Expanses of dragon blood poured from the undead dragon's body, and hot dragon blood billowed smoke from the ground.

If it was an ordinary time, Yu Hao would definitely immediately take out all the bottles and cans on his body to pack these dragon blood, the undead dragon is also a powerful branch of the dragon clan, that is the real dragon clan, not the kind of subdragon species that only has the blood of the dragon clan.

If they can absorb the blood of the undead dragon, as long as their bodies can withstand it, they will definitely be able to improve their physical fitness to an unbelievable level, and even directly reach the level of sophomores.

But Yu Hao didn't dare to act rashly, the bones of his legs had begun to gradually repair, and his eyes never left the strange old man.

"If you don't want to be beaten, get out of here!" The old man said to the creatures around him.

The undead dragon showed a pitiful look, and it really fled so gloomily, and the other creatures didn't dare to stay here any longer, and scattered in all directions.

"This confinement chamber is also a separate space, and the creatures locked up here are all creatures under the control of the headmaster, and I am the only human here!" The old man said.

"Out of the headmaster's control? What does that mean? Yu Hao was puzzled.

"There are countless mirror worlds in the school, and you should know that the creatures of the realm world are all created by the principal, they only have bodies and consciousness, but no souls."

"Hmm."

"However, there are always some special existences, some powerful creatures in the world they discovered this, and then tried their best to find a way to shape their souls, some failed, they still acted as puppets in the realm world, and some succeeded, they left the realm world, but they were locked up here by the principal."

Yu Hao had heard Zen Master Du Er say something about the soul in the world where the god of death came, his cultivation was already very high, and he had comprehended part of the law of death, if he could live a few hundred years longer, it might not be impossible to find a way to give birth to a soul.

But this is just for human beings, you know, there are many kinds of mirror worlds, some of the lower world creatures have a very short lifespan, but some of the higher worlds, such as the existence of dragons, those high creatures have extremely long lives, they may often have a lifespan of thousands of years.

In so many worlds, there are always one or two beings who have discovered the essence of the mirror world, and they have given birth to souls through a long period of exploration, and have left the mirror world to become real beings.

It's just that they don't know that after leaving the mirror world, they did not gain freedom, but came to the world dominated by the principal, and in countless years, the principal does not know how many powerful students have been created, relying on their strength, even the strongest creatures can only be captured.

But the special thing is that these creatures have been free from the control of the headmaster since they have souls, and the school's law of power cannot suppress them, but it is impossible to release them into the main world to destroy the order of the main world, so these creatures can only be thrown into this confinement room by means of captivity, it turns out that this is the essence of this confinement room!

"Old man, what about you...... You also came out of a mirror world? Yu Hao asked cautiously.

"Fart, how can those creatures compare to Lao Tzu? Let me tell you, in this confinement room, I am the one who carries the handle, not to mention this necromantic dragon, even if it is a five-clawed golden dragon, Vermilion Bird Xuanwu and the like, I have beaten it, how can I be the same as those things that are lucky enough to be created? ”

"That'...... Are you from the Overworld, too? ”

"Nonsense, I won't hide it from you, I've been in this ghost place for more than 5,000 years, and from your words, it's almost the period of the Three Emperors and Five Emperors, and it's your ancestor!"

"Five thousand years!" Yu Hao felt that it was already a very unbelievable thing to be able to meet Di Xin more than 2,000 years ago, 5,000 years ago, it was simply the beginning of Chinese civilization, it seems that the existence of the school has been much longer than he imagined.

"There's nothing strange about it, when I entered this school, there were already a lot of people here, you may not believe it, even I don't know when this school started recruiting students, I remember that at that time, there were still a few photos of seniors under our academy building, they were all apes that had not fully evolved hahahaha!"

"Then why the hell are you locked up here? Is it because of the violation of school discipline? But isn't that a credit deduction? If you run out of credits, you will be directly erased by the principal, don't you ......?"

"That's right, my power is so strong that even the headmaster is capable of erasing me!" The sloppy old man smiled, "How's it going?" Isn't it incredible? I'm a bad old man, I don't seem to have any power at all, do I? ”

"Uh......" Judging from the fact that this old man seriously injured the Necromantic Dragon with one move, his strength is indeed incredible, but with Yu Hao's understanding of the principal, as long as he is in the control of the school, he has the power of life and death.

"Do you know what the school emblem does?" The old man asked.

"Isn't it just an intelligent system with space storage function?"

"That's just the appearance, the school emblem is a brand, a soul brand, from the moment you step into the school, the device is bound to you, relying on this brand, the principal can control your life and death! If you are strong in the future, you can try to see if you can destroy this school emblem. ”

Hearing his words, Yu Hao's gaze suddenly swept over the old man, indeed, except for the tattered clothes, there was nothing else on the old man's body.

Yu Hao didn't know how hard the school emblem was, but one thing he knew very well was that as long as they didn't die, the school emblem would never leave their bodies, and it was obvious that the old man had gotten rid of the school emblem.

"Just like you can see, I used my own power to erase this brand, so the principal has no control over my life and death, relying on the power of the school, he can kill me, but the cost is very high, so he can only choose to lock me up here!"

"But why would you want to do that?"

"Hahaha, to get out of this damn school, of course!"

"With your strength, you can't complete the graduation exam?"

"Graduation exams? Hahaha, with my strength, I can dominate all living beings in any mirror world, even if it is a god? But you have no idea what this school was created for, you know, you ......"

"That's it, it's better that you don't know these things now, or you'll end up exactly like anyone else who knows the secret!" The old man's words came to an abrupt end, as if he had touched some taboo.