Looking at Ouyang Feng, the blue eyed old man nodded and said:

"this is no problem. In fact, we have brought things here. Just refit your defense fortress, and the two men I brought can easily complete it!"

"But..."

Speaking of this, the blue eyed old man suddenly changed his words:

"in fact, this is not as useful as you think. It has a serious disadvantage - it can't be used with the energy shield at the same time! In other words, in the state of stealth, this defensive fortress can't open the energy shield! "

"Because it is actually transforming the energy shield to make itself disappear through space refraction, and it can basically avoid all radar systems, so either turn on the energy shield or turn on the stealth system! You'll have it by yourself then! "

Ouyang Feng was stunned when he heard this, but then he thought that it would not be a loss to install it anyway. It was not up to them to decide which one to turn on at that time, as long as its installation would not damage the shield system of the defensive fortress! Fortunately, these two systems can coexist. If only one can be installed, Ouyang wind will be in pain! Because in fact, this stealth system works only when the enemy doesn't know his position. If the stealth system is turned on in front of the enemy's eyes, they don't care where you go, they just fire at your position.

Although the eyes and radar can not see, but the attack will not fail, so the stealth system, it is not perfect!!

"This system doesn't affect the strength of the energy shield, does it?"

Ouyang Feng for the sake of safety, once again confirmed!

"No!"

The blue eyed old man affirmed:

"it just can't be turned on at the same time. It won't have any effect on the energy shield!"

"How long does it take to install this?"

Ouyang Feng asked again.

The blue eyed old man hesitated for a moment, then said:

"well I'm not sure for the moment, because there should be space attribute in your defense fortress, so we need to have a look first, but generally speaking, one month is enough! "

"Good! Then get this done first! Then we'll go to the next floor! " Ouyang Feng thought about it for a moment. One month is not much time. They can wait. Anyway, it took at least one month for them to pass through the first floor. They even used nearly a year to pass through the first floor. The Kali people have only stayed for four days, and they can afford to wait.

And this stealth system should be done here. Now it's still the layer where the Kali people act as guards. Once they need something else, they can be sent back to get it. Once they leave, it's impossible to come back!

"All right! Then I'll go and inform them! "

The blue eyed old man nodded and then left his room with Ouyang Feng.

After walking out of the room, Ouyang Feng threw a communicator to the blue eyed old man, and then said:

"you don't have any restrictions here. You can go to the whole defensive fortress! You can familiarize yourself with the environment first and study how to install stealth system by the way. If you have anything, please contact me at any time! "

"Well! Thank you

The blue eyed old man nodded, then walked to the room with the red and blue helmets next door, while Ouyang Feng moved to the central control hall directly. At this time, Duan Lei had come back, because Shen Yishan was always responsible for arranging people to live.

Ouyangfeng first told Duan Lei about the stealth system. Duan Lei knew that of course he would not object to it. Although the system has some defects, it can't be wrong to install it first to add one more function to their defense fortress!

After Ouyang Feng entered the central control hall, they came in. Before they entered the defensive fortress, they stayed with Ouyang Feng as before, but other people didn't know their existence except Ouyang Feng. It has to be said that the stealth skills of the three small schools are really strong. If Ouyang Feng didn't have a soul connection with them, he would not have found his existence. This soul connection is Ouyang Sha's ability, which was used to track the target before. Later, when the ancient road was separated, Ouyang Sha directly established a soul connection with Ouyang Feng.

This kind of soul connection is permanent. As long as Ouyang Feng and Sanxiao enter a certain range, they will know each other's existence. Originally, Ouyang Mie intended to search for Ouyang Feng after they arrived at the primitive star.

As a result, Ouyang Feng didn't stay long in the primordial star at all. Because he destroyed all the ghosts of the universe on the primordial star, he left the primordial star. Naturally, they couldn't find Ouyang Feng!

After listening to Ou Yangfeng's words, Duan Lei nodded gently and then said:

"let's stay here for a while and just let those people go out to have a good time. At least for the moment, it seems that we are only on this floor and can have a long holiday!"In the past, although Ouyang Feng and his family had defeated the race on that floor, it did not mean that the endless tower on that floor was really safe, so the ordinary people in the defensive fortress still had to stay inside and could not appear outside.

On the other hand, the Kali side is basically safe, because even Duan Lei can't imagine that they have any reason to threaten the security of the Terran after paying such a high price.

Of course, some Kali who have become zombies will come here because of the negligence of other Kali, but for them from Atlantis, zombies are their most familiar enemy!!

After seeing that Ouyang Feng agreed to his words, Duan Lei looked at the three little killers behind Ouyang Feng, nodded with a smile and said:

"three little guys! Long time no see! Welcome back! " Because Duan Lei used to call them as three children when they saw the killing of the third primary school. Later, although they knew their real identity, they were used to calling them, and the third primary school didn't contact with other people, so Duan Lei thought about it and thought it was better to use this name!

After hearing Duan Lei's words, Sanxiao looks at Duan Lei, and there seems to be a trace of warmth in his eyes, because this name is what Duan Lei called them when they just met Duan Lei at Heilong bridge.

However, despite this, the three small also just slightly nodded, still did not speak, Duan Lei also know their character, these three people can give their own response, nodded to themselves, has been quite good!

"Then you take them to get familiar with this place, and I'll arrange for people to go out in batches to get some air." Duan Lei said and walked out of the central control hall. Although there is a large space in the defensive fortress, and the air is not dirty, it is a closed space after all, which can't be compared with the outside world. Although there is no sun in the endless tower, it's good to see the sky outside.

especially for ordinary people who have no chance to step out of the defensive fortress Say.

This time, ouyangfeng stayed in the Kali tribe for nearly 40 days. Because of the law of space, there were some small problems in the installation of the stealth system, but it was successfully installed in the defensive fortress in the end!

On this day, Lu Feng, Tang Haotian and others were all in the Yanhuang, looking at the defensive fortress below, because today is the time for them to test whether the stealth system works!

"Leizi! You can start when you are ready! "

Ouyang Feng said in Yanhuang.

"Good! Activate the stealth system

With Duan Lei's voice, Ouyang Feng was surprised to see that the huge defensive fortress below was slowly fading away. Within three seconds, the artifact disappeared

"Damn it! Really? "

Mars was so surprised that he looked at Yanhuang's radar system and found that it was in the radar system, which did not show the existence of defensive fortress.

"It does look good!"

Ouyang Feng nodded with satisfaction and said:

"in this way, we will have an extra card!"

"Unfortunately In the stealth state, most of the functions of the defensive fortress should be turned off, otherwise it is possible to be found! "

The blue eyed old man was also on the Yanhuang at this time. He stood behind Ouyang Feng and sighed softly:

"we have been unable to eliminate this drawback. Therefore, this function is estimated to be used in front of fighting races. It is a bit dangerous when encountering technology races. After all, at this time, the defense fortress has lost the protection of energy shield."

"Moreover, because the stealth system will occupy part of the resources of the shield system, in case of emergency, if you want to turn on the shield immediately, you have to turn off the stealth system first, and then start the energy shield. In the middle, it takes about a minute and a half." Ou Yangfeng nodded gently. If there is a critical situation, not to mention a minute and a half, a second is too long. Therefore, this invisible system, as the blue eyed old man said, can only be used once

twice in front of the combat type race with very low technology!

Chris, they have studied this stealth system before, but they have no clue, but it doesn't matter. They have only taken one tenth of the endless road now, and there is plenty of time for them to study later!!

"Leizi! Can you hear me? "

Ouyang Feng said to the communicator.

"Yes!" Duan Lei's voice came, but just as he spoke, a red light on the radar screen of Yanhuang suddenly flickered a few times, and then went out again

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