Hundreds of spirit stones were lined up in a row, and countless array patterns appeared in Xu An's mind, and the array seal in his hand quickly condensed.

Engraving array patterns on various materials is the most challenging for the array maker to understand the array and control the array patterns.

Why is Ye Fei's array powerful, but he can't completely control the array base?

That's because he only understood the principle of the array operation, but didn't master the engraving and arrangement of the array patterns.

Engraving a large and small array pattern on a small array flag requires extreme proficiency in the array pattern.

Ordinary people need to be careful when refining the array base, because a small negligence will cause the entire array base to lose its function.

This also leads to the fact that it often takes half a month or even a month to refine a simple array base.

Array pattern engraving is the most difficult step in refining the array base.

But for Xu An, it is just the opposite. What he has difficulty with is the materials, but engraving the array pattern is extremely simple.

With his extraordinary understanding, he had completely understood the entire forbidden formation, and engraving the formation pattern was just a piece of cake.

The dazzling formation seals in Xu An's hand continued to condense, and dense formation patterns suddenly appeared on the spirit stone.

He didn't even need to look at it, and the formation pattern was engraved as soon as he put it down.

After just three hours, Xu An breathed a sigh of relief.

"Damn, it's still a physical job. It took three hours to get two sets of formation bases done."

Xu An muttered and moved his sore wrist.

If the people in the formation department heard what he said, they would probably fight him to death.

Three hours, engrave two sets of formation bases?

Even the head of the formation department can't do this!

"The formation base is done, and the next step is the guiding formation as a buffer."

Xu An pondered slightly, with countless formation pattern arrangements and combinations in his mind.

He has never learned the guiding formation, but this is not difficult for him, the formations have the same goal.

He could completely deduce such a small formation by himself.

It didn't take long for him to deduce a set of guiding formations in his mind that were completely consistent with the formation base.

The last one was the spirit gathering formation.

"It's a bit difficult to deduce the spirit gathering formation."

"It just so happens that there is a ready-made one."

Xu An smiled and went directly to the underground warehouse of the villa, where a small spirit gathering formation was in operation.

It can be clearly seen that the spiritual power between heaven and earth is constantly gathering.

Xu An has never learned the spirit gathering formation, but this does not prevent him from studying it.

"Wow, the spirit gathering formation is like this?"

"Relying on the extremely strong devouring power to attract the spiritual power from all directions to gather, I thought it was some advanced formation."

After watching for a while, Xu An curled his lips.

It's like some things that you have never understood, and you feel that they are very great.

But after understanding them, breaking through that layer of window paper, you find that it is just like this.

Xu An feels exactly like this now.

The spirit gathering array should be called the swallowing array. Among the forbidden arrays he understood, there was an array that was formally arranged according to the principle of the swallowing array.

Therefore, he only looked at it for a moment, and he had already fully understood how to refine the spirit gathering array in his mind.

"This array is a bit crude, and it can be modified later to make the swallowing ability stronger."

"But in this way, the spiritual power in the surrounding villas will certainly be greatly reduced..."

Xu An frowned and thought, but then shook his head and smiled.

Why bother so much? The rule of the academy is that whoever is stronger has more resources. Then no one can say anything about the spiritual power I plundered by my own ability?

"First, get the array base done..."

Without thinking too much, Xu An completely refined the array base in the next few hours.

A full hundred spirit stones engraved with dense array patterns were scattered around Xu An.

"Leave the fire!"

Xu An's seals flew in his hands, and hundreds of spirit stones were running at the same time, and a blazing flame appeared out of thin air.

He tried other formations again, and nodded with satisfaction after making sure that everything was foolproof.

"I hope there won't be too many people coming, otherwise don't blame me."

Xu An muttered to himself after putting away the spirit stones.

The power of the formation is very strong, and it is completely beyond the ability of the Tempering Body Realm to resist. If you are not careful, you will die.

He will not use this formation unless it is absolutely necessary, and it is regarded as his trump card.

If he really has to use the formation, it means that he is forced into a corner. At that time, it is either you or I!

"The formation will be used for the last time. There are still four days left. I have to choose a few combat skills."

Xu An thought about it and opened the resource website again.

He has never learned combat skills. In high school, just practicing took half of his life. Where would he have time to practice that thing?

However, when you arrive at the academy, you must learn combat skills, which can allow you to perfectly exert your own strength, or even far exceed it.

A few days ago, Xu AnAlthough he seems to have strong combat power, he only relies on the combat consciousness inherited from his memory, and has no combat skills inherited.

"With a strong combat consciousness and excellent combat skills, there should be few people in my class who can beat me..."

While Xu An was thinking, he opened the combat skills column on the website.

Suddenly, a dense array of options appeared.

[Seven Slashes of Spiritual Sword: One sword is stronger than the other, but the seven swords can be combined to burst out a combat power far beyond the body, combat skill requirements: Spiritual Realm, strong spiritual power, credits: 300]

[Pointing Star Finger: Extreme compression of the spiritual power in the body, can burst out a spiritual attack with strong penetrating power, combat skill requirements: Spiritual Realm, the more pure the spiritual power, the stronger the power, credits: 350]

[Wandering Dragon Step: Footwork combat skill, invincible in short-range maneuvers, not good at long-distance escape and pursuit, combat skill requirements: proficient in the 'instant body' combat skill, credits: 500]

....

Xu An simply flipped through the combat skill page, just want to say, sorry to bother you...

Too expensive!

Compared with various materials and skills, the credits required for combat skills are more expensive than one.

Moreover, to practice these combat skills, not only can you learn if you have money, there are also some strange additional conditions.

For example, realm requirements, whether the spiritual power in the body is pure or not, whether the physique is strong... and so on.

Xu An was overwhelmed and quickly chose the combat skills that could be learned in the Body Tempering Realm.

Suddenly, those combat skills that required terrifying credits gradually became acceptable.

[Bronze Body Technique: Temper your own physique, temper your whole body with strong blood and qi, and make your body as hard as copper and iron. Combat skill requirements: those with strong physique and strong blood are preferred, credits: 50]

[One-knife slash: Stop and accumulate momentum, use the whole body's strength to condense a point to explode, powerful, combat skill requirements: the meridians of both arms are connected, otherwise it is impossible to accumulate momentum, credits: 100]

[Instant Body: Footwork combat skill, can move at high speed over a short distance, combat skill requirements: Instant Body is extremely difficult to control, and can be learned by those with a lot of practical experience, credits: 150]

......

Xu An looked for a long time, and when he saw the Instant Body combat skill, his eyes suddenly lit up.

He didn't have a lot of practical experience, but the terrifying combat consciousness in his mind was far inferior to him even to the veterans of the battlefield!

"That's it!"

Without any hesitation, Xu An placed the order directly.

Instant Body, this extremely difficult footwork combat skill that has not sold a single copy in the academy for a year, has found its most suitable master!

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