Xu Chen returned to the secret room arranged by Yi Xiaoxiang, and immediately ordered Tianhuo to watch the door outside, prevent anyone from approaching, and then sink his consciousness into the sea of consciousness.

As soon as his consciousness entered the system, he felt a wave of dizziness, and then was forcibly pulled into a space.

The very familiar quaint hall, in front of him, there is a two-meter-long, one-meter-wide light screen, on which these pictures are displayed.

Just when Xu Chen was extremely puzzled in his heart, a crisp voice sounded in his ears: "Welcome! Dear player Xu Chen, can I help you with anything?"

Hearing this voice, Xu Chen was immediately startled, because this was different from the previous sound that was just a ding, but a real human voice, and with the sound of this voice, a little elf with wings on his back and a transparent body appeared in front of him.

"Who are you, and why are you in the system?"

The moment Xu Chen saw this elf, he immediately took a step back, he had the system for so long, it was the first time he had seen this elf, of course he was a little uncomfortable.

The elf flapped his wings, circled around Xu Chen, and said very happily: "I? Hehe! I'm the system elf! How about it? Am I beautiful?"

Seeing that the elf seemed to be wandering around in front of him, Xu Chen began to look at her, her facial features were exquisite, she was about one meter tall, her whole body was transparent, and her body was dotted with a trace of bright blue light, which was as dazzling as a diamond, and it was indeed very beautiful.

"You're, how did you get out?"

Xu Chen cleared his throat. Asked with some hesitation, he vaguely felt that the sudden appearance of the system elf might be related to the upgrade after the system was fused too illusory.

"Hee-hee! I guessed it right at once, it's not fun at all!"

The elf blinked her big flickering eyes, revealing a very defeated look.

"As a reward, this elf won't test you!

A light like a star flashed from her fingertips, falling on Xu Chen's forehead, quickly blending into it, and soon, a star mark appeared on Xu Chen's forehead, which looked mysterious and infinite.

The brilliance of the stars turned into a thought, and it exploded in Xu Chen's mind. Countless knowledge was absorbed by him in an instant.

Really. Xu Chen got the answer from this, the system spirit is indeed an extremely special life generated by the wish power accumulated in the too illusory realm, in addition, the mind also includes the specific changes of this upgrade. The biggest change. It is to add a building function.

"This seems familiar!"

Look at this familiar interface. Xu Chen said with emotion.

"Of course, this is a game model that you have extracted from your head, and I think it's better for you to understand the operation. Do you like it?"

The system elf boasted.

Xu Chen was completely attracted by the light screen in front of him, and all the pictures on it were completely copied from a template of a web game he had played in his previous life.

At this time, his rank in the system is the domain master, which means that he is actually equivalent to the lord of the Northern Regions, and the place where the main city is located is Xuanwu County, and other places are all around and extended.

And the map displayed in this light screen is the thumbnail of the entire Northern Regions, and there are three places hidden in the fog that cannot be seen really, and it is speculated that the situation around Guò is speculated, and Xu Chen quickly recognized one of the places where the Netherworld Palace is located.

There was a mysterious power hidden there, in the map, it was dark to show it, which made Xu Chen a little frightened, it seems that those forces who went to explore did wake up the mysterious existence, and Zhong Lao said that the palace was alive.

Moreover, a certain great power extracted a superb spiritual vein to conceive that palace, it must be a habitat for a powerful person in the world, and it is very likely that the strong man did not die completely.

"I wonder how many people will die this time?"

Xu Chen sighed in his heart, but he knew that it was related to that kind of mysterious existence, and it was not something he could interfere with now.

It's just that the mysterious finger bone that I met before is able to directly break through the protection of the system and drill into the Mixed Yuan Ding, if you don't know how to provoke the mysterious being, it must be the old birthday star hanging, and he will have a long life.

"No matter! the sky is falling, and there is a tall man on top of it!"

Thinking that this was led by the Holy Domain and the major families, after the situation expanded, those old changes and states would definitely intervene directly, Xu Chen immediately threw the matter of the Netherworld Palace out of his mind.

Judging from the thumbnail of this system, just like the last time the mind was integrated into the mysterious statue, the more densely populated the place, the more it makes up for the brilliance of the stars, especially in this Blackwater City.

However, there are also many cities that are dark, swept away at a glance, there are not a few such places, Xu Chen's heart was gloomy for a while, which means that the people are extinct!

The reason for this is mainly because of the chaos in the Dark Temple this time, and partly because of the occurrence of the beast tide, some small cities were washed away.

"I should probably build a wall to keep out the tide of beasts!"

Xu Chentong guò thumbnail, and soon found that the population was all gathered in several large cities, such as Blackwater City, Great Wilderness City, and Tianhuang City within the original Huang Sword Sect.

"Huàn seventh-level city wall!"

Xu Chen inquired in the system mall, and soon found the items he wanted, if he exchanged them all, he would need 200 million aura values, which could almost be exchanged for a ninth-order high-grade mysterious weapon, which was extremely luxurious!

This seventh-level city wall can withstand the full force of the seventh-level brute beast, and in some places where the beast tide is not very violent, it is enough to protect the safety of the residents in the city.

"Are you sure you want to spend 200 million aura values for this city wall?"

The system elf asked with some incomprehension, in her opinion, Xu Chen should use these aura values to exchange for some items to improve his strength, and even speed up the time retreat.

After all, as a system elf, her first consideration is how to help her master improve her strength as much as possible.

"Elf, let's get huàn!"

Xu Chen smiled faintly. He didn't know what others would choose, but he couldn't bear to see those civilians die in vain under the tide of beasts.

If you are poor, you will be good alone, and if you are good, you will help the world.

In this northern region, Xu Chen thinks that he can be regarded as a tall man, and he has to bear a lot of responsibility with great ability, and he thinks that this is very meaningful.

At the same time, several cities, including Blackwater City, witnessed an extremely amazing scene at the same time, at the edge of the city wall, a strong golden light suddenly bloomed, and the huge force repelled all people or things that approached.

And then in the shocked eyes of everyone. A wall that circled the city appeared out of thin air. The wall was several zhang high and three zhang wide, with rows of battlements on it, and it seemed that there were also sharp weapons for attack.

"What's going on?"

in these cities. There is no shortage of strong people. Some are even already powerhouses above the Zongwu Realm. They all looked at the scene in front of them with horror on their faces.

A more knowledgeable old man looked at the suddenly appeared city wall for a while, and said in extreme shock: "This is actually a formation weapon! It is also a formation weapon composed of seventh-order mysterious weapons!"

Just when everyone was at a loss, an extremely majestic voice came from the clouds: "This is the defensive weapon that the deity gave to the Great Wilderness City. It is specially used to resist the tide of beasts, and no one is allowed to pay attention to this array, and those who violate it will die!"

This voice sounded in everyone's minds at the same time, no matter how high or low their cultivation was, they were all irresistible!

"The city lord of the Great Wilderness City listens to the order, and this envoy will pass you the method of using this array weapon......"

"Obey the decree of the Honorable Envoy!"

Soon after this voice came out, the city lord of the Great Wilderness City immediately rushed out of the city lord's mansion and prostrated on the ground and bowed three times above the heavenly dome.

"Could it be that this person was a Sanctuary envoy just now?"

Seeing the actions of the Great Wilderness City Lord, many people began to speculate in their hearts.

"Yes! Definitely for sure! In addition to the Holy Domain, where else would there be such a strong person, directly wandering in the void with his soul thoughts, and directly taking out a complete set of seventh-order array weapons, which is enough to refine a ninth-order mystical weapon, this is really a lot of courage!"

Gradually, the more everyone thought about it, the more reasonable it became, and then they began to secretly appreciate the Holy Domain.

Xu Chen, who was secretly paying attention to this qiē in the system, nodded slightly, since they suspected this matter to the head of the Holy Domain, he did not deliberately explain it.

After all, he did it for peace of mind, not to gain a name.

Sweeping his mind on the thumbnail map, Xu Chen built a city wall in turn in all the cities where the population gathered, believing that with the protection of this city wall, even if there was an eighth-order barbarian beast emperor attacking the city, as long as there was no chaos in the city, he would be able to wait for reinforcements to rescue.

In all the cities, there is a situation like a great wilderness city, especially some rather remote cities, which are directly classified as miracles, from the city lord to the common people, all of whom bow down to the city wall that was born out of thin air, and chant the words of gratitude to Dade.

For them, this beast tide is life-threatening, for half a year, I don't know how many villages and cities have been trampled by brute beasts, and how many people have died because of this, but this city wall given by God is able to block those vicious beasts from the city wall, which is equivalent to having a stable home, and there is no need to continue the days of exile in the past.

After doing this, Xu Chen did not immediately withdraw from the system, the panel in this system was already similar to the siege strategy, or rather, this was exactly what the system spirit extracted from his mind and then imitated.

Xu Chen found that there were many projects that could be built, such as mining, building spiritual fields, and training troops, and what made Xu Chen a little stunned was that after building spiritual fields, the cooldown time could also be directly eliminated with spiritual energy values.

Seeing these options, Xu Chen's eyes suddenly glowed with golden light, it was precisely because of the invasion of the demon clan thousands of years ago that a great battle caused the spiritual energy to leak, and it can be said that it has become a ruin.

But now, this upgraded system seems to be able to completely improve this situation, and as for the aura needed, Xu Chen has hit the Thunder Tribulation.

With his experience, a martial artist who breaks through to the Emperor Martial Realm and transforms through Guò Mixed Yuan Ding is able to obtain 100 million aura values, and the Emperor Martial Realm is 10 million. Now there are a large number of reserve talents in the Mixed Yuan Dingzhong, which is equivalent to how much aura value?

Nearly 100 billion!

Even those extremely rich regions can't take out so many top-grade spirit stones at once. (To be continued......)