Four days later, in the eastern part of the Red River Plateau.

Lin An flew to the edge of a rock wall and crashed straight into it.

The seemingly hard rock wall actually caused a ripple, and Lin An disappeared as a whole.

Hidden by the illusion was a crack, and a cave was opened up in the crack that could accommodate people to rest, and Lin An came to the mouth of the cave and entered it in a flash.

"How's it going, Master Lin?"

In the small cave, the magic light source hung at the top, and Master Buyulai, who was holding a book, raised his head, and the warning circle she set up outside had already discovered Lin An.

"No problem, all the fixed eyes have not been destroyed, but the charging is a little troublesome, and we need to go in person every time."

For this, Lin An complained a little like the other masters.

"No way, for the improvement of the fixed eye, Master Ulysses's stele has been discussed for a long time, unless more materials are used, the current charge once a day is already the limit of showing materials."

It was natural for Master Buyulai to bring up the discussion on the stele and had fully adapted to the atmosphere.

"But the low cost of the material is the advantage of fixed eyes."

Lin An said helplessly:

"The number of fixed eyes we needed was just too many! All known roads have to be plugged in at least ten, and those demon miscellaneous soldiers are constantly widening the paths as they cross the mountains and mountains, increasing our workload. In this case, it is not realistic to sacrifice the advantages of low material simplicity. ”

"Yes, that's the big problem. Otherwise, if we are willing to build four mage towers, no matter if they will be destroyed in the outbreak of the strong war in a year or two, and bring this radius of hundreds of miles under the supervision of the mage tower, of course, it will be easy to solve. ”

"Uh......"

The speaker had no intention, but the listener had a heart, Lin An remembered his flying tower, and immediately changed the topic.

"By the way, after I have completed these three days, I will have to send Master Cadillac and them back."

"It's time too."

Master Beyolai said:

"I feel that one of them, Master Bisis and Master Gloria, is on the verge of being promoted to a half-step legend."

"Really?"

Lin An didn't have such an accurate perception, because she hadn't gone through this stage yet, and was about to ask more with interest, when suddenly, a vertical mirror that was flat next to Master Buyulai's hand lit up.

Lin An immediately froze.

The monitoring mission is boring, but this is the first time that the two of them have carried out the mission, and the novelty has not passed, and finally met the demons, Master Biyulai is slightly excited, and his thin hand brushes the smooth vertical mirror.

"Let me see, where did the fixed eye catch the fish?"

Among the hundreds of pale white light points arranged like a chessboard in the vertical mirror, one of the light spots at the edge showed a pale yellow, and this yellow light was rapidly brightening, showing that the number of demons who had passed through the fixed eyes was rising, but it did not change color, indicating that the energy intensity in the body of the passing demons was not high.

"Oh, it looks like they've found a hidden mountain path again!"

Because the light spot did not change color, Master Biyulai did not let the situation over there appear more clearly, and said to Lin An:

"Looks like you're not out of luck."

The reason why I say this is naturally because they have already been assigned, and in the process of monitoring, they take turns to dispatch, these three days are Lin An first, and the next three days of rotation are Master Biyulai.

"It's not so good, it looks like I missed the order of my charge with them."

Lin An just took out the book, smiled helplessly, and had to get up and fly out again.

Lin An flew in the air, hiding his own existence and looking down at the earth below.

Due to natural disasters, most of the vegetation in this area has been destroyed.

It is conceivable that after this toss, the grass roots that are lucky enough to survive in this land will be further reduced in the next spring, and the future of the increasingly barren Red River Plateau can be predicted.

As an envoy of the dawn, he instinctively gets close to life, Lin An is naturally not happy with this kind of scene, but Titi likes this environment very much, and he burst out of the shadows with a sigh and ran in front of Lin An.

There was a limit to the speed of the flying technique, and Titi's speed had obviously increased again, even on the ground, he was much faster than Lin An.

But where the fixed eye that sounded the alarm was, there was no trace of the demons.

Not to mention the demons, I didn't even see a single footprint.

Lin An was unexpected.

Although it is an undulating hilly terrain, a large area of red soil on the hillside is exposed under her sight, without shelter, Lin Anfei turned around twice in the air, and it can be seen at a glance within more than ten miles, those demons are running so fast?

Lowering the height and about to reconnoitre, Titi came out of nowhere, covered in dirt, standing on the top of a high slope and beckoning.

He found a cave with the entrance behind a large rock at the bottom of a high slope, and he couldn't see it from the heights.

Lin An found a fixed eye inserted in the rock crevice not far from the big mountain rock.

This cave was still not there half a day ago, Lin An had just charged the fixed eye, and he was very sure of this.

However, after seeing some big footprints like claws and webs near the entrance of the cave, Lin An understood.

"Beria? It seems that these demons came through tunnels. ”

The new discovery made Lin An's face solemn.

The Villa clan is the most vassal race in the demon world, they don't have a strong physique, and their number and overall strength are far inferior to those powerful clans, but they have a strength, that is, they are good at digging holes.

The totem worshipped by the Villa tribe is the pangolin, the tunnels they dig are fast and strong, and they are the full-time architects of the Demon Realm, and the underground dungeons in the Demon Realm are basically dug by the Villa tribe.

Because of this specialty, despite the strength of the clan, the Villa clan can still have a place in the demon world, and many powerful clans are accustomed to accepting them as vassals, building dungeons for them in peacetime, and being the best sapper in battle.

Ignoring the taboo of nature's divine power, the white palm was attached to the soil near the entrance of the cave, and the vague feedback from the earth verified Lin An's idea.

There are already a lot of tunnels under the ground of the Red River Plateau, although they are not as good as Cheng Dù that extends in all directions, but the total length is not less than 100 miles, and it has obviously been dug for more than a day or two.

At this time, a large number of demons were moving forward among them, and there was no sound between the marches, only heavy gasps and rustling footsteps echoed.

These demon miscellaneous soldiers who were used as cannon fodder actually played the trick of dark Chen Cang under their noses!

It's her territory!

Lin An laughed angrily, and after a turn of thought, he pressed the idea of collapsing the tunnel, Lin An asked Titi to sneak in first to see where the other end of the tunnel led, and she retreated, and after flying into the air, she used the communication crystal to contact Master Buyulai.

"What, Villas?!"

Master Biyulai is no stranger to this clan, and there are also many Villa clans left in the Ice Plains Demon Clan, and most of the habitat of the Ice Plains Demon Clan relies on this weak clan to build.

The question is-

"The question is, how did they get in?" There was a hint of anger in Master Bioulai's tone.

"The Villa tribe has no obvious characteristics, and it is not difficult to disguise it."

Lin An had already calmed down, and said in a deep voice:

"The problem now is that we don't know how many demons have been smuggled out of the monitoring area, and the towns in the rear may have been attacked by a large number of demons!"

"Damn the Holy See!" Master Beyolai cursed.

This is the disadvantage of non-native warfare.

They have no mass base, and the religious brainwashing of the Holy See makes them feel like they are blindfolded and unable to know the changes in the situation in the rear in time.

If it was the red-robed bishop of the Holy See who was monitoring here, a large number of missionaries under the command of the Holy See would have gone deep into the people and organized layers of defense, so that their eyes and ears were all over the Red River Plateau, and as long as there were people, the demons would have nothing to hide.

Letting the demon race fall into the sea of the people, this is one of the tactics that the Holy See was able to lead the human race to victory back then, and it was similar to the red regime in Lin An's last world.

The mages who had escaped from the mundane possessed great power, but they could never do so, and the low point of the elemental tide caused the overall strength of the mage nobles of the Magic Dynasty to decline significantly, which led to the collapse of the Magic Dynasty overnight.

Leaving the task of informing the others to Master Buyulai, after ending the communication, Lin An unconsciously thought far away, until Titi heard back.

["Ann! ”】

["Titi, have you found an exit?"] ”】

Titi didn't say anything, and there was a strange movement in her heart, and Titi conveyed back what he had seen.

Surprisingly, the exit from the tunnel is not on the surface.

It was a huge underground space, located dozens of feet underground, and thousands of demons, mainly Libyans, were digging in it.

Titi's gaze moved slowly, and Lin An estimated based on the scale of the unfinished cave in his field of vision that the scale of this underground space was no less than that of the Ice Plains Demon Royal Court.

The air in the underground caverns under construction is turbid, and it is precisely because of this that those demons have to dig vents on the surface from time to time, otherwise these turbid and flying dust alone are enough to suffocate many demons inside.

The Libyan people are very experienced in digging underground cities, and they introduced groundwater to facilitate construction, but also to make the humidity of the underground space quite high, otherwise with the concentration of dust in the air, a small fire can turn into a big explosion.

What do you do with digging such a large space?

As if to explain Lin Anxin's doubts, Titi shifted her gaze and turned to the center of the underground space.

A large number of Villas are tinkling and digging there, and a square platform in the middle has been faintly formed, and the Villas are carving some patterns on the side wall, although they can't see clearly, but they have made people feel a solemn and majestic atmosphere for no reason.

Altar!

The altar of the demon god Thor!

Lin An suddenly realized.

She suddenly forgot about the tunnel leading to the rear, no matter how many demon cubs ran out, it couldn't compare to the danger of this altar!

Fortunately, it was discovered early, and these demons have not yet repaired the altar.

["Well done, Titi! ”】

Lin An hurriedly asked Titi to continue to investigate, in case the demon clan was cunning and rabbit three caves, not only digging such an underground altar, but he immediately contacted the dark blue magic god.

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