"Sir, do you want to hear how much Blue Moon Coin equivalent resources are needed for the second line of defense?"

"Don't, let's talk about this later......"

Zhao Yu only felt powerless for a while, the first line of defense requires 10.9 billion Blue Moon Coin resources, and the second line of defense needs absolutely more, after all, the orbit range is larger.

Uncle Da nodded, and continued: "Sir, our moon base needs to be expanded, all kinds of warships, and the production lines required for the two lines of defense ......"

"Just say the price!"

"About 5 billion Blue Moon Coins equivalent resources are needed, this is just the production line, once it is built, we will be able to explode a large number of troops in a short period of time......"

Okay, 5 billion Blue Moon Coin equivalent resources, or just a production line, don't you need money to explode soldiers?

The U-shaped battleship alone will cost 15,000 Blue Moon Coins, and 10,000 will cost 150 million, not counting other types of warships.

Zhao Yu suddenly felt a headache and said, "Uncle Da, how is the development of the Mercury and Venus projects going?" ”

Uncle Da shook his head and said: "Before the third-generation nuclear fusion reactor was upgraded, the project was almost suspended, after all, at the current rate, it would take several months for the nearest Mercury to go back and forth, and we can't wait that long......"

Seeing that Zhao Yu seemed to have been hit, Uncle Da continued: "Sir, don't be so pessimistic, although the resources of our moon are not as rich as the earth, only one-tenth of theirs, but in the calculation, the daily mining volume is also a lot......"

"How much can be mined per day?" Zhao Yu hurriedly asked.

"About 10,000 Blue Moon Coins equivalent to resource ......"

"That's too little, isn't it?!" Compared with the tens of billions of resources he lacks, it is too far behind.

"Our moon is extremely rich in iron, copper, sodium, silicon, helium-3, titanium, potassium, etc., if all of them are converted into Blue Moon Coins, we can mine about 100 million equivalent resources of Blue Moon Coin a day......"

Uncle Da shook his head and said: "But most products require more than these resources, so it is useless to mine these excess resources, so they can only be left empty......"

Zhao Yu can understand this, every scientific and technological product needs a wide variety of resources, not just iron can be made, what they lack is those rare metals and rare earths, many of which are not available on the moon, but are available on the earth.

"To take the simplest example, a projection touch watch, the process required to make it is up to millions of ......"

"Just one of the processes of optical sensors, and many semiconductor materials such as Ge, PbS, and CdS are required to ...... the electromotive force phenomenon generated by the photogenerated volt effect."

"Many of the elements needed in the process of refining these semiconductor materials are few or even not available on our moon, and they need to be imported from ......the earth."

"I got it!!"

Zhao Yu rubbed his temples, only felt as if he owed a bunch of debts inexplicably, he had known that he would not let Uncle Da use the Blue Moon Coin to quantify how much resources he needed, how good it would be to be an idle commander.

After a little relief, Zhao Yu recovered and said: "The most important thing now is to upgrade the third-generation nuclear fusion reactor, there are still 7,500 points left in terms of science and technology, you make a list to see which unimportant technology products can be traded with the earth......"

The third-generation nuclear fusion reactor requires 10,000 technology points to upgrade, and once it is upgraded, it can speed up the spaceship and warship, and when the time comes, he may be able to go to other planets for development, and his pressure will be less.

But now, Zhao Yu thought about it, and he still had to trade a lot with the earth to obtain resources.

"Originally, I didn't want to go to Earth for a short time, but now I think I still have to make a trip......"

He wants to speed up the production line and sell the three major products as soon as possible, so that the lunar base can develop rapidly.

"Sir, two lines of defense, just a defensive system, the best defense, in fact, is an offense, I still have a list of offensive troops here, do you want to take a look?"

"Let's talk about it!"

Uncle Da released the three-dimensional image again.

"According to my simulation, the speed of the alien fleet should be faster than our warships, and at this time, a weapon like the Star Destroyer Cannon to hit fixed targets is not very suitable......"

The speed of the Star Destroyer Cannon is average, and it is easy to be discovered by the enemy and avoid it early.

"After our two lines of defense are established, it will be difficult for the enemy to attack our base camp with weapons similar to the Star Destroyer......"

"At this time, if they want to invade, they must clear the base points on our two lines of defense, and if we want to destroy them, we must also destroy their fleet......"

"Eventually, it will inevitably turn into a confrontation between the warships of the two sides......"

"Can the cardinal points be cleared?!" Zhao Yu was stunned, he also thought that once the defense system was built, it would be invincible if the level of science and technology did not exceed too much.

"Of course, the energy stored in each base point is limited, as long as the enemy looks at the base point of an area and attacks wildly, the energy of that base point will be consumed......"

"So, the defense line is not safe, and there is a possibility that an alien ship will break in?"

"That's right, at this time, space battleships are needed to fill the gap, repel enemy ships, and repair base point ......"

After listening to Uncle Da's description, Zhao Yu scratched his head, "So, our war with the alien fleet is still a tug-of-war of attrition?!" ”

"Not necessarily!"

"Two possibilities ......"

"First, as mentioned above, the technological level of the alien fleet is not much different from ours, and it is not much stronger, so that the two sides have room to maneuver......"

"Second, the technology level of the alien fleet far surpasses ours, and at that time, we will be destroyed in a devastating manner......"

Zhao Yu nodded, just like he thought before, when he encountered the second possibility, he would just wait for death, and maybe people would be able to use the technology in the novel to reduce the dimensionality, such as what kind of two-way foil.

"We can only prepare for war based on the possibility that the alien fleet is not much different from us......"

"At that time, we will need to build 12 military bases behind each line of defense, and deploy a large number of mobile troops to support any base point that is attacked at any time......"

The 12 bases, just evenly spaced, will be covered by a spherical line of defense centered on the Earth.

"How many warships do you need for a military base?"

"At least one mothership, a hundred reconnaissance ships, a thousand frigates, ten thousand destroyers, a hundred cruisers, ten battleships, a hundred transport ships and a hundred supply ships......"

Zhao Yu picked his fingers and counted.

A destroyer, without weapons, needs 10,000 Blue Moon Coins, a base needs 100 million Blue Moon Coins, and 12 bases are 1.2 billion Blue Moon Coins.

Counting other types of warships, I am afraid that the total price will not be 10 billion.

"These are the armed forces that need to be permanently stationed at military bases, and in addition to this, there must be a main attacking force that can leave the line of defense and take the initiative to attack......

"How much do you need for the main attack force?"

"It's not decided yet, we need to wait for the third generation of nuclear fusion reactors to be successfully upgraded, and see how fast the spacecraft will be ......."

"Otherwise, the speed is not as good as others, and after going out, it will also be a live target......"

"Of course, if the speed is not as fast as the enemy, we can work on the concealment side, and then the main attacking force may have to choose a smaller battleship......

Zhao Yu scratched his head and said, "Then can my space fighters use it?" ”

"Yes!"

Uncle Da nodded and said: "The smaller the battleship equipped with the stealth system, the better the effect, if it is inferior to the enemy in terms of speed, then it can completely allow the space combat soldiers to carry a small battleship to approach the enemy fleet......"

"Can the weapons on their bodies break through the armor of other warships?"

"These can all be adjusted, space combat robots, we have a variety of models, which can be adapted to the situation of enemy warships......"

Zhao Yu shook his head, it was useless to think so much now, after all, after all, after waiting for the alien fleet to come, he could collect enough information before he could proceed to the next step.

After Uncle Da said it, Zhao Yu discovered that he wanted to build a decent line of defense before the arrival of the alien fleet, and at least more than 20 billion Blue Moon Coins equivalent resources were needed.

Therefore, nowadays, there are two most important things, one is to take out unimportant scientific and technological products, trade with the earth, and recycle scientific and technological points, and the other is to expand the production of the three major products as soon as possible, and trade a large number of resources from the earth.