Absolute blind spots, combined with a wall of mirrors, make it almost like a magician doing magic. Bai Yun and the others were completely unnoticed, and they arrived at the roof of the teaching building smoothly.

"It turns out that the roof of the school building is like this, let alone coming here before, I can't even find the way here. Bai Yun said darkly.

"Okay, senior brother, don't look at it, be careful to be seen by the people below. ”

Only then did Bai Yun notice that the fire seemed to be looking for something.

"Ah Lie, could it be that there are acquaintances among the guards below?" Bai Yun asked.

"Ah, Uncle Shi, it's nothing...... Maybe it's my delusion, I just saw someone enter the building from the main entrance at a very fast speed......" said Agni.

"Really, you mean that someone broke into the school building from the front and hasn't been discovered yet?" Bai Yun exclaimed, "Even if it's an illusion, it's outrageous......

"Anyway, let's be careful, there may be something wrong in this building......" Wu Lu said.

The teaching building of the high school is L-shaped from above, consisting of a four-story main building and a five-story annex building, and the place where Bai Yun and others arrived was the top of the annex building. After the three of them found the manhole, they came to the fifth floor of the annex building.

It was pitch black all around. It's not that there is no electricity, it's that the lights should never be turned on. Each of the three of them had a flashlight in his hand to illuminate the road, and even then, there was not much light in the hallway.

"The physical education teacher and the art teacher's office don't seem to be here, Ah Lie and I will go to investigate tomorrow, and today we will focus on investigating the physics teacher's office. "Baiyun Road.

Physics Yu's office is on the second floor, and the shortest path is down the stairs from the annex building to the second floor.

Three people descended the stairs. 4th and 3rd floors...... Second floor. Next, just walk to the corner where the annex building connects with the main building, and you can come to Mr. Yu's office.

"Uncle Shi, wait a minute!" Wu Lu suddenly shouted, "You go down one level first." ”

"Isn't that one level down?"

Although he was puzzled, he did so. As a result, before I reached the first floor, I found that the stairs were still going down.

"What's going on? I remember that there is no basement in either the main building or the annex building?" Bai Yun exclaimed.

"This staircase does not lead to the basement, but to the fourth floor. ”

"Four-layer, what's going on?"

"If I'm not mistaken, there's an enchantment array set up here, and if you go down from the third floor to the second floor, you'll automatically return to the fourth floor. ”

"No, let's go around to the main building......"

However, after coming to the main building, the three of them found that no matter whether they took the east staircase or the west staircase, after walking to the third floor, and then going down, it was directly the first floor, and the second floor seemed to have been cut off.

"That's right. Since you can't get to the second floor no matter which stairs you take, it means that there must be something strange about the second floor. "Wulu Road.

"And how are we going to disarm the formation now?" Agni asked.

"Speaking of which, when I visited the queen doctor in the past, I also encountered a similar formation technique, and I really suffered a lot at that time. But I'm not like Blackie, who can let the shadow enter the enchantment and tear off the enchantment talisman. "Baiyun Road.

"Of course this method doesn't work, we don't know where the enchantment charm is, and even if we do, the other party will definitely notice it, and we will most likely pounce on it...... Instead of startling the snake, it is better to use this formation technique in turn to come to the second floor. ”

"What do you do about it?"

"Although George's eightfold Bagua Array is complicated, if you find the right path, you can still walk in, just like cracking a code. The same is true for this formation, it seems to be completely closed, but there is still a gap, this is the rule of the enchantment formation. ”

As he spoke, Wu Lu took out something very similar to a thermal imager and took a picture of it.

"Fortunately, I brought this enchantment detector with me, and you see, there are other places besides the stairs that also have enchantments. ”

Bai Yun looked at it and said, "Indeed, it seems that the place where the toilet door is displayed is highlighted. ”

"There is no barrier to the door of the classroom, it seems that the location of the barrier is limited to the room where the door is not locked, and if you enter this toilet, you may be transferred to another corner of the school," Wu Lu said, "Let's go." ”

After saying that, Wu Lu and Agni walked into the toilet together, and then the figure disappeared.

"Wait, this is the women's bathroom! Why did you walk in without changing your face?" Bai Yunleng said, "Forget it, I can't take care of so much now, otherwise I will be alone." ”

After Bai Yun walked in, he immediately saw the two of them. At this time, he also found that it was actually the men's toilet that he entered.

"Sure enough, as I thought, all the spaces connected to the toilets have become a mess. If you're lucky, you might be able to walk out of this toilet and you'll be able to reach the second floor. ”

"Wait!" Seeing that the two were about to leave again, Bai Yun hurriedly shouted, "Will we walk into the locked classroom?"

"It's possible, but you can still get out of the window. With the skills of the three of us, are you afraid that you won't be able to climb up?"

Bai Yun was speechless, so he nodded awkwardly.

When the three of them walked out of the toilet, they found that they seemed to be in the corridor this time. It was pitch black, and for a moment it was impossible to make out where it was.

"Is this the building where you turned right after entering the school gate?" Agni seemed to recognize first.

"You should be talking about the administrative office building next to the dormitory building, right?" Bai Yun took a closer look and immediately saw the damaged wall, "It seems that this is good, but it's not even a teaching building......"

"What people!"

The three of them were taken aback. Only then did Bai Yun notice that this place was on the first floor. Because of the movement just now, they were noticed by the guards outside the building.

The light of the flashlight approached them along with the sound of footsteps, and they wanted to go into the toilet again, but there was no response.

"It's over, there's nowhere to escape now! If you are caught by the guards, you will definitely be invited to the police station, and if you can't say anything bad about it at that time, what should you do......?" Bai Yun panicked.

"The door to this room doesn't seem to be locked, let's hide in first!" said Agni suddenly.

The three of them didn't think too much about it, and immediately hid inside, and then locked the door.

"Nobody, am I mistaken?" Immediately, the guard's footsteps grew heavier and louder, and then disappeared. The three of them finally breathed a sigh of relief.

"I see, the barrier of the toilet door will fail after touching it once, although I don't know if it will fail for a long time or for a short time, anyway, let's take a breath here first......" Wu Lu said.

"Then again, what kind of office is this?" Bai Yunqi said.

"It seems to be a physical education teacher's office ......"

Agni said, shining the light of the flashlight around. There is a door in this office that leads to the back room, where a lot of sports equipment is placed, and it seems that this is indeed the physical education teacher's office.

"Teacher Zhang and Teacher Heping should both work here, it seems that we have been blessed by misfortune, let's investigate here......" Wu Lu said, finding that Agni was a little absent-minded, "Senior brother, what's wrong, what did you find?"

"I didn't ...... Nothing ......."

Only then did Bai Yun notice that Agni Huo seemed to be shining a flashlight on something just now, and when he looked at Agni, Agni quickly moved the light of the flashlight away.

But I still know what Ah Lie saw, it was a photo of a husband and wife, it was Mr. Zhang and his wife.