A week later, Pang Xuelin appeared in New York again on a special plane.

Pang Xuelin first went to the United Nations building to meet with the new United Nations Secretary-General Dewey Clive and the PDC rotating chairman Plitt Leslie, and then went directly to the Strategic Bureau of the Planetary Defense Council located not far from the United Nations headquarters.

"Director Vader, it's a pleasure to say goodbye to you!"

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

Vader was obviously a little surprised by Pang Xuelin's arrival, and went straight to the road.

After five years of not seeing, Vader didn't look like much had changed, he was smoking a cigar, the smoke covering his grim face, and the edge was still the same.

Pang Xuelin glanced at Cheng Xin in the back, and Cheng Xin withdrew from Vader's office with his entourage, and did not forget to close the door before going out.

Pang Xuelin stepped forward, pulled the swivel chair in front of the desk very casually, sat down opposite Vader, and said with a smile: "Mr. Vader, five years ago, I asked you if you would like to come to work in the office of the person facing the wall, and you chose to refuse. Now, I would like to ask, would you like to come and work in the Galapagos Islands? As long as you want, you are the chief consul of Star Ring City, and all the construction and development of Star Ring City and the Star Ring Advanced Research Institute in the next twenty years will be led by you. ”

Vader took a deep puff on his cigar, the smoke obscuring the subtle changes in his face.

"Why me?"

Vader said coldly.

A member of the office of the Wall-Facer, and the chief administrative officer of Starwarp, this power is completely different.

Today's Star Ring City is a well-known existence both in the academic community and in the world.

The only port city designated by the wall-facing city has invested heavily in basic science, and there are even rumors that Star Ring is preparing to develop controlled nuclear fusion technology.

Not to mention anything else, the annual PDC special fund of up to $50 billion in Star Ring City alone is enough to make anyone salivate.

Therefore, Vader was a little surprised that Pang Xuelin suddenly proposed that he take on the position of chief consul of Star Ring City.

Pang Xuelin laughed and said: "I am very optimistic about you, in fact, I was optimistic about you five years ago, and the overall planning ability and firm belief you showed in the implementation of the ladder plan are what I need." Also, I see ambition in your eyes. I need people like you to escort Star Ring City, and the future of mankind also needs people like you to exist, and I believe that you can bring glory to Star Ring City. And I've heard Vadim say that you seem to be a little tired of being in the position of PIA director and want to go to the future through hibernation! I wish you could work for me for twenty years before hibernation! ”

"And what can you give me?"

The watch on Vader's face didn't change anything.

Pang Xuelin said: "Absolute power! But there is a premise, I want you to complete all the technical accumulation of controlled nuclear fusion, modern agricultural factories, and electromagnetic orbital space development systems within 20 years! ”

Vader frowned and said, "Professor Pang, your requirements are a bit high, and I'm afraid the annual investment of 50 billion US dollars may not be enough." ”

Pang Xuelin smiled faintly: "How much profit do you think an ultra-high-density energy storage battery can bring to Star Ring City every year?" ”

"Ultra-high-density energy storage batteries?"

Vader had a look of surprise on his face.

Pang Xuelin nodded.

The ultra-high-density energy storage battery is naturally the kind of super battery brought from the wandering earth world.

Although it cannot make human energy technology develop by leaps and bounds in a short period of time, it can profoundly change the global energy structure.

The three-body world can already produce high-purity graphene materials in large quantities, and it is not too difficult to manufacture super energy storage batteries in the wandering earth.

In fact, in the three-body world, there is also the concept of graphene batteries.

But this is not an accurate concept, to be precise, it is basically to add a little graphene to the material to improve part of the energy of the lithium battery, which can be called a graphene-based lithium-ion battery.

In the lab, scientists have been able to increase the specific energy of graphene-based lithium-ion batteries to more than 600wh/kg, which is twice as much as the best lithium batteries on the market today.

Moreover, this kind of battery, a single full charge only takes less than 8 minutes, the service life is four times that of traditional hydrogenated batteries, twice that of lithium batteries, and the weight is only half of that of traditional batteries, which can be regarded as a revolutionary breakthrough in the field of energy storage batteries.

But this is only the data in the laboratory, and when it comes to the practical stage, it is basically dumb.

The reason is simple, first of all, the cost of all-graphene batteries is very high, and it is difficult to prepare, and it is almost impossible to mass-produce. Some of the surprising data that is now being published is mostly from extremely pure graphene batteries, only in the concept stage or in the lab.

Secondly, the role of "doped graphene battery" in lithium batteries is a conductive agent or electrode embedded lithium material, but compared with the low cost of traditional conductive carbon and graphite, the energy improvement brought by the former is not enough to attract manufacturers.

Third, graphene materials have high specific surface area equivalence, which is incompatible with the current technical system of the lithium-ion battery industry.

In addition, problems such as the impact of other materials and the difficulty of dispersion process are all restricting the application of graphene in lithium batteries.

And theoretically speaking, the theoretical capacity of pure graphene anode material is only 0.78KWh/kg, which is only much better than the lithium battery on the market, but compared with the legendary theoretical capacity of 10kwh/kg of lithium-air battery, the two are not the same level at all.

And what Pang Xuelin wants to engage in, the official lithium-air battery, in the wandering earth world, it has a more accurate name, graphene-based lithium-air battery.

Lithium-air batteries are not a new concept.

Since oxygen in the air is used as a living substance on the cathode, the capacity density of the cathode is theoretically unlimited, and the capacity can be increased.

In addition, if lithium metal is used for the anode, the theoretical capacity will be increased by one digit compared to lithium-ion rechargeable batteries.

However, lithium-air batteries also have a fatal drawback, that is, lithium hydroxide, a solid reaction product, will accumulate at the positive electrode, so that the contact between the electrolyte and the air will be blocked, resulting in a halt in discharge.

In the world of the earth, scientists have developed a two-dimensional graphene film with a large specific surface area, which can allow lithium hydroxide generated by solid reaction to accumulate on the film, thus solving this long-standing problem in the battery industry.

This technology has been quite mature in the world of the wandering earth, and in the three-body world, because of the industrial production of high-purity graphene has made a breakthrough, as long as it continues to invest in research and development in this direction, Pang Xuelin expects to be able to make such a battery within three years.

Vader was a little undeniable about the so-called ultra-high-density energy storage battery, and after a moment of silence, he raised his head and said, "Professor Pang, I hope to go to Star Ring City to have a look, as for whether to agree to your request, it depends on the results I see next in Star Ring City." ”

Pang Xuelin laughed and said, "Welcome at any time!" ”

……

Downstairs from PIA's headquarters, Pang Xuelin saw Cheng Xinzheng chatting with Vadim.

Seeing this honest aerospace engineer, Pang Xuelin was a little emotional.

According to the original drama, Vadim would have been killed by Vader at this time, but now, he is still alive and well, and it can be seen that his life is not bad.

"Cheng Xin, it's almost time for us to go!"

"Oh, okay, Brother Vadim, then I'll go first, and I'll have more contact later!"

Pang Xuelin and Cheng Xin got into the car, and Cheng Xin said, "Professor Pang, what did Director Weide say over there?" ”

Pang Xuelin said with a smile: "He said that he wanted to go to Star Ring City with me to have a look, and if Star Ring City met his requirements, he would agree." ”

Cheng Xin nodded and didn't ask any more.

The convoy returned to the Hilton Hotel, and as soon as he arrived at the door of the hotel, Pang Xuelin found that the hotel's guards seemed to be much stricter than before.

When he got out of the car, he saw a United Nations official hurriedly greet him and said, "Professor Pang, I'm Bryant, the liaison officer of Rediaz the Wall-Facing One, and Rediaz wants to see you!" ”

Pang Xuelin couldn't help but be stunned.

He and Rediaz didn't have much contact, and in fact they had little contact with each other in private, except for those two roundtables.

Rediaz is busy promoting the research and development of a stellar-level hydrogen bomb every day, and Pang Xuelin is taking care of his Star Ring City by himself, plus he has been hibernating for the past few years, and the two have not intersected at all.

What is Rediaz looking for himself at this time?

It's unlikely that someone will crack his strategic idea.

His stellar hydrogen bomb hasn't even been built yet, let alone the weird evidence.

With such questions, Pang Xuelin met Rediaz in the reception room of the presidential room.

"Hello, Professor Pang!"

"Hello, Mr. Rediaz!"

The two shook hands and exchanged pleasantries for a moment.

Pang Xuelin got straight to the point and said, "Mr. Rediaz, is there anything to do with me this time?" ”

Rediaz smiled: "Actually, it's nothing, I just want to come and talk to you, I'm about to hibernate." ”

"Huh?"

"The stellar hydrogen bomb requires powerful computing power, and the current level of supercomputers cannot support such a project, so I can only wait for the supercomputer to produce results before waking up."

"I see."

Pang Xuelin nodded.

Rediaz was silent for a moment and said, "Professor Pang, I actually know that what happened half a year ago is true...... Taylor and I are old rivals, I can guess what he thinks, and I'm sure he can guess my thoughts too. It's just that the people of ETO probably didn't expect that this matter would be taken by you to fight back, which not only solved the idea that the wall-facing plan might be questioned by the public, but also put the development of ETO in a predicament. I came here today, one is to express my gratitude to you, and the other question, I want to ask, if my plan is cracked by ETO, but ETO does not announce it, but only informs the Three-Body Civilization so that they can prepare for the end of the war, then is such a plan still meaningful? ”

Pang Xuelin smiled slightly: "Mr. Rediaz, I once said that the plan is not immutable, and our wall-facing plan can be modified at any time according to the latest scientific and technological development of mankind, and even reinvent and reinvent the wheel. As for whether it will work or not, that's not something we have to think about. We just need to fulfill the duties of a wall-facing person, and leave the rest to our descendants, we must learn to trust them! ”

Rediaz said thoughtfully, "Professor Pang, I understand. ”

Next, Pang Xuelin and Rediaz relaxed and exchanged some views on the current international political and economic situation.

That night, Pang Xuelin and Rediaz had a meal together.

Early the next morning, Rediaz went to the hibernation center to prepare for hibernation.

Two days later, Pang Xuelin and Vader took a special plane to Star Ring City to investigate.

A month later, Vader agreed to his request to take over the Star Ring.

In the same month, Pang Xuelin set up a graphene lithium air battery research and development team.

Half a year later, in February of the ninth year of the era of crisis, Pang Xuelin took Cheng Xin back to China and held more in-depth talks with the Chinese high-level.

In March, the Chinese side announced that it would provide further support for the construction of the second phase of the Transawarus project.

At the same time, Pang Xuelin went to see Zhuang's mother, as well as Li Yao and his wife.

Zhuang's mother has remarried, and her life is okay.

Pang Xuelin asked her if she would like to go to Star Ring City to work and live, and after thinking about it for a long time, Zhuang's mother finally chose to refuse.

In April of the same year, Pang Xuelin and Cheng Xin returned to Star Ring City, and Pang Xuelin left Vader a technical development outline for the next 30 years of the Star Ring Advanced Research Institute, and then entered a state of hibernation with Cheng Xin.