After escaping from Xiaofen's clutches, Lu Xuan, who was bored, walked around Hall 5 and came to the door of Hall 5.

Whistling and flashing his flashlight, Lu Xuan strode out of Hall 5 and walked towards the lounge on the fifth floor. There were some sofas there, which were much better to lie on than the booths in the base.

"Hey hey hey, sofa! Sofa! I'm coming!"

Just when he was happy, a small black figure suddenly emerged from the bathroom on the right side of Lu Xuan and rushed towards Lu Xuan's calf.

The mutants on this floor have been cleared, and the only stairway leading to the fourth floor was temporarily blocked by Lu Xuan's team, so Lu Xuan never expected to be attacked again.

He felt a sharp pain in his calf, as the thing that attacked him had bitten its teeth into Lu Xuan's flesh.

"Damn! Is there actually this in the library?"

Looking down suddenly, Lu Xuan found that the thing biting his calf was actually a mutated mouse as big as a kitten.

With an angry move with his right hand, Lu Xuan directly summoned a fire ax and chopped off the head of the sneak attacker with one blow.

"Damn, what a bad luck!"

With a forceful swing, Lu Xuan threw half of the dead rat's body away with his legs. With a bang, the mutant rat hit the southernmost corridor wall hard.

Half-crouching down, Lu Xuan lifted up his trousers and took a look at the wound. He found that the blood flowing out was red, so he safely wrapped the wound with the simple bandage he brought with him.

Just when Lu Xuan finished treating the wound and wanted to stand up, he heard a roar suddenly coming from the lounge, and then a zombie with a blue light rushed out, and then rushed to the ground where Lu Xuan had just been killed.

The mutated rat corpse was smashed into a bloody mess and he ate it in big mouthfuls.

"There are actually mutants?! Where did they come from!"

Trying not to make a sound, Lu Xuan waved his hand and summoned the fire ax again. Then he took two steps forward, then raised the fire ax in his hand and struck the zombie on the head.

.

Seemingly immersed in the joy of dining, the blue-light mutant was unprepared and was directly struck by Lu Xuan with an ax, causing his brain to crack and fall to the ground.

Lu Xuan wiped the various bodily fluids on his body with his hands in disgust, then turned to look inside the lounge.

It was still empty inside, with nothing except some simple furniture.

"Where on earth did you get out of here!"

Looking at the mutant again, Lu Xuan discovered that this guy was actually wearing the same police uniform as Qing Haichuan.

"Are you Brother Hai's colleague again?"

I heard Brother Hai say that he has a total of eighteen colleagues here. Liu Mengjun and Xiaoliuzi are his people, while the others were specially transferred from a certain army by the mayor. They were on the fourth and third floors.

After killing one, minus the five killed by Qing Haichuan in Hall 4, there are eight more mutants of this level or higher in this building? Is the silver mutant seen on the second floor one of these eight?

One of the individuals?

How did this guy appear here? Lu Xuan was murmuring in his heart. While thinking about it, he started to dig out the spirit beads from this unlucky guy.

Not long after, a blue spirit bead was held in Lu Xuan's hand.

Wiping it and kicking it into his arms, Lu Xuan walked into the lounge where the zombie just rushed out.

"Could it be that there is some secret passage in this lounge?"

With the light of the flashlight, Lu Xuan began to look around.

There were two couches, four single sofas, a water dispenser, two coffee tables, a refrigerator, and some miscellaneous items. Other than these, Lu Xuan did not see anything suspicious.

"Damn it, have I read too many detective novels?"

After glancing around again, Lu Xuan fell down on the sofa in disappointment, and decided to give up the search for the secret room.

"I wipe, what is that?"

Just as he was lying leisurely on the long sofa and decided to take a rest, Lu Xuan was surprised to find that at his feet, the refrigerator next to the sofa seemed to have something hanging on the wall.

Lu Xuan jumped up from the sofa in shock, quickly came to the refrigerator, and then pushed him to one side forcefully.

As the refrigerator was removed, Lu Xuan discovered that there was a painting hanging directly in front of his face on the wall.

"Painting? What the hell is this mud horse!"

Looking at the slightly abstract oil painting of sunrise over the sea on the wall, Lu Xuan felt an inexplicable sense of dissonance.

Touching the oil painting with his hand, Lu Xuan suddenly felt that the feel of one place under his hand was slightly different from other places.

Gently pressing down with his hand, Lu Xuan only heard the sound of the amplifier running, and then he heard a strange noise coming from the wall behind him.

Shining his flashlight behind him, Lu Xuan suddenly discovered that there was a secret door on the wall directly opposite him.

"Modern oil paintings, ancient mechanisms, mysterious secret doors, and the sudden appearance of the mayor's bodyguard?"

No matter how you look at it, this is a strange and very inconsistent combination.

Lu Xuan walked to the secret door with a puzzled look on his face, and bravely looked inside.

What appeared in front of him was a downward staircase. He walked into the secret passage with a flashlight. Lu Xuan walked straight down the stairs. There were no other abnormalities along the way. It was just that the stairs were surprisingly long and curved repeatedly.

After twisting and turning several times, Lu Xuan finally reached the stairs.

Looking with the help of a flashlight, Lu Xuan found a thick metal door on the wall at the corner at the end of the stairs.

"Huh? What kind of symbol is this? Why does it look familiar?"

Looking at the flame-shaped symbol on the metal door, Lu Xuan couldn't help but frown.

But after thinking about it for a long time, Lu Xuan still couldn't remember where he had seen it.

Pushing the door with his hand, Lu Xuan found that the door had not moved at all. Looking at the door again, Lu Xuan found that there seemed to be something similar to a keyhole embedded in the wall.

"Locked? Why is there such a thing in my school's library? Is there some secret hidden in this school?"

Recalling the mutants with medical value that appeared inexplicably in the library and the always weird weather, Lu Xuan couldn't help but frown again.

"It seems I have time to find Brother Qing, an expert in unlocking, to come here and take a look."

After scanning for another week, he didn't find anything else worth noting. After glancing at his watch, Lu Xuan stepped on the steps and walked up.

After going up the stairs for five minutes, Lu Xuan finally returned to the entrance of the secret passage. But just when Lu Xuan wanted to go out, he discovered that the entrance to the secret passage had been closed when he entered.

"Damn it! This is terrible! You shouldn't have come in!"

Lu Xuan slammed the closed secret passage with his hand and said with some regret.
Chapter completed!