"Don’t the Scutum spiral arm have 30,000 Zro resource stars? If we occupy a few hundred, don’t we have money?" Niu Dazhi looked at the astronomical trading items on the list and felt that we should occupy a few more. Resource star.

"You should distinguish the statistical quantity and the actual mining quantity." Eve squinted at him, not wanting to explain.

"There are more than 30,000 Zro resource stars, is it not good to mine them all?" Niu Dazhi should mine all the resource stars.

"Too lazy to care about you." Eve turned his head aside.

Han Youwei helped explain: "Actually, there are 30,000 resource stars in the spiral arm of Scutum, which are calculated by sampling statistics.

"In other words, 30,000 resource stars are the result of estimation, just as there are 100 billion to 400 billion stars in the Milky Way, which is also the result of estimation. I don't know how many there are.

"In other words, 30,000 resource stars are hidden in tens of billions of stars. In fact, the Carbon-based Alliance has not found these 30,000 resource stars.

"In addition, there is another issue of mining costs.

"There is a difference between mineable and immediate mining.

"Just like the previous earth, there is a lot of oil under the sea, but it is rarely exploited because of the difficulty and high cost.

"The same goes for resource star mining.

"So after the photosynthetic civilization explores the resource stars, it will classify the minerals of the resource stars.

"The two resource stars of γ670 Scutum, the Zro Star Source Mine is grade C, which is generally suitable for mining.

"According to the information given by the photosynthetic civilization, C-level is suitable for mining, and D-level is low in mining efficiency, but it can also be mined.

"Below level D, judging from the current technology of photosynthetic civilization, there is no mining value for the time being.

"This is still because of the farming development technology of the photosynthetic civilization point. If it is a three-eyed tribe, all C-level mines can be mined, but it is not a type of mining.

"This is why the three-eyed tribe will cooperate with the photosynthetic civilization, because the three-eyed tribe has a very low efficiency in mining C-level mines. If you give it to the photosynthetic civilization, you can get 70% of the income, which is very cost-effective."

Han Youwei said here, sighed, and said: "If it is us, even if it is a grade A mine, we will not be able to mine. Forcibly mining, the cost is too high, and there is no benefit."

"It's too difficult. Buying a battleship is not good, or grabbing resource stars is not good. What should I buy with this loan?" Eve lay weakly in the chair, feeling a cloud of mud in his head.

At this moment.

Yang Yuping’s communication screen popped up on the big screen: “Buying fish is worse than buying fish. Technology is always the primary productive force.

"What mankind lacks now is technology and solutions to make technology practical.

"I have listed 130,000 kinds of technology practical solutions that need targeted purchase.

"These practical technologies are not in the purchase list, so it is best to submit this list to the photosynthetic civilization and the mechanical empire.

"Let them give this practical technology alone and give the purchase price.

"However, according to my estimation, only half of the 130,000 practical technologies listed can have solutions, and less than a quarter of them are suitable for human use.

"Even so, if you can get 30,000 practical technical solutions among them, then the comprehensive level of human science and technology can soar from 1.6 to 1.9."

It seems that the civilization level has been upgraded from level 1.6 to level 1.9, and it does not seem to have improved much.

However, as long as you have a little understanding of the progress of civilization, you can know that it may take 500 years to cross between level 1.6 and level 1.9.

After reaching level 1.9, human beings are only one line away from stellar civilization.

These 130,000 practical technologies involve all aspects of human civilization, from civilian use to military use, from basic production to military manufacturing.

If human beings rely on their own strength to study the 130,000 practical technologies listed by Yang Yuping, even if all human beings work together, it will take hundreds of years.

However, now waving 3 billion Union currency, you can buy it directly from higher civilizations.

This is an opportunity to directly raise the level of civilization, and it is a leap for civilization.

From the perspective of civilization development, this is indeed the best purchase plan.

Fang Yuan opened the 130,000 practical technology list sent by Yang Yuping and browsed it briefly.

The first thing that catches the eye is planetary climate control technology.

"Planetary climate control, what does this mean?" Fang Yuan suddenly didn't understand the meaning of this technology.

"To put it simply, it is through the orbital refractor and shielding device system that affect the planet's climate and make the planet more livable. This practical technology can be used in conjunction with the orbital solar energy collection technology..."

Yang Yuping explained in a language that ordinary people can understand: "In short, these 130,000 practical technologies are all related to the technological development of human civilization, and they are closely related to each other."

"Like the planetary climate control system, we should be able to study this technology ourselves, right?" Fang Yuan felt that this technology was not very difficult.

"Yes, with the current capabilities of human beings, it can indeed be researched. However, if it is to be realized, at least one hundred scientists and thirty engineering ships are needed to work continuously for ten years, and the technology needs continuous improvement. The total amount of funds is very large, but this solution, in higher civilizations, may be as simple as making a box of matches for us.” Yang Yuping explained.

Fang Yuan nodded his understanding.

In the list of 130,000 practical technologies listed by Yang Yuping, the technologies contained in them may not be super-era technologies, but they need manpower, material resources and time to research them out.

If it can be obtained through purchase, it is naturally much simpler.

Moreover, these 130,000 practical technologies are all related to each other.

Moreover, the Carbon-based Alliance cannot solve all of the 130,000 practical technologies, probably only a quarter of them.

Therefore, these practical technologies that need to be solved are like a puzzle towards a stellar civilization.

By buying from the Carbon-based Alliance, you can fill in a quarter of it, and the rest will need to be filled slowly by humans.

After explaining the significance of these 130,000 practical technologies, Yang Yuping added: "However, this purchase plan also has a drawback."

"What's the disadvantage?"

"It can hardly increase the combat power of the space fleet. In other words, this time is an upgrade to the entire civilization, but it cannot only improve the combat effectiveness of the space fleet, nor can it help you relieve the pressure of fighting on distant stars." Yang Yuping said calmly. .

In fact, when Fang Yuan saw this list of practical technologies, he knew that this list could not improve the combat effectiveness of the fleet.

This is a very real problem.

Now there is only 3 billion alliance currency, and there are so many things that can be bought. Either choose to upgrade civilization or choose to upgrade fleet strength.

If you want to upgrade on both sides, the end result is half a bucket of water on either side.

Fang Yuan thought about it for a moment, showing a smile, and said in a flat tone: "It's okay, we can handle this little pressure."