After the meeting, Lin Fan took Liang Xue to the scientific research space city in the orbit of Wilass.

The person in charge here is Lin Fan's old acquaintance Bai Zixuan, and after he completed the task on Ed's side, he came to Shanhaiguan with the third batch of transport fleets.

This old man has been thinking about when Lin Fan will be able to secretly hand him a small card or something, but unfortunately after a few years, there is nothing.

This made Bai Zixuan angry, and rushed directly to Lin Fan's office, pointing at Lin Fan's nose and scolding, saying that Lin Fan obviously had such a good talent for scientific research, but he wasted it! And so on.

In the end, Lin Fan, who couldn't laugh or cry, could only promise that after solving the Babawei Empire, he would definitely study various techniques well, and Bai Zixuan let him go.

Lin Fan is also very helpless, who let his system pretend to be dead like this, and this pretending to be dead is twenty years...

If you don't deal with the Babawi Empire, the system won't be able to activate the official version, and you won't be able to get more technology.

I can only hope that this system will be more powerful by then!

After coming to the Scientific Research Space City, Lin Fan directly took Liang Xue to Bai Zixuan's laboratory.

"Bai Lao!"

"Huh? What are you doing here, boy? I'm not here to welcome you as a waste of talent! ”

Seeing that it was Lin Fan, Bai Zixuan sprayed directly!

"Bai Lao, I said last time, before I killed the Babawei Empire, I couldn't concentrate on scientific research at all! Don't worry, after I finish the Babawi Empire, I will definitely concentrate on scientific research! ”

Listening to Lin Fan's words, Bai Zixuan glared at him fiercely a few times, and then let out a long sigh.

"Tell me, what are you doing here?"

"Bai Lao, the first batch of vanguard fleets of the Babawi Empire is already on the way, and it will arrive in about 3 years, although I have developed a perfect technology, but there are still a few things that need your help!"

"Tell me, what do you kid need?"

Bai Zixuan looked at Lin Fan and said angrily.

"I need you to help me design a rail gun, in the form of a turret, with a small thruster that can adjust the angle of fire, the projectile speed requires at least 0.7 times the speed of light, and at the same time requires rapid mass production, I need to deploy at least 10 million guns in three years!"

"Well, why did you kid think of asking for a rail gun?"

"Isn't that a tactical need!"

"Okay, you kid come with me!"

Saying that, Bai Zixuan walked out, but Lin Fan was stunned for a moment.

Is there still a spot that can't be made?

Thinking of this, he immediately took Liang Xue to follow!

Soon, under the leadership of Bai Zixuan, the three of them came to a large warehouse in the space city.

In this warehouse, there are all kinds of equipment, some of which can be seen at a glance as the predecessor of a certain weapon used by the Federation today, and some that Lin Fan can't recognize at all!

"It's all the stuff I've studied before, some of them are better, the old ones are put here, and some of them have been eliminated because of themselves, like the railgun you want."

Lin Zixuan said as he took Lin Fan and Liang Xue to a huge device.

The first thing that catches the eye of this device is that of a battleship's naval guns, but its shape is somewhat strange, there are ten barrels in front, nine of which form a circle, and in the middle of this circle, there is a barrel that is significantly thicker than the other nine.

"Bai Lao, what is this?"

"That's what you want, ten railguns! This was specially designed by me for the Level 4 Civilization Shield, which can fire ten projectiles at the same time, one large and nine small, to ensure that ten projectiles hit a very small area at the same time. And the projectile speed can reach 0.99 times the speed of light, you only need to install a few more attitude control devices that can adjust the attitude, and it can perfectly meet your needs! ”

"Bai Lao, such a good thing, why don't you take it out!"

Lin Fan listened to Bai Zixuan's words, and his eyes lit up, what a good thing!

One shot of this thing can definitely reach the standard of a fourth-level civilization!

"Do you think I'm willing to eat the dust of what I've worked so hard to work on here? Do you think there are still humans who would support railguns? ”

"Uh..."

Lin Fan scratched his head a little embarrassed.

Indeed, no one in the Federation today will support the development of rail cannons at all, after all, this thing has always been said to be used only by low-level civilizations (referring to level 1-3 civilizations), and energy weapons are the mainstream after the fourth-level civilization, and it is also the future development direction!

Therefore, not to mention the Orca-class battleships, even the previous Snow Leopard-class battlecruisers did not have rail-mounted guns!

"Bai Lao, is it convenient for this rail cannon system to be mass-produced?"

"No problem, with the current productivity of the Shanhaiguan Theater, it is trivial to produce 10 million units per year, after all, the technical content of this thing is very low for the current federation! Even many of the current civilian production lines can be used to manufacture them with a single adjustment! ”

"Okay, Liang Xue, you take charge of this matter, arrange for someone to dock with Bai Lao, and get the production line moving as soon as possible!"

"Okay, I got it!"

"By the way, Bai Lao, can I pull this one out and test the power? After all, knowing the power of the geometry, I can better arrange the tactics! ”

Lin Fan stepped forward, stretched out his right hand and touched the pitch-black barrel, then turned his head to Bai Zixuan and asked.

"Okay, I'll arrange a group of people to cooperate with you in the test!"

"Okay, I'm sorry for you, Bai Lao!"

Bai Zixuan glanced at Lin Fan, waved his hand impatiently, and then left the two of them and walked out by himself.

Lin Fan and Liang Xue showed a wry smile.

This white old man is still the same!

The next day, with the support of a technical team sent by Bai Zixuan, the rail gun, which had been in the warehouse for more than ten years, was pulled out again and sent to the test airspace.

And 1 astronomical unit away, there was a killer whale-class battleship on standby, of course, there was no one on board, just simply stopped there and opened the shield!

"Commander, the pre-launch inspection of the rail cannon has been completed, and the test can begin at any time!"

"Okay, let's start now, aim at the target ship for the first round of shooting!"

"It's... The target ship is aimed, the distance is 1AU, and the 3 seconds before the shot counts down.. 2..1..Shoot! ”

Just like a fleet forming an attack formation, the ten projectiles also formed a neat shape, shooting towards the target at 0.99 times the speed of light!

"Commander, the rail cannon has been fired, and it is expected to hit the target in 9 minutes and 52 seconds!"

"Okay, keep monitoring, and after hitting, immediately report the damage to the target ship's energy shield!"

"Yes, Commander!"

After 9 minutes and 52 seconds, ten projectiles hit the target ship with unmistakable accuracy, causing a ripple on its shield!