"cough--"

On the lunar rover, when he heard the light cough from the communication channel, the man sitting next looked at Lu Zhou and asked with concern.

"what happened?"

"Nothing, it's just a little itchy nose ..."

He couldn't touch the nose of his nose across the mask of the space suit, and sucked his nose a bit awkwardly. It feels really uncomfortable to want to sneeze but can't make it.

I don't know who is thinking about himself.

Putting this aside for a moment, Lu Zhou cast his eyes out of the car window and looked at the city not far away leaning on the edge of the crater, and could not help feeling a little bit of emotion.

"I designed that blueprint, but I didn't expect that a hundred years later, it would be so prosperous here."

The man sitting next to him smiled and said.

"It looks like everything you expect is fulfilled."

Lu Zhou nodded.

"Forget it, at least half of it has been achieved."

At this moment, the man in his early thirties, sitting next to him, called Ye He, was the mayor of Guanghan. After hearing that East Asia Power led the team of the second-generation controllable fusion reactor site, the Mayor Ye personally came to receive his party.

After hearing Lu Zhou's words, Ye He smiled in a joking tone: "Can you ask what the remaining half is? I also ask Academician Lu for advice."

Lu Zhou: "Energy."

The moment he heard these two words, Ye He froze slightly, a slight surprise in his eyes.

Although this is no secret, for a scholar who just woke up from the dormant cabin last month and from the era of a hundred years ago, in one word, it pointed out the biggest bottleneck facing the development of Guanghan City. It is inevitable that it will cause some surprises.

"You see it?"

Lu Zhou smiled slightly.

"That's right."

Strictly speaking, the moon is not suitable for the development of densely populated cities. The single resource and excessive maintenance costs have severely limited the industrial development threshold here.

Unlike on the earth, compared to the earth where controlled fusion technology has blossomed everywhere, the energy cost of the broad cold special economic zone that still uses solar energy can be said to be quite high.

It's not that people here don't want to popularize controlled fusion technology, but that it is too difficult to build a nuclear fusion reactor on the moon.

The first of these is the problem of thermal buildup in a vacuum. According to a rough estimate, the heat sink required to build a first-generation fusion reactor can cover almost half the moon.

Lu Zhou estimated that without the support of the second-generation controllable fusion technology, Guanghan City would be able to grow to its current scale, which is basically the end.

Unlike here on Earth, the entire artificial ecosystem and life support facilities are completely maintained by energy. In other words, people consume precious energy from the moment they set foot on the moon.

In the early days, there were not many people in Guanghan City. It was only the scale of a scientific research station. A solar array with a circular mountain area and an energy storage facility the size of a scientific research base could fully meet the needs of a day and night rotation throughout the colony.

However, nowadays, the whole Guanghan city rarely says that there are 100,000 permanent residents. As a tourism, business and scientific research center of the Earth-Month system, the floating population here is ten times higher.

The energy consumed every day is an astronomical figure. Most of this energy gap has to be filled by solar facilities, so that the urban planning of the entire city of Guanghan is very compact. In order to leave space for solar facilities, it is almost Reached the pinnacle of minimalist architectural style.

And that's why most countries simply skipped the moon and moved the colony directly to Mars.

The second-generation controllable fusion has always seen no hope. Whether the helium III buried in the lunar soil can be used as a strategic material in the space era has been questioned. If it is only for titanium ore and rare earth resources, the asteroid belt can completely meet The supply of Mars and the Earth-Moon system does not really need to kill the hard bone of the Moon.

After reaching their destination, the group got out of the car.

Looking at the crater in front of him, Lu Zhou nodded with satisfaction.

The terrain is perfect, and the angle facing the earth is also good. The next step is the analysis of the geological composition. As long as the geological structure of the lower lunar soil is not loose and porous, the location of the experimental reactor is not a problem here.

"The conditions here are quite suitable. If you have no problem there, I plan to build the second-generation controlled fusion experimental reactor here."

"To be honest, according to the blueprint I designed that year, if there is no second-generation controllable fusion technology, the 100,000 resident population is almost the limit of Guanghan City. The reason why I circled so many helium three mines was to consider At this point. "

"As a result, to my surprise, I originally thought that these good things would definitely benefit my compatriots a hundred years later. I did not expect that you would not even drink the broth."

After listening to the ridicule of the landing boat, Ye He looked a little awkward and coughed softly.

"This ... I can't decide whether the second-generation controllable fusion technology can be solved. And I have a confusion here, I don't know if it is appropriate to ask."

Lu Zhou said with a smile: "If you don't understand, ask, what's wrong with this?"

Mayor Ye said earnestly: "There is a problem of thermal accumulation in the first-generation controllable fusion. Is there no similar problem in the second-generation controllable fusion? I don't quite understand why you chose to build a fusion power plant on the moon. If there is a long-distance transmission method ... why not build a power station on the earth and then send electricity directly here? "

Lu Zhou: "Thermal accumulation is indeed a problem, but it can be solved for the second-generation controllable fusion. So to speak, because the first-generation controllable fusion will generate additional neutrons, the design idea of ​​the reactor shell is to recover additional Neutrons, such as liquid lithium neutron recovery technology, etc. Although these designs can effectively recover neutrons, they do not solve the problem of overheating the core and occupy at least 70% of the design space. "

"... that is, because the second-generation controllable fusion does not generate additional neutrons, you can omit many redundant designs and leave more design space to solve the problem of thermal accumulation?" With his chin, Ye He nodded his head, "I seem to understand what you mean."

Lu Zhou nodded approvingly.

"Your understanding is high--"

"Oh, don't be fooled by his nonsense!"

Just then, a discordant voice suddenly came from the communication channel.

After hearing this sentence, the group looked subconsciously behind them, and saw an old man in a space suit, striding toward this side with a big stride.

Behind him, there was a young man who followed the old man's footsteps with a wry smile.

Recognizing the young man's identity as his secretary, he did not recognize who the old man was. The mayor Ye frowned slightly, but still said gracefully.

"Excuse me, are you?"

The old man looked at Lu Zhou badly, then looked at Ye He, said displeasedly.

"Qiu Mingrui! You were invited by me, I don't know who I am?"

Hearing the old man's name, Mayor Ye suddenly had a faint expression on his face, and then said with a smile.

"It turned out to be Academician Qiu, disrespectful. But why are you here today?"

Tyumen Rui said with a grin.

"If I come later, you guys shouldn't be fooled by this guy."

It's okay to flicker ...

Do people in the 22nd century know this old stalk?

Looking at the inexplicably hostile old man, Lu Zhou asked curiously.

"What the **** is this?"

"This is Academician Tyumen Rui, an expert at the Institute of Nuclear Physics of the Pan-Asian Academy of Engineering!" Mayor Ye did not hesitate and said with a smile. "We invited the elderly to do a project feasibility assessment. After all, you take such a large plot And there are certain security risks, which are normal procedures. "

"It should be," Lu Zhou nodded, then looked at the poor academician Qiu, thinking for a few seconds, and said, "It seems that you came to stop me. If so, Just go straight to the point. "

I don't know where the anger came from or if he was originally a bad-tempered person.

After hearing the words, the old man in the space suit stared at the landing boat and choked the words aggressively.

"Don't talk about some of them. I will ask you three questions. Do you dare to answer them?"