After repairing the second array pillar, Chen Yi continued to the next array pillar.

However, this time he encountered a teacher from the school.

The teacher, along with two students who had studied formations, was repairing one of the formation pillars.

They didn't have Chen Yi's earth-遁 (earth-遁符) ability to move underground, but they could use earth-遁符 to enter underground to work.

Simply return to the surface before the Earth Escape Talisman expires.

Chen Yi arrived at the underground space dug out by the three men.

The teacher had sensed Chen Yi's presence beforehand and had already secretly accumulated power.

However, upon seeing that the visitor was Chen Yi, he secretly breathed a sigh of relief.

"Senior Brother Chen Yi?"

The two students recognized Chen Yi.

"We meet again."

Chen Yi smiled slightly.

These two were the same two high school students he had encountered on campus earlier.

"The talisman that Senior Brother Chen Yi gave me is so useful!"

"Yes! Even Tianbao Pavilion doesn't seem to have this much!"

Chen Yi calmly waved his hand and casually gave the teacher a few pointers.

"The conduction patterns in the lower three columns are swapped with the activation patterns in the upper nine columns, and the spacing between the counter-current patterns in the middle five columns is shortened by two centimeters..."

The array master looked at Chen Yi with a strange expression.

Will this work?

He also participated in constructing the array patterns inside the pillar, but according to the discussions among the array masters, it should already be the optimal solution...

However, given Chen Yi's reputation as the top scorer in the joint entrance examination of five schools, he couldn't resist giving it a try.

Even if there is a problem, it's just a matter of spending a few extra seconds to fix it.

Then, he made the adjustments as Chen Yi had suggested.

This adjustment resulted in a higher resonance frequency of the array patterns on the entire array pillar, and the overall strength of the array was significantly improved.

The formation teacher's eyes immediately lit up.

How did you find out?

Chen Yi scratched his head: "We discovered it by luck."

The two people beside him watched his back, their eyes practically overflowing with admiration.

Not only is his mastery of talismans outstanding, but his mastery of formations is also remarkable. How can one not admire him?

"Buzz!"

After the array was repaired, Chen Yi discovered that he had also gained 25 battle merits.

He looked at the teacher with surprise, "Why are you giving me so many war merits?"

It should be noted that repairing a single array pillar earns 50 battle merits. This teacher gave him half of the merits, and then gave 5 of the remaining 25 points to each of the two students who helped him. He only received 15 points himself.

The other party waved the token in his hand: "Thank you for your guidance, this is what you deserve!"

The two boys who received 5 battle merits looked delighted.

Since the two of them happened to know some knowledge of formations, they joined the repair team.

Staying on the ground would allow you to accumulate more merits, but it would also be more dangerous.

Because after the giant centipede demon appeared on the ground, it immediately realized something was wrong and retreated back underground.

However, it still occasionally sends out those poisonous hooks, posing a deadly threat to students with insufficient cultivation...

"Would you mind if I shared these improved methods with the other teachers?" the formation teacher asked sincerely.

Chen Yi nodded without hesitation: "Of course, it can make the formation more stable, which is beneficial to everyone!"

"Excellent! You truly deserve the title of number one!"

The teacher praised them, then took out an earth-遁符 (earth-遁符 is a type of talisman used in Chinese magic) and led the two boys to the next array post.

"Time is of the essence. We need to quickly repair the formation and return to the ground. Let's go now!"

Chen Yi looked in the direction they left in, then chose a direction that was quite far away and fled there.

He channeled a wisp of magic into the battle merit token, and a glowing number appeared...

165!

This is Chen Yi's current number of military achievements.

This amount of battle merits is enough for him to exchange for a better cultivation technique than the "Mysterious Immortal Technique".

But having mastered several excellent martial arts techniques, his vision was no longer what it used to be.

His goal is those cultivation techniques that can at least lead to the Foundation Establishment stage!

These techniques have a higher chance of condensing true spiritual energy, but they require thousands of battle merits.

In order to make the exchange, he naturally had to try to find some array posts that few people visited.

Otherwise, sharing the spoils with others would be too inefficient...

......

Inside the Xiande school, teachers and students stared cautiously at the ravaged ground.

"That centipede demon is extremely cunning. It attacked us while we were attacking the outside of the barrier. One student has already been scratched by its claws and poisoned. Please, Principal Ma, send someone to capture it!" a teacher pleaded.

Ma Guangzhi, suspended in mid-air, calmly looked down at the ground.

"You all focus on fighting the celestial beasts, but don't let the formation deteriorate too quickly. Leave the centipede demon to Liu Qing..."

Liu Qing tore his shirt, revealing a muscular physique, and stared intently at the crater in the ground.

As a mid-Foundation Establishment cultivator, his cultivation level was already sufficient to qualify him for a position in the school's management.

The reason I'm still just a homeroom teacher is because I lack experience; in principle, I should wait a few more years before I have a chance to be promoted.

Fortunately, Chen Yi emerged from the class that Liu Qing taught.

Therefore, after this year's immortal exam, he will be promoted to senior grade leader.

Now that Principal Ma is asking him to deal with the centipede demon, it's a way of establishing his authority in advance.

"Whoosh!"

Suddenly, a crack in the ground tore open, and sharp centipede legs pierced several students.

If no one had stopped them, these people would probably have been strung together like candied hawthorns...

Fortunately, Liu Qing's blood surged, and with a leap, he flashed in front of the students.

He threw a punch, "Bang!"

In an instant, the centipede's hooked legs shattered inch by inch.

Those students, slow to realize what was happening, looked at the burly Liu Qing with hearts pounding in their chests.

"Thank you so much, Teacher Liu, for saving my life!" one of the students who was rescued said gratefully.

Liu Qing turned his head and grinned, revealing a row of big white teeth: "See that? This is the power of body cultivators! This is youth!"

He paused for a second, then added, "You guys, I'll remember you. Remember to come to me if you need body-strengthening medicine!"

"Teacher Liu, do you offer discounts for medicine I need to buy from you?" a student asked timidly.

"Yes, I'll offer a deep discount!" Liu Qing sneered. "Top-quality goods, no bargaining!"

After saying that, he quickly moved to a certain spot.

He had barely arrived when a centipede-like claw sliced ​​through the ground like a scythe, aiming for the back of a female teacher in the early Foundation Establishment stage...

"Bang!"

As expected, the hook foot was once again broken by Liu Qing's palm strike.

The female teacher turned around and saw only black dust filling the air.

"Teacher Mei, don't worry, with me, Liu Qing, here, you'll always have nothing to worry about!" Liu Qing flexed his muscles.

Teacher Mei's eye twitched slightly: "Thank you..."

Although she was very grateful to Liu Qing, she still felt that it was hard to like this bald man.

Liu Qing wanted to say something more, but his divine sense seemed to have perceived something.

He suddenly looked up.

The sky suddenly turned extremely gloomy.

The next second, a torrential downpour enveloped the entire Xiande Middle School.

The rain continued to wash over the defensive barrier, creating a loud sound like a small waterfall cascading down.

Suddenly, an exceptionally powerful demonic aura descended from the clouds.

Liu Qing's expression changed drastically, and he muttered, "This aura is no less than that of a late-stage Foundation Establishment expert... no, that's not right, it's that of a peak Foundation Establishment expert!"