As soon as I rushed to the door, I was in a hurry, in order to prevent the ghosts of the β District from rushing into the main building, I specially locked the door, this time it was really too late to regret it.

Just when I secretly regretted it in my heart, the headless corpse did not chase after me, I was surprised, and when I looked back, I saw that the headless corpse was standing motionless in place, and a steady stream of black gas gathered from all around, all of which were submerged into the headless corpse, and at the same time, the headless corpse began to exude a terrible aura that made my heart palpitate.

Seeing the astonishing changes on the body of the headless corpse, I suddenly thought of the situation when the corpses in the ancient town of Suoming worshiped the moon, and my face couldn't help but change, I never thought that the headless corpse would be able to absorb the yin qi in the experimental building to strengthen its own body, if it finished absorbing the yin qi and freed up its hands, we would be finished.

Thinking of this, I immediately put Sydney down and quickly pulled out the key to the Yongdao door......

Almost as soon as I opened the door, the black qi surrounding the headless corpse suddenly dissipated, and the headless corpse, which had been swallowed up by the curse of Doom, suddenly stood up and turned to us slowly.

Seeing this, my heart jumped, and I didn't dare to hesitate at all, so I grabbed Sydney and rushed into the door.

As soon as we entered the door, before we could catch our breath, the figure of the headless corpse appeared outside the door without warning, and almost touched our face through the door.

Even I was half scared to death by the sudden sight, but thankfully, the headless corpse didn't rush through the door in the end, which made me even more sure of my previous suspicions.

It seems that this experimental building is divided into several areas, each area has a powerful ghost, they are the overlords of their respective regions, and the scope of these ghosts' activities is limited to their own territory, the previous ghosts, flame monsters and stone monsters are like this, so it seems that the one who occupies the central administrative building should be the headless corpse.

Thinking about it, I suddenly felt a thrill, remembering that the ghost in the β area had not been killed by me, and hurriedly opened the camera to look around.

I was soon relieved that there was no sign of ghosts in the corridor.

At this time, Sydney had also come to her senses, and when she found that the headless corpse had not chased after her, her face recovered slightly.

I remembered the thrilling scene just now, and I was a little scared, and subconsciously touched my neck, but there was no wound, which was often relieved, but when I thought of Sydney, I was a little worried, and hurriedly asked her: "Are you okay?" Did you get scratched just now? ”

Although Sydney has recovered from the fear just now, her pretty face is still pale, she shook her head, smiled at me reluctantly, and said that she was fine, I was still a little worried, after all, corpse poison is not a joke, so I personally checked her neck, there was indeed no wound, and I was completely relaxed.

The ghost did not appear immediately in the corridor, which means that it probably hasn't noticed that we have entered the β area yet, so I naturally won't risk being found out and go out immediately, just in time, we can take a break in the corridor and think about the next step at the same time.

I sat Sydney against the wall, then looked at the headless corpse still blocking the door, and felt a little uncomfortable, so I closed the door again.

With the previous lesson, this time I didn't dare to lock the door again, and after the door was closed, I no longer had to face the maddening headless corpse, my mood was much better, and my thinking was clearer.

I thought about it, but I still felt that I had to find the Apocalypse first, after all, no one knew how many evil things were still in this experimental building, and it was too dangerous to have nothing to defend myself from, but how could I find the Apocalypse?

It was a real headache, not to mention the ghost, the knee-deep vines alone were enough for me to toss, and unless there was a wide area of lighting, it would be difficult to find the wooden sword in the pile of vines and ruins.

However, in this building that has been abandoned for more than ten years, the original power supply system must have been out of use a long time ago, where is the lighting?

Taking a step back, even if the school hadn't cut off the power system in the laboratory building, more than ten years later, the original lighting system would have been scrapped, so where would I get a light bulb to replace it?

Just when I was feeling irritated about these questions, Sydney seemed to see my depression and suddenly asked me what was wrong. I sighed and briefed her on the problem I was facing.

In fact, I didn't think she could give me any good advice, the reason why I told her was completely to relieve the depression in my heart, but what I never expected was that Sydney's next words made me so excited that I almost hugged her and kissed her.

"Did you say the lighting in the laboratory building? I don't know anything else, but the lighting around the four main building areas should be usable! ”

"What do you say, there's really a lighting system here?" I resisted the excitement in my heart and asked in a trembling voice.

Sydney nodded affirmatively, and then told me that she had actually been working at the school and using her spare time to earn tuition. Not long ago, when a student disappeared, the school asked her and several other students who were also working at the school to move a few boxes of bright light bulbs to the experimental building, although they did not enter the experimental building, but they saw many police officers and electricians in overalls outside the experimental building, and it was based on this that she judged that the lighting system had been reinstalled in the experimental building.

Listening to her say this, I immediately understood, my heart said yes, the Aβ area of the laboratory building is a hollow structure, the central area of such a structure is not able to light, even if it is daytime, the hall is still dark, since the security department and police officers want to search for missing students, no lighting system is definitely not possible, if you rely on flashlights and other lighting equipment, you will inevitably miss a lot of clues in details.

If the power supply system of the laboratory building itself is not broken, it is not a hassle to reinstall a few light bulbs.

Thinking of this, I suddenly became excited, and hurriedly said to Sydney: "Great, Sydney, you are really helpful this time, haha." Okay, now we just need to find the switch on the lighting in the hall or on the floor, as long as there is light, I can find the magic weapon to ward off evil spirits, and then we won't have to be afraid of all this mess! "Three-two

I said excitedly, and Sydney smiled happily, although her face was still pale.

Not long after we made up our minds, suddenly, a woman's giggling sound came into my ears, and I subconsciously turned my head to look, and was immediately startled, only to see that the ghost of the β area had drifted into the corridor at some point, and arrived less than three meters away from us.

Sydney also screamed and jumped up at this time, hid behind me, grabbed the corner of my clothes, I secretly complained in my heart, and hurriedly pushed Sydney away, while leading the ghost in the opposite direction to her, while shouting at her: "Hurry up, go find the switch, ...... quickly"

Before the last quick word could be spoken, the ghost had already pressed up, and at this time I had been forced into a corner, and there was no way out, and I felt as if I was covered by a black veil in front of me, and at the same time, the cold breath penetrated into the bone marrow from the outside in, and finally it seemed to freeze my soul, making me lose consciousness all of a sudden.

At this critical juncture, I gritted my teeth violently, communicated with Yuan Qi in my body again, and burst out the sound of the word 'crack', and the rolling sound wave suddenly sounded like thunder, although it still did not have the effect of affecting time and space when the old turtle shouted the crack word, but the mantra prompted by Yuan Qi still blasted the ghost backwards out, and at the same time let out a painful and terrible howl.

Once and twice in a row, I used Yuan Qi to induce the mantra that there was no way at all, the Yuan Qi in my body was almost exhausted, and my legs were weak, if the ghost invaded my body again, I would only have to wait for death, after thinking about this, I gritted my teeth, and ran out of the Yongdao while the ghost had not recovered.

I didn't stop, I rushed up the spiral ladder without hesitation, and after rushing to the end of the spiral ladder on the third floor in one breath, my body could no longer support it, and I suddenly went limp.

There are only two steps left, only two steps away from being able to climb into the area of the fourth floor, but at this time, the two steps are like a moat for me, insurmountable, I can't move at all, at the same time, there is a ghostly cry behind me again, only this time the giggling laughter has turned into an extremely resentful, hateful scream.

There was only one thought left in my mind, and that was that I was finished!

Just as I was waiting for death, in complete despair, a pair of cold, cold hands with no temperature suddenly grabbed my arm, pulled me violently, and pulled me into the spiral staircase on the fourth floor before the ghost behind me could grab me.

The ghost was unwilling to open his teeth and claws at me, but he didn't dare to cross the boundary between the third and fourth floors, and when I saw this, I was moved to almost cry, and tried to turn my head to look at the person who saved me, but found that it was Sydney who escaped from the road first.

My heart suddenly relaxed, and I said thank you, Sydney smiled faintly at me, didn't say anything, just looked back at the angry ghost on the spiral staircase on the third floor.

I don't know if it's my delusion, the moment Sydney turned around, I saw her show a contemptuous look at the ghost, of course, this may also be because of the light, after all, we only have a mobile phone lighting, and the mobile phone light is not shining on Sydney at this time.

The situation on the fourth floor is not clear, but judging by the fact that the ghost is unable to cross the line and go up to the third floor, it is likely that it is the same as Area A.

Just in case, Sydney dragged me to an unlocked classroom on the fourth floor, where I found out it was an office.

Because there was a precedent, I first asked Sydney to check the office with her camera and make sure there was nothing else in it, and she carried me to the couch and let me rest.

I felt a little ashamed to see that Sydney was exhausted and out of breath after all of this.

This time I really didn't expect that after the first use of the Apocalypse was drained of the Yuan Qi in my body, I already had some experience in the use of the Yuan Qi, as long as I didn't go through all the Qi methods of a single complete sword mark according to the image of the sword mark in my mind, there would be no situation where the Yuan Qi was drained, and when I used the Yuan Qi alone to trigger the Apocalypse, I could even slash dozens of times in a row. But I never thought that I would be so unbearable to use Yuan Qi alone without the Apocalypse as a medium, just two loud roars, and I actually consumed all the Yuan Qi, it seems that the Taoist priest is right, the control of the innate Yuan Qi is really not so easy.

After that, I have been resting so that the Yuan Qi in my body can recover as soon as possible. In the meantime, perhaps because the waiting time was too boring, Sydney took a break and became a little idle, and began to look left and right, looking around for some of the documents left in the office.

It didn't take long for Sydney's alarmed voice to catch my attention.

At this time, I have been resting for half an hour, although Yuan Qi has not recovered much, but his physical strength has improved, at least his normal actions are no problem.

I saw that she was looking at something at the desk not far away, and walked over, and the little girl was a little fascinated, and she didn't notice my approach for a while, and was still looking intently at a document in her hand.

I didn't bother her, but curiously turned my eyes to the document she was looking at, just a simple glance, my face changed, what Sydney was looking at turned out to be a formation description called "Eight Gates Binding Ghost Array".

If it was just a formation description, it wouldn't surprise me so much, but there was a warning in this formation description, and it was this warning that made my heart beat wildly, and at this moment, I even had a feeling that I already knew the truth about the laboratory building.

The warning goes something like this, a certain professor at L University has been working on the human soul, and more than ten years ago, with the support of a mysterious force, this professor started a study of supernatural soul bodies. In the course of his research, the professor succeeded in deciphering the code of separation between the body and the soul, and in order to verify the results of this research, the professor violated the rules by using a living person as an experimental subject, and as a result, the experiment malfunctioned and a devil was created.

The devil killed all the people who participated in the experiment, and what is even more terrifying is that the souls of those who were killed by the devil were all trapped in this experimental building, becoming lonely ghosts who could not be reincarnated.

Although this bad incident was suppressed by the school, the undead in the laboratory building could not rest in peace, so the school invited a famous Taoist priest named Master Tiantong to exorcise ghosts.

Because the devil was too powerful, this Tiantong master exhausted his mental strength, but he couldn't help the powerful evil spirits in the experimental building, so he used the layout of the experimental building itself to arrange a large array called "Eight Gates to Bind the Ghost Array", and sealed and suppressed the devil along with the eight evil spirits.

Since then, the laboratory building has been completely dusted, but Master Tiantong has always been worried that one day the big array will be broken and the devil will come back, so he left an explanation of the Eight Gates Binding Ghost Formation and a remedy for the loopholes in the formation, which is the document we are looking at now.