For seven days, nearly ten real people of a true lord have been patrolling in front of C398, without giving any chance to attack the barbarians.

Behind them, nearly 10,000 monks were working hard, and almost all the fortresses were overturned.

Seven days later, a monster-like building was officially formed.

The interior is still built on the mountain, and the area is not much larger, but the appearance of the entire fortress has completely changed.

The Qitian Mountains are close to each other and have rich mineral veins. Those low-level fine iron ore, black iron ore, etc. have a wide variety and huge reserves.

Xiang Yang spent three days running around with the giant hills, almost digging out all the ore veins within a radius of thousands of miles. Fortunately, the Qiankun Cauldron clone was there, so it was convenient to directly refine it on the spot and take it away.

By the time he returned to the Fortress of C398, the clone of the Qiankun Cauldron was filled with various fine iron, and the reconstruction of the fortress had been initially completed.

Then it took another four days to arrange the arrangement and finally took shape.

According to Xiang Yang's plan, the fortress will be divided into three parts.

The first thing to do is to dig a deep foundation in front of the fortress, and then directly fill it with melted iron juice to prevent the barbarians from driving the earth-based beasts to attack.

Then, after this foundation, there is the formation area, where he will set up a combined formation composed of nearly a hundred wind-type array plates. These array plates are not very powerful and are very simple to manufacture and replace.

The most important thing is that as long as there is an ordinary vital stone, it can be driven by it. Even if there is no vital stone, a monk in the Foundation Establishment Stage can use his vital energy to persist for half an hour.

With these formations, when the barbarians use throwing attacks, they can not only slow down the attack speed, but also slightly change the range and angle of the attack, creating conditions for dodging for the rear fortress.

And these formations will still be covered with a thick layer of fine iron, leaving only a few air outlets of about an inch. Anyway, the wind power can be exerted as long as there is a small space, and even after space compression, the power will be greater.

After these formations, it is the first line of defense of the fortress. According to Xiang Yang's design, this side will present an inverted structure with a thirty-degree angle, and thick metal hook angles will be generated on it.

This is designed to prevent the barbarians from self-destructing attacks. The best and most solid materials will be used. Xiang Yang found a black crystal vein and used it as the main material. After it was completed, it was also poured with a layer of alloy iron armor. According to estimates, with such a hardness, the Barbarian Emperor under the Three Mountains would only collapse at most a few feet of corners after self-destructing.

Behind, above the fortress is the monk's array platform. He thoughtfully divided it into several areas, from the Three Talent Formation to the Five Element Formation, there are special array areas for use according to the power of the formation and the distance of the casting range. Moreover, after all these array areas are activated, they can be combined with each other to upgrade.

Next to each array platform, there are bunkers and rest areas for evasion, and even special medical and reserve areas are divided.

Finally, all areas, including the fine iron foundation at the forefront, are connected by alloy channels. In the center of the fortress, there is a huge smelting furnace, which can produce huge amounts of alloy iron juice anytime and anywhere, for easy maintenance.

The entire fortress is thousands of feet in front and back, up and down, left and right, and is covered with a shell made of iron juice.

If you want to make an example, today's C398 is like a honeycomb, with all connections inside and a thick steel shell on the outside.

No wonder, after C398 was officially completed, those knowledgeable experts were stunned after visiting it, and even Huquan Zhenren could only shake his head and say nothing.

How much manpower does the barbarians need to use to win such an iron mass? If the entire Qitian Mountains were built like this, the barbarians probably might not even have the courage to attack, right?

But this is actually not realistic.

In C398 alone, Xiang Yang dug up all the ore veins within a thousand miles, and within this thousand miles, there are dozens of fortresses like this, which does not include the two lines of defense A and B behind it.

Such a steel fortress covers the million-mile Qitian Mountains? Not to mention Beishenzhou, the entire mountain and sea world cannot provide so many resources!

This is only a special case.

After getting these things done, and with a few experts in charge, Xiang Yang finally felt much more relieved and devoted his thoughts and energy to another important task.

He wants to find out the formation lurking in the Qitian Mountains!

He had to know what the purpose of those orc descendants from other worlds was!

Because, as the war approaches, the deep uneasiness from the soul has become increasingly intense, and it seems that the next moment, a door to hell will slowly open!

Then, swallow the entire mountain and sea realm

Since entering the world of immortal cultivation, his intuition has never been wrong, but this time, Xiang Yang really hoped that he was wrong.

From the True Man of Huquan, he had to go to the detailed map and information that recorded the entire Qitian Mountains. He locked himself in a secret room. After three days and three nights, he walked out with red eyes and still found nothing.

The entire Qitian Mountains were completely formed naturally. In the recorded history, there were no special changes except for a few natural disasters and barbarian wars.

Over the past ten thousand years, countless monks from China have conducted more than once in exploration of this mountain range that spans millions of miles. In some key places, such as the original place of the Sanqing, or even digging thousands of miles, but have never found any clues.

It is really impossible to hide such a huge formation under this mountain range.

In three days, Xiang Yang had sparse stubble growing under his jaw, his eyes were red, his face turned blue, and his whole body looked much decadent.

After obtaining Tianyan, he had never been so powerless. He knew what might happen, but he couldn't grasp the clue.

No matter how magical Tianyan is, after all, it is just a tool that can maximize his derivation ability. Without sufficient data support, it is already an extremely successful achievement to be able to calculate the most likely facts through the exclusion method.

However, most likely, it also means that there is still a possibility of error. Is this judgment wrong? This is not the purpose of the barbarians?

So what is the truth?

While Xiang Yang was thinking hard but was unable to enter, several extremely gorgeous boats were galloping towards the Sanqing Origin.

In front of the boat, a colorful insignia was vivid and vivid, exactly the same as the one on the ripples.

On a Dharma boat in front, Lu Yaoer had a smile on her lips, looking up.

But beside her, they were not the two true guardians, but a young man with long silver-white hair scattered on his shoulders, and his temperament was extremely cold.
Chapter completed!