Ten days have passed since the completion of the disk-shaped spaceship, and Zhao Yu has finally saved up enough technology points to build the U-shaped spaceship.
The resources consumed by a bare spaceship were only three times more than that of a disk-shaped spaceship. However, the resource cost increases dramatically after adding weapons.
Especially for the two U-shaped spaceships that were equipped with the star destroyer cannon, the resources required to make one can make fifteen disk-shaped spaceship.
After seeing the actual U-shaped spaceship, Zhao Yu felt that it was worth spending so many resources.
"The U-shaped nuclear-powered spaceship is 158 meters high and 3180 meters long, using second-generation nuclear fusion technology..."
"When fully fueled, it can fly for ten years without needing to return..."
"Except for the tail of the spaceship, weapons can be added to any part of the ship..."
After giving a brief introduction, Uncle Da said, "Commander, the disk-shaped spaceship is more suitable as an internal reconnaissance spaceship, while the he U-shaped spaceship is more suitable for use as a combat spaceship…"
"According to the complete conception of cosmic combat formations, there should also be motherships, escort ships, scout ships, transport ships, supply ships, and so on..."
"Please give me a list of the types and functions of the battleships needed for the formation. I'll go look for them." Zhao Yu said.
The exchange list did not indicate what an escort ship or a transport ship was, so Zhao Yu had to define them himself.
The disk-shaped spaceship and the U-shaped spaceship are just one of the most expensive spaceships he had found so far.
"Mother ship: Minimal requirements for speed, weapons, or armor, but size is essential to carry all defense facilities, space fighters, small warships, or humanoid mechas that can provide support in space battles.
" Scout ship: Small size, fast flight speed, sensitive response, and stealth function, used for reconnaissance and surveillance."
"Escort Ship: No requirement for body size, but medium is sufficient. The equipment is primarily defensive in nature and can be equipped with a large number of short-range defense weapons."
" Destroyer: The body size should be at least at the level of the U-shaped spaceship, used for conventional combat, and ideally able to carry a large number of densely packed weapons, with sufficient armor."
" Cruiser: A warship that can carry large weapons. For now, the well-suited U-shaped spaceship is the most appropriate choice."
" Battleship: A warship that can carry advanced weapons."
"Transport ship: Requires a large cargo capacity and size is essential."
"Supply ship: Small in size, with a certain speed and flexibility to quickly reach the edge of the battlefield and supply frontline troops."
"Our knowledge and experience in space warfare is seriously lacking, and all the designs of our warships are solely based on data obtained from Earth."
"So, if I understand you correctly, an aliens fleet will be arriving in two months. My idea is that before that fleet arrives, we should at least form a complete space combat formation."
Zhao Yu was feeling overwhelmed. The thing he needed most right now was technology points, but he hadn't even managed to build many of the production lines yet.
To make matters worse, the space research institute was only at level one, which meant that all of the spaceships available for exchange were also only at level one.
Currently, there were only three ways to obtain technology points.
One way was to wait for natural growth, which would yield a maximum of 1,500 technology points in two months.
Another way to obtain technology points was to use the "Mysterious Merchant" title and trade feedback, with a theoretical limit of over 30,000. As new production lines were established, the variety of available trades would increase, leading to an increase in the upper limit of technology points.
The third way was to complete occasional missions released by the system, which could provide a significant number of technology points.
In the short term, trading with Earth was the best option for gaining a large number of technology points.
Alternatively, he could choose to keep a low profile and hope that the alien fleet arriving in two months would be friendly and open to trade with them. However, this possibility was not very high. According to the system's consistent argument, the entire universe was extremely harsh, and most civilizations followed the Dark Forest Law, which meant that they would often fight each other to death over resources or power.
"Earth's average technology level is 0.75. It's not a threat to us. Moreover, it has some connection with you, Commander…"
After a moment of hesitation, Uncle Da said, "I don't want to admit it, but it seems that Earth can't be destroyed yet. Trading with them will allow us to develop and strengthen quickly. This also means that our current defense system is not good enough."
Previously, Zhao Yu didn't know that he was on the far side of the moon. All the defense facilities were built around the base.
Now that he knew where he was, he wanted to protect Earth as well. At the very least, he had to ensure that Earth would not be destroyed when the alien fleet arrived in two months.
"I understand," Zhao Yu nodded slightly and said, "Please list out some of the outdated technology products."
It was time to prioritize large-scale trading with Earth. The only thing they were missing was the right timing.
..
"What's the probability that asteroid KADP-45788 will hit Earth now? "
"99.99%"
"It's almost certain that in six hours, this asteroid will hit Earth…"
"How is the doomsday plan going? How many elites and talents have evacuate to the underground shelter?"
"The evacuation is almost complete. There are still a few people who are unwilling to be separated from their families."
"Is the military really out of ideas?" Chief Engineer Yang asked.
"We have a lot of plans to stop asteroids from hitting Earth, like using nuclear explosions or multiple spacecraft to change the asteroid's path, but they've all been rejected," Colonel Chu explained, his tone heavy with defeat.
"This asteroid is too big, over 50 kilometers in diameter. Our defense plan can only handle asteroids up to 300 meters in diameter."
Chief Engineer Yang wondered and said, "Is this a sign of the end of the world?"
The asteroid that wiped out the dinosaurs millions of years ago was only 10 kilometers in diameter, but for humans, a 50-kilometer asteroid could mean the end of everything.
Only a miracle could prevent the destruction of Earth.
Chief Engineer Yang suddenly thought of something and quickly said," Is it possible for the aliens to help us? "
"Impossible, don't even think about it!"
Colonel Chu smiled bitterly, " Ever since Thomas insulted the aliens, they stopped answering our calls. "
"Could we try contacting them using satellites?"
"We already tried that, I have sent 30 moon satellites to the moon, but they captured over 10 of our moon satellites that landed and didn't respond."
Chief Engineer Yang sighed and said, "We have really blocked all our escape route"
Feeling helpless, Chief Engineer Yang turned to Liu Ning, "Liu Ning, you should go to the shelter while it's still open. "
Liu Ning hesitated to stay, but she knew she had to go to be with her family.
Just as she was about to say goodbye, her watch suddenly flashed.
Liu Ning exclaimed, "It's Zhang Yi Xia! We might be saved!"