The sound above sounded twice, and Gehn was alert below, summoning the shadows to form fog, and hiding his figure into the shadows in the corner of the wall. Sure enough, someone jumped off from above and was a familiar figure.

"Senior sister?" Gehn recognized Cassandra. Although she was wearing a fluffy black dress and a mask on her face, her eyes were so recognizable.

"Ah!" Cassandra was startled by Gehn and almost made a sound. She immediately reached out to cover her mouth and whispered: "Gehn? Why are you here?"

"Where are you?" Gehn tilted his head and smiled meaningfully on his face. "I didn't expect that a good student like my senior sister would have to sneak one day."

"Shh, don't say anything, I'll just come in and find something." The senior sister made a booing move, with a pair of crescent-like eyes with a smile.

"Is it a book?"

"How do you know?"

"You can guess it if anyone else comes." Gehn shrugged.

"Sir Cotton has an out-of-print ancient book. I don't want it to be put in the warehouse and fall into dust. If I take it out secretly, no one will find it." Cassandra said.

"Is it a spell book?" Geen also became interested. Since he began to learn Star Gate Technique, he has felt the magic of ancient magic.

"No, it's an ancient book that studies gemstones," said Cassandra.

"Senior sister, are you interested in gems?"

"I'm not interested, but it's an out-of-print lonely book, an lonely book! There's only one in the world!" Cassandra was obviously only interested in that book, and it didn't matter what was written on it.

"I was still flipping through Cotton's stuff just now... I think about it, the book's words seem to be here."

Gehn opened the pile of things he had just pulled apart again, and found a box of books with familiarity. Most of them were old Esperanto language from the pre-war period. Gehn couldn't understand the content, so he had to ask his senior sister to find it himself, and he was standing guard beside him.

"Tick! Success, prepare to retreat." Gehn's electronic manual rang again, and it seemed that Sass had found what he wanted.

"Senior sister, we're going to get faster."

"What's wrong, do you have an accomplice?" Kassandra saw that Gun had been reading the electronic manual.

"It doesn't need to be so ugly... I just come and find something together, just like you."

"Then we are also accomplices." Cassandra laughed. She kept rummaging through the ancient books, her movements were fast and quick, and soon found the books she wanted, but Cotton's other collections were also good. She began to hesitate. If it weren't for the inconvenience of lurking, she would have wished to pack all the books away.

"Senior sister... we don't have time!" Gehn urged uneasyly. The warning system in the warehouse would be changed to patrol mode regularly. Then they would have no blind spots to get into and they had to leave quickly before that.

"Okay, okay... I'll bring this, and this... wait, what's this!" Cassandra was rummagingly searching for the book in front of her when she suddenly saw something strange.

Cotton actually had a book made of a special decorative fake book, with box-like spaces inside, and something was hidden in the fake book.

"This is..." Geen looked at the ominous black light. He knew that thing. It was a core of the mind beast! When Geen killed the mind beast, he would use shadow thoughts to directly take out the core of the mind beast and crush it, so that it would die. Other light thoughts would do this when fighting. Unless the task requirements are special, they would occasionally seal the core of the mind beast to send it to the research center.

However, this core is complete and has not been properly sealed. There is only a layer of characteristic oil film in the fake book that seals it up. Cassandra accidentally broke it when she opened it. Now the core of the mind beast begins to float in the air and emits a rich black mist.

"No, it's going to hatch." Gehn's heart tightened. If the Mind Beast was killed and did not destroy the core, it would not take long to resurrect it. It happened that the Mind Beast would trigger the alert if it was born. The few of them were found in the warehouse and were found in a vague way.

"Take it out!" Cassandra made a quick decision: "It will take at least ten minutes to hatch. Let's leave quickly and go outside to get rid of it."

"What level of mindful beast is this?" Gehn felt something was wrong when he saw the size of the core. The most he dealt with was the ferocious wolf level. The core of those mindful beasts was only the size of a thumb, and the core of this mindful beast was as big as a fist.

"At least, we two should be able to deal with it."

"I still have accomplices... no, I still have companions, and Sars is here, so he can help." Gehn said quickly, without any idleness in his hands, and quickly sent a message to Sass, informing him of the matter of Sass, asking him to leave now, and Gehn would take the Sass to the woods behind with his Sass.

News came from Sass soon, and a look he sent was shown on the electronic manual, a villain with a pouting and unhappy face.

Whether they were happy or not, they could only do things like this. Gehn and Cassandra took the time bomb-like core and left the ventilation duct as they went out, and when they went out, they restored the cut pipes to their original position.

Without Sars' invisibility, it did not prevent Gern and the others from escaping. Kassandra summoned two starry black cats and stretched them into a long cloak. The black cloak covered on her body could perfectly blend into the night. With the concealment of the black cat cloak, the two of them successfully avoided the guard's eyes, and Sars naturally escaped more easily.

Behind the warehouse is a secluded woods, a zone connecting the academy and the wilderness outside. It is confirmed that it is far from the guard. Cassandra threw the core to the ground. The black oval stone has undergone tremendous changes. A large number of chaotic limbs were born in the thick black fog, and bones and flesh condensed from the mist. These things are quickly gathering together and gathering into a monster's skeleton. It has already seen its shape in less than two minutes.

"It's the demon snake Xudra, the tiger level." Kassandra could see the species of the beast from the skeleton, and Gehn also learned this kind of monster in the beast ecology.

Xudra is a powerful serpentine beast. Its appearance is usually a three-headed giant snake, which is very similar to the giant serpentine beast that Geen and others saw in Mingyue Mountain before. It will also split and save their lives after being attacked. However, if it is a newly reborn mind beast, it may not have that strong ability.

A huge three-headed giant snake was born in the woods, and its huge body emerged from the thick fog. Its tail swept easily to break all the surrounding trees in the waist, making a huge roar. If it is allowed to continue to destroy, it will sooner or later be discovered by the people in the academy and must be dealt with quickly.

"Spell · Zewu!" Kassandra had already been ready and launched an attack at the moment the giant snake was born. A mist formed by the spell mixed the giant snake with the black mist on its body.

Taking advantage of the moment when the thick fog blocked the giant snake's vision, Gehn and Kassandra both launched attacks, and several black crossbow arrows and starry black cats rushed towards the giant snake!

The beast of Mind has just recovered and obviously has not adapted to the surrounding environment. It was caught off guard by the sudden attack. The black cat that gathered over was quickly expanded and turned into round orbs, exploding on the giant snake like a bomb.

The black cat bomb was amazing. Even the tiger-level mind beast was severely damaged after a round of bombing. The giant snake let out a shrill wail, and a new snake head grew from the broken hole on its body. A large number of pieces were born from the black fog and gathered towards the new snake head. Gehn's arrow hit one of the giant snake's heads. The rain of arrow shot through its eyes, but did not destroy it directly.

"It will become stronger after being injured, and the battle must be ended with one blow." Cassandra frowned. She had also heard of this kind of beast in the course, but she did not expect it to be surprisingly difficult to deal with in actual combat.

"Although that's the case, this is a tiger level after all." Gehn took two breaths, and the consumption of firing so many Shadian arrows in succession was still very large.

"Hit the firepower and hit it on the head, I will deal with two. You can find a way to solve one, leave that blind head, and the next round of attacks can completely solve it." Cassandra made a plan with his rich combat experience.

"It may not be possible to fight accurately... By the way, where did that guy Sass go? It would be much easier if he is here."

Gehn took a deep breath, held the hilt of the black lightsaber at his waist, and used the beast hunting song when he drew his sword and used the beast hunting song. Several powerful black lightnings were activated. Gehn had already used this move easily. After so many battles, his will was also increasing. This time, the beast hunting song was even more powerful, but his accurate head was still out of his control and killed towards the blind mind of the giant Snake.

Kassandra had no choice but to adapt to the situation. The three starry black cats that jumped out of her hand were filled with light thoughts. They jumped up and rushed towards the other three heads of the giant snake. The three black cats turned into long swords covered with starry sky patterns in the air, and almost hit Hidera's three heads at the same time. The giant sword burst out with huge energy as soon as the giant sword pierced the giant snake. Kassandra's attack poured all his strength and gathered all his light thoughts.

"Star pattern triangle killing formation!" Kassandra clamped his hands at the same time, and the three long swords emitted a dazzling bright light at the same time. The light of the star spots inside instantly expanded like the stars turned into a dazzling sun. The strong beams connected to each other, forming a triangle to string the three heads of the giant snake together, "Explode!"

Three long swords exploded in unison, and a strong impact spread out from the giant snake, destroying all the surrounding trees and spreading into a circular area with a radius of dozens of meters.

"Success!"
Chapter completed!