house.

This time, he deliberately concealed the fact that he was in a coma from the two old men, and his grandparents didn't care too much.

Pang Xuelin is so busy with work, it is normal for him to appear every other month and a half.

Just that night, Pang Xuelin sent Yao Bingxia on the plane back to Beijing.

She needs to participate in the next National Day art show, and this time she took leave from school, and she was already taken extra care of by the counselor.

Now that Pang Xuelin has woken up, she has to rush back to school to participate in rehearsals.

The two reluctantly said goodbye, and when Yao Bingxia's figure disappeared at the security checkpoint of the airport, Pang Xuelin drove back to his bachelor apartment at school.

When I returned home, the furnishings at home had hardly changed from half a month ago.

Pang Xuelin pondered for a moment and summoned Zhizi out of the system space.

"Professor Pang, is there anything you need me to do?"

Zhizi obediently stood in front of Pang Xuelin and said.