In the next few days of training, Ling Hai temporarily put down his strength training.

His strength has now grown steadily to more than 860 kilograms of deadlifting, which he quietly measured for himself when no one was around. In today's Kaifeng Battalion, just looking at the value of strength, no one can compare to Ling Hai.

Therefore, Ling Hai decided to shift the focus of training to limb flexibility training and instant reaction training.

Training time is always passing by without notice.

On September 16, all the cadets of Kaifeng Battalion No. 5 gathered again in the playground, and then boarded the military transport vehicles in turn according to the squad order under the command of the instructor.

The two-month training has reached its advanced stage, and today, Ling Hai will go to the front line to participate in the outland internship.

According to the instructor, there are a total of five links in the foreign internship.

The first session is the Outland Apprenticeship, in which students will go outside of the Tyre Shield to see the real battlefield and learn some necessary knowledge.

After departure, the transport vehicle did not directly send the cadets outside the defensive shield, but first sent them to the military high-speed rail station. They will wait for the cadets of the other Kaifeng Battalions to come and assemble before heading to the Outlands together.

There are more than 4,500 mercenary trainees in the first batch of trial training in the Xia Alliance, and in this foreign internship, all mercenary trainees will be divided into three groups to take the high-speed train and go to the front line one after another.

After waiting for about an hour, Ling Hai and the others waited enough for the students of the first high-speed train. After that, the high-speed train carried a total of more than 1,000 students and instructors, speeding over the land at a speed of more than 380 km/h.

During the high-speed train, Ling Hai noticed that the scenery outside the window was gradually desolate, and there were fewer and fewer plants and trees. On the flat and vast expanse, there are countless ruts in armored vehicles.

After Ling Hai saw it, he could vaguely imagine in his mind that there was once a picture of troops all over the mountains rushing to the front line.

Under the repeated crushing of armored vehicles and transport vehicles, this land has become so desolate.

More than an hour later, a gray "giant wall" as high as 1,000 feet stood in front of the high-speed rail, and at this time, the speed of the high-speed rail gradually slowed down. After the high-speed train came to a complete stop, Ling Hai heard the faint sound of military drills outside.

Under the guidance of the instructor, the students left the station in an orderly manner.

"Wow! Is this the real Thiel Shield? I finally saw it in reality! ”

"It's incredible, how the hell is this built?!"

As soon as everyone got out of the high-speed rail station, they all raised their heads in unison, and looked up at the "giant wall" in the sky while marveling and sighing.

Looking at the "giant wall" up close, it gives people a sense of towering and majestic! There is no boundary between the left and right sides of the "giant wall", just like the sea level of the sea, giving the impression of an infinite extension to the sky.

The first time he saw the Tyre defensive shield in reality, Ling Hai was also shocked at this moment.

Is this "barrier" that has guarded the safety of mankind for a hundred years really built by human beings themselves? Ling Hai couldn't help but have such a question at this time.

Don't blame Ling Hai, it's really the real thing in front of you is too shocking, such a powerful work can be called a miracle!

In the midst of continuous exclamations, the cadets began to run and march to the barracks.

"I am Lu Zhengping, commander of the 121st Brigade of the 41st Group Army in the Southern Theater, and I would like to welcome you first. Next, I got straight to the point. From this day forward, all mercenaries present will complete their final training and final assessment in the Outlands. This camp is your temporary base of stay. Tomorrow morning at 6 a.m., you will step out of your defenses and see for yourself the battlefield where humans and aliens are battling. The specific content and arrangement of the training are determined by your instructors. The only thing I want to emphasize here is this: what you do in the frontline camps may affect the lives of hundreds of millions of people in the defensive cover, so never do anything that is not allowed. If a student is found to have violated the camp rules, he may be sentenced to a heavy sentence. In serious cases, they may even be sentenced to death and shot on the spot. Therefore, I ask you to understand: camp rules first, training second. Okay, then you will go to the conference hall in groups of 800 people to receive the camp education, and after receiving the education, you will obey the arrangements of your respective instructors. ”

After all the mercenary cadets arrived at the barracks, Brigadier Commander Lu Zhengping said this from the high platform of the playground.

After listening to the speeches, more than 4,500 students walked into the conference hall in turn to receive camp education.

Ling Hai and the members of Class 5 entered as the third batch. When they were seated, the instructor on the podium turned on the projector and began to explain.

During the 45-minute explanation, Ling Hai learned a lot. He knew which prohibitions could never be triggered, and he also knew the true "face" of the Tyre Shield.

Ling Hai's previous knowledge of the Thiel Shield was limited to news and film and television works. What was the true composition of the Thiel Shield, the previous Ling Hai was not clear.

It wasn't until after entering the camp that Ling Hai learned that although the Tyre defensive shield was called a "hood", in fact, the defensive shield was not completely hemispherical, covering the territory of the alliance like a bowl.

The real Tyre Defensive Shield is more like an arc-shaped barrier with the bottom cut off, and the sky above the defensive shield is still the same as before, covered with blue sky and white clouds.

The projection screen of the projector shows that the main body of the Thiel defense cover is composed of a thousand-foot high source column and a metal mesh.

The thousand-foot-tall source pillar, which is 400 meters long and wide, is filled with reactors and sophisticated equipment that provide the energy of the defensive shield.

The distance between each pillar is almost the same, about five kilometers, and in this five-kilometer-long space, it is covered with continuous metal mesh, like a fence.

The projected PPT also introduced that there are two defense mechanisms of the Thiel defense cover, but it is divided into three layers.

The first layer is called the Repulsion Layer, and it is also the outermost layer of the Defensive Shield. This layer is used to cushion the powerful impact of alien creatures and can be simply understood as a wall of air.

However, there is still a difference between the repulsion layer and the air wall that can completely block the enemy in film and television works. The difference is that in the repulsion layer, humans and animals can move inside, but because of the influence of repulsion, no action can be accelerated. Rushing in from the outside, the faster the object will encounter greater repulsion.

For example, when a sports car with a speed of 300 mph rushes from the outside of the hood to the repulsion layer, when the two come into contact, the sports car will be destroyed in an instant due to the violent rebound force. On the other hand, if a person walks slowly at a walking pace, he or she will be able to pass through the repulsion layer with a total length of 50 meters unscathed.

The second layer of the Thiel shield is called the high-voltage current layer, which is also the middle layer of the shield. The layer is made of solid metal mesh, with a total length of 300 meters, of which the metal mesh is only a few tens of centimeters thick, and the high-voltage current layer is mainly composed of gray thunderclouds on both sides of the metal mesh.

If the repulsion layer is the speed limit, then the current layer is the kill. When the alien creatures are confined to the mesosphere slowly, if the alien creatures continue to advance, they will undoubtedly be killed by the high-voltage galactah.

The third remaining layer is the innermost layer of the Tyre Shield. This layer, like the first layer, is also a repulsion layer. In fact, the third layer and the first layer are identical in terms of composition. However, as the innermost repulsion layer, it is mainly used to prevent the air power of alien creatures from flying into the defense shield from a high altitude and destroying the defense shield from the inside. To put it simply, the third layer of defense is inward.

Because the air power of alien creatures is only like that of Winged Demons, and the number of Winged Demons is relatively small, there are not many opportunities for the third layer to actually play a role.