Two days later, Luo Chen returned to the base camp smoothly alone.

Chu Xinyue and the others have already been received by him in the Birth Star Tower.

In a little more than a month, the camp has changed dramatically.

The main hall used to protect the passage of space has been completely completed.

The magnificent hall, the whole is built with a huge stone of ten meters long, wide and high, the height is thirty or thirty zhang, and the length and width are more than 100 zhang.

At this time, there were some rune masters, surrounding the main hall, carving runes on the walls.

These runes are all used to strengthen the main hall, and with the protection of these runes, ordinary attacks cannot destroy the main hall at all.

Moreover, there is no portal in the main hall, and if you want to enter and exit, you need to open the mechanism, and the mechanism is controlled by runes, so even if someone comes here and wants to sneak into the human space, it is absolutely impossible.

What's more, the ground around the main hall has also been paved with bluestone, which looks very neat, and already has a hint of the rudimentary taste of the city.

Not far from this hall, another hall is under construction.

Luo Chen heard Fu Qianying say that this second hall is the core of the future Terran base camp - the Hall of Elders.

After the construction of this hall is completed, the affairs of the Anti-Demon Alliance will be handled here in the future.

After a brief investigation, Luo Chen went straight to the wooden house where the Elders' Church was located.

Fu Qianying and the other thirty chief elders were there, and after seeing Luo Chen, everyone's eyes lit up.

Luo Chen came back at this time, so it proved that the Green Wind Array had been cracked, which was very good news for them.

"Succeeded?" Mei Aohan, the first elder of the Holy Xuanmen, still asked.

"Hmm. Luo Chen nodded.

"Good. All the elders present praised in unison. With the protection of the Green Wind Array, the safety of the Terran camp was assured.

"Then when can you start setting up the formation?" asked Xie Jinglin, the first elder of the Holy Sword Sect.

"You can do it at any time, but the elders need to determine how big the scope of the formation should be. Luo Chen said.

He had already seen it when he came in just now, and now the area of the camp had expanded to a radius of a hundred miles.

This distance is not small, but compared to some big cities of the human race, it is still a little small.

"We've been talking about this for a long time. Fu Qianying opened his mouth and said: "This place is the last line of defense of the Terrans, once this place is breached, the Terrans will be doomed, so our plan is to make it as big as possible, and the more people that can be accommodated here, the better." ”

"According to our plan, after the city here is built, we will immediately mobilize a large number of warriors from the Terran space, and the number of people is initially estimated to be around 10 million. ”

"According to this number, our current camp will be expanded by at least three or four times, so the scope of the large array is initially set at a radius of five hundred miles, and this range should be enough. ”

Luo Chen secretly calculated, such a large range is definitely more than enough to accommodate 10 million people.

Immediately, he nodded and said: "In this case, I will start arranging the formation tomorrow, the whole process may take about a month, during this period, you must do a good job of defense, once the big array is launched, the fierce beasts in this range feel the crisis and may riot." ”

"Well, we'll arrange this, you can just set up the formation. Fu Qianying nodded.

"Okay, then I'll quit first. Luo Chen said, turning around and preparing to leave.

"Luo Chen, pay attention to rest, don't be too tired. Kong Fan suddenly said loudly: "We haven't found any aliens yet, we still have time, don't put too much pressure on yourself." ”

"That's right, take a break. Fu Qianying also nodded.

"Yes, Elder Xie cares. Luo Chen said, turning to leave.

Back in his exclusive wooden house, Luo Chen immediately took out a piece of paper and drew a circle.

This circle is the range of the formation he wants to arrange, and before arranging the formation, he has to determine several locations for the formation.

This kind of super-large range formation is not as easy to determine as the direction of a small formation.

Moreover, it was the first time for him to arrange such a large-scale formation, and he was a little bottomless, so it was still necessary to draw a diagram in advance.

Holding the piece of paper, Luo Chen scribbled and painted for more than half an hour before finally determining each direction of the array.

Then, he arranged the vigilance formation and entered the Birth Star Tower to sleep.

It takes a long time to set up such a large array, and the consumption of mental power is also very large, and he must maintain his best condition.

When I woke up, it was already the next morning.

Luo Chen immediately set off with the drawings he had drawn yesterday.

After establishing a point in the center of the camp, Luo Chen set off eastward, and did not stop again until he had walked five hundred miles.

Then he cut a log and made a mark.

Then he returned to the camp and went five hundred miles west to make a mark.

After that, the south and north sides are also marked.

These four markers, called locating piles, can be extended on this basis to determine the location of other points.

Then he began the long process of setting up the formation.

He had completely cracked the rules of operation of the Green Wind Array and mastered the rules used by the Green Wind Array, so it was not difficult for him to set up the formation.

It's just that the scope of this formation is too large, so it will take a long time.

Standing in front of the positioning post on the east side, Luo Chen's spiritual power moved, and the green wind around him began to condense.

Once the green wind is formed, it will quickly seep into the ground under the positioning pile.

And what Luo Chen has to do is to maintain this action, so that the ground hardens, and becomes a hardened ground like a basin.

And in this hardening process, the laws contained in the green wind will be engraved under the ground, so that they will play a role in the future.

This process lasted for a whole day, and the vicinity of the positioning pile on the east side was finally hardened, and the law was successfully engraved.

After resting for the night, the next day, Luo Chen went to the positioning post on the west side.

The third day is the south side;

The fourth day is the north side.

Then from the fifth day, it is northeast, then southeast, southwest, northwest, ......

After all these eight directions were hardened, Luo Chen's formation was already half successful.

At the beginning of the ninth day, Luochen began to continuously harden the center points of the two positioning piles.

After more than half a month of this cycle, Luo Chen had hardened twenty-four points before and after.

These twenty-four points have spread in all directions, and they form the overall framework of the Green Wind Array.

And what Luo Chen had to do next was to connect these points and let the formation start to work.

This point is relatively simple, he only needs to create a green wind between the two points, and the rest of the two points will be engraved in the law for him.

So, Luo Chen immediately took action......

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