The number of war stars that a civilization can withstand is limited. With such a huge size, the number of machines may reach tens of billions, and a large number of engineers are required to maintain all aspects.

Conventional civilizations usually do not explode infinitely in the population, so that war stars will not be developed infinitely.

In short, after so many years, it is always a good thing that civilization is willing to sell excess planets. Because the other party’s asking price is relatively high, both parties are still bargaining.

Zhang Yuan vomited a breath of turbid air from his chest and looked through the information at hand. The mass of this planet is about the size of the moon and the density is about 8.2 tons/cubic meter. This density is even larger than iron, which means it is completely a large metal lump.

This type of planets has a very good texture, and they are better than ordinary planets in terms of mechanical structure, mineral composition, or strike resistance.

The human scientific expedition team members are still conducting geological investigations.

Of course, a primitive planet alone will definitely not be sold at a particularly good price. There are so many such primitive planets in this starry sky, and no one wants the raw materials!

The key is that hemisphere civilization has been developing here for more than 1,500 years, digging the foundation work of planetary engines, residential areas and industrial areas, but it has not yet been timed to officially start construction.

This is exactly what humans think. If everything is built, people will not want it anymore. Because this planetary fortress is to be the main base of human beings. If other people’s equipment is used, it will always feel very strange and unsafe... So in the end it will be demolished and rebuilt, and the workload will be increased for no reason.

Now that I dug a foundation like this, it is more appropriate.

Because of this, Zhang Yuan was in a very good mood after hearing this news. After get off work, he specially bought a pound of "sweet and sour grass" as the fruit for the banquet.

This is the latest antioxidant food, obtained from other civilizations, and it is said that long-term use can extend human lifespan.

Well, since this type of antioxidant food, like various health products, is too numerous to count, Zhang Yuan doesn’t know whether this type of rumor of “increasing lifespan” is correct.

Anyway, this thing is harmless to the human body, very expensive and delicious!

When I got home, I found my wife Lin Xuanxuan making dinner excitedly. This was a rare thing. Both of them were staff members of the embassy and would stay here for about five years. My usual work was quite busy, and today is their third year...

Zhang Yuan arranged the fruit on the fruit tray, and then smelled the fragrance coming out of the kitchen and screamed a few times.

Lin Xuanxuan's cooking skills are undoubtedly excellent, but she is usually too lazy to cook in person. As for today, of course, there are customers coming to visit!

Smelling the dishes, Zhang Yuan couldn't help it anymore. He slipped into the kitchen, stole a chicken wing, and was beaten hard by his wife.

He felt a little embarrassed: "If you dare to hit me, I will start a massacre today!"

"What are you killing? Don't get in the way here!"

He heard the doorbell again and hurriedly ran to open the door.

There were a group of dusty diplomats standing at the door, all of whom were invited to this banquet, with a total of seven or eight people.

Two scientists have just inspected the planetary fortress provided by hemisphere civilizations.

"Please come in, please come in!" Zhang Yuan greeted with a smile.

Only friends with very good friendships will be invited to such private banquets. Everyone has worked with each other for many years and the atmosphere is quite harmonious.

At six o'clock in the evening, everyone enjoyed the food, chatted and talked about the various alien civilizations near Dyson Ball, which was quite interesting.

"...Some civilizations are very stubborn and will stick to the end if you stick to one thing; some are very strong, and don't want to lose at all during the negotiations, just want to take advantage of it."

"There are also civilizations that are chaotic during negotiations. Before doing business, we will first talk about a bunch of "what did you eat today", "cultivating a precious alien plant", etc., which gives people a feeling of being confused."

"...However, the common point of these level 4 civilizations is that their innate racial value is much higher than ours. I think, in the process of development, they may not suffer more than us."

Several diplomats expressed their views to each other.

"That's not necessarily true, it's just your intuitive feeling. You haven't had a deep understanding of these alien civilizations... We obtained clues of curvature technology by chance. And these civilizations may have been explored slowly in the dark fog. This is a very amazing thing..."

"Being able to become a level 4 civilization has its own superiority, whether it is innate racial values ​​or social systems... Oh, by the way, there are actually some level 4 civilizations that are supported by other civilizations. Their social systems are actually not very good, but their racial values ​​are very high."

"In short, the racial value of our humans must be considered the lower one..."

This racial value refers not only to intelligence, but also to ideology, perception ability, lifespan and other factors. If calculated in this way, Zhang Yuan also feels that the racial value of humans is indeed not very high...

But there is nothing to do about this. Race value is inherent, so it is difficult to change it.

Zhang Yuan laughed dryly: "Low racial value also has the benefits of low racial value, so there is more room for improvement! Our social system is very advanced, and may be more advanced than other civilizations."

But if we can find a way to enter the fifth level civilization, these innate things will become irrelevant...

"And the fourth-level civilization that has been built up?"

"Of course there are, and there are quite a few, which is equivalent to an affiliated civilization. These are the rumor we have heard. What's going on, we can't understand so much civilization in depth."

"What about the Curvature Non-Dispersion Treaty? Is it applicable to affiliated civilizations?"

"I don't know this."

For a while, everyone fell into silence. Judging from the current information, the gap between the fourth-level civilizations is too big! Some civilizations affiliated with civilizations have risen to the fourth-level level.

Zhang Yuan suddenly asked, "Tell me about that battle star... how is the negotiations? Recently, the people's calls for a planetary fortress are getting higher and higher."

In fact, when the government announced this big project, the public's attention has always been high. No matter how many times the polls on the Internet were launched, they were overwhelmingly supported... even if the plan was difficult.

Even a Titan-class spacecraft is still far behind the real planet!
Chapter completed!