The number of attacks in this wave is limited, and it is not even as good as the attacks encountered by Lin Xi and Chu Jungui in the last two rounds, which can not be called a beast tide at all, but can only be said to be a herd of beasts. This kind of attack is basically to send materials.

Since it was decided to build a defensive fortress on Horizon 2 and fight the Federation Lancers here, Lin Xi calmed down and carefully designed a defense system.

The educational literacy of Zhige Academy was fully reflected at this moment, and Lin Xi finally came up with the design drawing, and even the test subjects couldn't find anything that could be improved.

Lin Xi's design is a combination of a ground fortress and a mobile fortress, and the mobile fortress is also divided into two parts. In addition to the mobile fortress that mainly carries supplies and production, she plans to build a militarized mobile base that focuses on firepower. This mobile base is equipped with four sets of main tanks, and it exists entirely as a mobile fire strike point.

In terms of ground bases, Lin Xi took Roland's design drawings as the core to massively manufacture one-square-meter standard armor plates. These armor plates can be mounted directly on standardized ground-based modules, and with the addition of fixed support components, the defense capability is basically equivalent to that of the main battle vehicle.

With the wreckage of the vehicle as a material supply, and a constant supply of double-leaf wood, the armor plates were manufactured at a considerable rate. The outer outline of the fortress soon took shape, and a low wall rose from the ground one meter high.

Relying on the low wall, Lin Xi built a single soldier position, which was scattered.

The front wall of the fortress is only two meters high, made of two standard armor blocks, and the back gradually sinks along the terrain. The production base was placed in an area 100 meters away from the defense line to avoid being affected by the fighting.

Four of the six tank guns were mounted on mobile fire bases, and the other two were installed in the front line as direct strike fire. Such a system, coupled with three sets of dual-mounted mechanical keyboards, is still difficult to reassure Lin Xi. In order to ensure the advantage of firepower, she put the chip into the research and development of the third-generation mechanical keyboard.

Chu Jungui is not very satisfied with the second-generation mechanical keyboard, and is also letting the chip modify the design according to its own characteristics.

In this way, in the tense and orderly construction, the design plans of the two people were released one after another. They called the colonel over and worked on the blueprints together.

Despite his experience, Roland struggled to comment on these two plans.

Lin Xi's third-generation mechanical keyboard is still a double-pack design, but the caliber jumps to 50mm, and the power more than doubles. In addition, two types of ammunition have been added to the ammunition: airburst and rocket range extender. In the case of launching a rocket extender projectile, the range is more than 10 km.

The colonel had seen Chu Jungui's archery technique, and he knew very well that when this thing was in Chu Jungui's hands, the range was more than 10 kilometers. It's just that no matter how long the range is, it will require observation and calibration equipment.

The firepower of the third-generation mechanical keyboard is quite strong, and the power of a single shot far exceeds that of the 155 guns common in the era of the home planet, and the rate of fire reaches 120 rounds per minute.

Regardless of the type of ammunition, the charge is 200 grams. Although biomass explosives are far less powerful than military high-energy explosives, they are still roughly ten times more powerful than the TNT used as standard for everything in the home planet. This one is 2 kilograms of TNT.

Lin Xi's confidence in this design is on the ten Xenomorph versions of organic matter separators that are continuously produced. She now has two tons of biomass explosives in her hands, and she's adding them at a rate of 100 kilograms per hour.

Chu Jungui's design is a different set of ideas.

He redesigned the original sniper rifle from its original sniper rifle, and its ammunition was based on the longest and hardest spines of the spinyback, which could only produce two or three of these spines per spiny. The length of the new gun is close to two meters, and the armor penetration of bullets against standard armor plates is more than 1000mm, and if you count it as ordinary homogeneous steel, it is close to 1500mm.

In other words, as long as it is a planetary-level vehicle, no matter what, even the main combat vehicle can be pierced with one shot. After all, planetary vehicles emphasize survivability in harsh environments, and are not known for defense.

Lin Xi's design is also forgotten, Chu Jungui's gun is really incomprehensible to the colonel.

He looked at the blueprints repeatedly, silently calculated the parameters, and finally said, "The recoil of this gun can shock people to death, right?"

"No, it won't. Chu Jungui said with certainty.

Lin Xi glanced at him and said, "Don't pay attention to him, it's his special gun, and others can't use it." Let's start with the guns I designed, just five. In addition, you design a base for mounting a mechanical keyboard, which should be light and easy to use. ”

"This ...... Is it a gun?" said the colonel inwardly, he had never seen a 50mm gun. Of course, he wouldn't really say it.

"With this bit of power, it's naturally a gun. "After all, Lin Xi is the first place in Zhige Academy, and he has seen the world. Among the students' design works, there are many things that are crazier than mechanical keyboards.

Thinking of this, Lin Xi suddenly found that in the annual Zhige College Design Competition, it seems that many of the ideas of the entries can be used as a reference. This treasure trove has really not been taken seriously before.

With the firepower coverage of the dual version of the mechanical keyboard, coupled with Chu Jungui's accurate sniping, the colonel even felt that the two young agents were a little too strong.

Isn't it just a few dozen chariots, and as for that? Can't people fight back? What kind of battle is it called if you don't fight back, it's a massacre.

No matter what the colonel thinks, the work must be done. It's just that the battle that has just wiped out the alien beast herd, and the latest firepower design plan, makes him understand that as long as the chariots sent by the Shadow Fortress are less than a hundred, it will be a one-sided slaughter.

He suddenly remembered that the Lancers were also a well-known unit in the Federation, so why did he suddenly feel so weak?

Roland broke out in a cold sweat.

The lancers are still the same lancers, never weak. The real reason for the two fiascos was that these two excessively young agents were too strong.

The systematic blueprints based on the native raw materials of Planet Four make their firepower unprecedentedly powerful, exceeding all calculations. Lin Xi's marksmanship is amazing, and he has a higher talent in command, from the base design to the combat configuration, he is impeccable, and he can't find a weak point in tactics.

For example, from the design of the double-mounted mechanical keyboard to the arrangement of cross-fire gun emplacements, to the tactics of fire coverage, the chariot unit led by the second rose can almost be said to be defeated by Lin Xi alone. Although Lin Xi is young, he has already shown the quality of those famous players that Roland has seen.

However, in contrast, that man is as deep as the abyss, and he has never been seen through.

It seems that Chu Jungui is inconspicuous in everything he does, except for the guns he is holding are bigger than the other, it seems that he has done nothing. Oh, he's just shooting accurately.

The colonel began to recall the details, only to find out that in all his memories, Chu Jungui had not missed a single shot.

It's not human!

The colonel subconsciously shuddered.

Out of the corner of his eye, he caught a glimpse of a soldier standing beside a pile of materials in a daze, and suddenly he became furious, rushed over and kicked the soldier to the ground, roaring, "What a daze!