Although full of curiosity about the instrument, no one answered the question of the sky. After all, what is defense? Such a big proposition is difficult to explain clearly for a while.

Yangkong didn't continue to embarrass these new crescent warriors, and the next moment he said directly: "The real defense is considered by many people to be unbreakable. So what is unbreakable? Isn't it just a metal cover to cover everything? ”

"No, real defense in the pre-civilizations already had a very clear concept, that is, sustainable, without dead spots and blank spaces, closely monitored."

"For this reason, the pre-civilization invented the satellite, and you can understand this concept by reading the books left over from the pre-civilization, and I will not extend it."

"So, a real defense is a pair of eyes that are within the scope of what needs to be defended, can see everything and don't close their eyes."

"On this basis, the concept of defense extension is to make accurate judgments in a timely manner after discovering any abnormal movements, and then make appropriate responses."

Yangkong is by no means disgusted with the desire of teenagers to seek knowledge, in fact, the real powerful people in this era are definitely not simply amazing.

Furthermore, if you don't have an understanding of knowledge as a foundation, you won't become a powerful force, at least you won't be able to cross the threshold of the third order...

I have to say that Yangkong's narration is very precise and moving, and Tang Ling has also deepened his yearning for the power of knowledge to turn decay into magic.

Think about it, right? Such a pair of 'eyes'! This definitely exists, because Tang Ling experienced the night of the corpse.

He knew very well how quickly Security Zone 17 had responded.

So, this large ultra-tech instrument is...

"So, the instrument you see is related to defense, and creating illusions is a side branch of defense. By no means all it does. ”

"It's still those eyes!" Auston was slightly excited, he didn't expect such a thing to exist in Security Zone 17.

Smile in the air.

"It can also make judgments about any situation." Christina's mood was also high.

Still smiling in the sky.

After a moment of silence, he said: "To be complete, it is an 'eye', and it can make the most correct judgment of the situation through precise calculations, and on this basis, it can also create an illusion and produce a shielding effect. Finally, it can also respond with precision, such as precision strikes. A powerful precision strike. ”

"Its full name is the Second Class Fortification Body! It is also called a secondary city moat. ”

Powerful, really powerful makes people desperate.

This was Tang Ling's first reaction, if the No. 17 safe zone had such a thing, and if he had to stand on the opposite side of the No. 17 safe zone one day, would he still have a chance to win by half a point?

The events of that night, the swords of that night, and all the hatred of the 17th safe zone are inseparable.

Even after more than a month, I inexplicably recognized some people in the 17th safe zone.

It is impossible for Tang Ling to forget the hatred.

It's just that the point of view has become that some of the higher-ups in Security Zone 17 have their hands stained with the blood of the lives of the people in the settlement.

What if the instrument was for some higher-ups?

Tang Ling's heart was tumbling with anger and despair, and under the calm on the surface, there was a clenched fist in his trouser pocket.

No matter what, he can only move forward.

Yes, there is also Uncle Su Yao, accompanied.

No one knew that Tang Ling's heart had such a violent emotion at this time, and everyone was just shocked again.

The real world has opened up anyway, and it is much more shocking, so I slowly accepted it.

"This Level 2 Protector is one of the foundations of Security Zone 17."

"Once you know that it exists, you will also know why the battlefield behind this cliff exists."

"You have to know." Seeing that the teenagers were so interested in the second-level city guard, they lost no time in saying two more words.

As soon as these two sentences were spoken, a deep exhaustion arose in Yang Kong's heart, when will this endless battle end? At least now he doesn't see the light of hope.

And how long will it take for the group of teenagers in front of him, who are still full of curiosity about everything, to feel the same fatigue as him?

Trimester? Half?

While pondering in the air, Auston and the others were already excitedly discussing the battlefield, and at this moment, there was a vibration from the iron cage.

It's finally landed.

Is this to the battlefield? Everyone straightened up after the iron cage hit the ground.

The excitement brought by the second-level city guard made them forget about reality for a while.

But after landing, remembering what they had seen on the cliff before, these new crescent warriors quickly remembered reality.

Fighting those giant monsters? Jumping into battle right away? How can we fight? What should I do? You're going to die, right?

This was an inevitable thought, and even Tang Ling couldn't help but be nervous.

The heavy appearance of the instructor is still in front of him, and the so-called two-to-one mortality rate in the first reserve battalion starts now?

Looking at the appearance of these crescent warriors, Yang Kong seemed to feel a little funny.

But in the same way, he didn't open the iron door, but stood solemnly behind the iron gate, in front of the teenagers.

"Now, I'm going to officially introduce myself, I, Yang Kong, the instructor of Introduction to Knowledge of the First Reserve Battalion."

"From the moment I open the iron door, you will learn the first lesson of the First Reserve Camp."

"I'm going to give you the basics of the 'Hope Barrier' and Safe Zone 17. This is what you, as the first reserve battalion, have the title of crescent warrior, must understand. ”

"One hour of lessons."

"So, let's get started now." As he spoke, he stretched out his hand in the air, opened the safety bolt, and pushed open the door of the iron cage at once.

"Ahh

The others couldn't help but be very nervous and stepped back half a point slightly.

Although Tang Ling was standing closest to the door, he also swallowed a mouthful of saliva.

"Huh." Yang Kong couldn't help but laugh, this is a 'burlesque' that happens every year, and the best Crescent Warriors of this year are still the same.

In the laughter, Yang Kong walked out of the iron cage very casually, and then put his hands in the pockets of his uniform, waiting for these newcomers leisurely.

Tang Ling blushed slightly, when did he start to become afraid? He struggled to maintain his composure, and walked out of the cage without waiting for a second.

And when he walked out of the iron cage and saw everything in front of him clearly, he couldn't help but be on the spot.

Except for a small clearing facing the cliff in front of him, the rest of the place was covered with white light, and nothing could be seen.

It's like a covered world.

"Welcome, to the Barrier of Hope." Yang raised a hand in the air and snapped his fingers, and the iron cage behind Tang Ling and the others began to rise slowly.