Before he knew it, Li Feng had already found no clues until he opened the doors on the second floor.

The lost Li Feng was about to return to the first floor to see how his teammates were searching for, but suddenly he heard a call for help.

"Help, Maple Team"

"Save...Save me"

Li Feng was shocked and walked downstairs in two steps, and went to the first floor to look for the figures of his teammates.

When we arrived at the corridor on the first floor, all of our teammates were there, but they were all lying on the ground, looking very weak.

"What's wrong, what happened?"

Li Feng walked quickly to Du Yueyu and asked caringly.

Du Yueyu opened her mouth and slowly said something that made Li Feng almost glar out of her eyes.

“It’s so…stinky….”

The weakly said that these words made Li Feng speechless.

I felt helpless in my heart, and some people couldn't help but feel handsome, but I had to admit that this was indeed a very serious problem.

Because I didn't feel that I was wearing a gas mask, but as I opened so many rooms, and the team members below opened all the rooms on the first floor, all the odors that were originally relatively closed were released, and in an instant, the entire corridor was filled with an unbearable rotten odor.

Being stinked is not just a joke. When the stinking reaches a certain level, it will indeed cause considerable damage to the human body. Therefore, the odor concentration in the entire room has reached the limit that the human body can bear, and it is seriously eroding everyone's body and mind.

Purification, purification...

With the addition of flashing thoughts, Li Feng threw out ten purifiers in succession, and finally purified the surrounding environment. The odor temporarily subsided, causing the consciousness of the people who were stinking alive to gradually return.

The good times did not last long, and soon the odor spread again. Li Feng knew that it was not easy for the rotten odor in the whole building to disappear. After purifying a small piece by himself, the rest of the place would float again. Only by continuously purifying multiple times can the odor be reduced to an acceptable range of the human body.

After more than ten minutes, after Li Feng's continuous purification, the rotten smell here was finally alleviated. Although it was still unbearable to ordinary people, it did not cause symptoms such as vertigo and shock.

"Don't care, too odor will be harmful to the human body, not because of your psychological factors, but normal physiological factors. If you bring antidotes, you can take some. Although this is not toxic, it is similar in some sense and can play some relief."

Seeing that everyone had woken up and stood up healthily, some people blushed shyly, as if it was a shame to be fainted by the smell. Li Feng smiled indifferently, so people didn't have to care so much.

This is nothing, the key is that there are no discoveries, these are all big problems.

"Have you found any clues? There are basically no effective clues upstairs. Besides the corpses, they are also corpses, which is very regrettable."

Seeing everyone recovering, Li Feng asked with concern. At the same time, he was still a little disappointed because it seemed that his teammates had not found any useful information.

"There is a strange place. Is this considered a clue found?"

On the side, Wang Nuo held his chin with his hands and thought thoughtfully.

"What's strange? Take me over and take a look!"

Hearing Wang Nuo's words, Li Feng immediately became energetic. He didn't have any hope at first, but now it seems that there is still a chance.

"I don't know if this is a clue or how it is laid out. I would like to ask if there is a bathroom upstairs."

Wang Nuo suddenly asked in a daze, which surprised Li Feng.

"There are bathrooms, and every floor has them. It's on the right side of the deepest part of the corridor, and it's cleaned well inside."

I don’t know why Wang Nuo suddenly asked this, but Li Feng just replied.

At the same time, recalling the situation upstairs, the bathroom is opposite the security room on the even floor. This special material is a soft cloth with better airtightness as a door curtain.

Not only even floors, each floor has a bathroom in the same location. Li Feng also went in and took a look, but there was nothing special inside. If you had to say something special, it was that the bathroom was much cleaner than in the dormitory, and at least there was no rotten smell.

"I don't know if I'm suspicious. Xiaofeng, come with me to see the bathroom on the first floor."

Wang Nuo thought for a while, probably didn't know how to explain it, or was afraid that the abnormality he found was just thinking too much, so he made others laugh at him. So he didn't say it out, but asked Li Feng to go over and take a look in person.

Li Feng nodded and walked directly to the bathroom on the first floor. All the team members followed him. They had seen this bathroom, but they did not find any heresy like Wang Nuo.

When I came to the front of the bathroom on the first floor, it looked no different from the ones upstairs. Li Feng had no doubts, and nothing was as good as what he saw with his eyes.

He walked in gently and went straight to the man's side. He looked at it suddenly and it was still exactly the same as the one above. But a few seconds later, Li Feng suddenly realized something was wrong.

"Is this bathroom a little shallow?"

Li Feng murmured to himself thoughtfully.

"Yes, I've measured it. Every part of the dormitory outside is ten steps deep, but this bathroom is only six steps deep. I was wondering why it is so much shallower than the dormitory next door. Since it is all built, it shouldn't be built enough. But this idea is always a bit nervous, so I'm not sure, and I want Xiaofeng to take a look."

Wang Nuo's explanation made the people around him understand what he was thinking. Indeed, if he said this for no reason, most people would definitely sneer and reply to the previous sentence. Because how deep the bathroom is built is, what does it have to do with you.

But these careful considerations can reveal some tricks. As Wang Nuo said, since it can be built wider, why is it smaller? It all covers the same area, so the more you make full use of the better.

In fact, Wang Nuo’s guess was not wrong at all, and even Li Feng was a little impressed. After all, he had played with Wang Nuo for one or two games before, and he was a person with no bad intelligence and physics.

Now Wang Nuo’s guess is indeed correct, and Li Feng also found the clues. If you remember correctly, there are eight or nine of the bathrooms upstairs who just squatted. If you can’t remember it clearly, there are still too many more than the five in front of you.

If so, there will be something tricky.

"Brother Wang Nuo, it's great. Your discovery is very important. The squats here are far less than the upper floors. I don't need to say that I must understand why. There should be switches around to open the hidden secrets. Forget it, don't bother, I'll explode directly. Everyone retreat, don't be hurt by me."

Li Feng said, and had already walked forward. He took out most of the clay bombs on his body and completely covered the entire wall deep in the men's bathroom.

After confirming that everyone was away from a certain distance, Li Feng took out the chemical potion that specifically guided the detonation of the clay bomb and dripped it on it. Then he ran away quickly and waited quietly for more than ten seconds.

With a bang, the sound was not too loud, but it was very powerful. The entire wall was blown to pieces, revealing a layer of iron sheet inside. This layer of iron sheet was also blown into pieces, and some holes could be seen, but they did not collapse completely.

Li Feng was secretly happy. This was clearly a secret door. As long as he found the mechanism, he could open it, but he was too lazy to take the regular route.

I used the same trick again and used all the remaining clay bombs to spread and fill up with a hole in the iron sheet. I continued to detonate. Under another heavy explosion, the iron sheet in front of me still broke a large hole with a diameter of more than one meter.

Everyone behind him was surprised, but they dared not move without Li Feng's order.

Li Feng slowly walked to the entrance of the cave, and it was pitch black and could not see clearly. He took out the fluorescent stone and the situation inside was in his eyes.

There is a platform not spacious and about two meters long in front of it, connected to the women's bathroom next door. A staircase extends out in the middle of this platform, spreading downwards in windingly.

"This should be a refuge, with roads leading down there"

Seeing this scene, Li Feng couldn't help but say in surprise.

At the same time, when hearing Li Feng's words, the team members behind couldn't help but cheer. There was nothing more happy than being able to find key clues and make the task progress further.

The team members were happy for half a minute, and Li Feng calmed everyone down. At the same time, he pointed in the hole and signaled that he would take the lead and let the rest of them follow his steps.

The rest of the people agreed, taking advantage of the day's plan, there was still plenty of time today, and everyone entered the narrow stairs in a mighty way.

Li Feng distributed a fluorescent stone to each person to illuminate the dark area. This was also the first time that Li Feng had almost consumed the fluorescent stone in his mission, and was used almost everywhere along the way.

The fluorescent stone itself is not expensive, it has energy but is very weak, and it is time-consuming and labor-intensive to extract. In the blue stars, only adventurers will buy it occasionally. Therefore, this kind of stone is quite cheap. Li Feng usually uses it as a consumable, and throws it away for fixed-point lighting.

Even so, I didn't say which time I consumed it. This time I kept using it with a lot of money, which made a large amount of inventory disappear. However, Li Feng was not worried, but just sighed that there were more supplies to consume. If you can use the items in the application area, it would be worth the money.

This passage is quite dark, but it is not wet compared to the secret tunnel that Li Feng has walked through before. There are many large instruments placed around it. Maybe these instruments are afraid of moisture, but have done some moisture-proof treatments around it.

I don’t know what the surrounding machinery is for, so Li Feng and others just groped down long and there were railings on both sides but no lights. For the sake of safety, they could only walk forward.

After walking for about seven or eight minutes, Li Feng stepped on the thick floor. He had already reached the underground plane, and Li Feng confirmed this way.

"It's not very deep to reach the ground with such a slow speed. Is this a refuge? Let's go down slowly and see if there are any light switches. Since there are electricity on the building above, electricity should be generated here."

Li Feng took a few steps forward, threw out a few fluorescent stones on the ground, and used the primary magic of lighting techniques. He confirmed that there were no other pits around, so that his teammates could feel at ease. It was too dark here now, and he only knew that there were a large number of huge instruments around him, and he didn't know anything other than that.

These machines cause great obstruction of vision. Even if Li Feng uses lighting, he is blocked by these instruments and cannot see the deep situation clearly.

"Don't be too dispersed. There are probably indigenous people here. We don't know what their thoughts are, whether they are enemies or friends, and it is very likely that our enemies will be made. Now that we cause such a big noise, it will inevitably arouse their vigilance and may hide in the dark and attack."

When his teammates were dispersed to find the lighting system switch, Li Feng couldn't help but remind him. If these people really identified themselves and others as enemies, it would be quite dangerous in this dark and hiding environment.

Only after Li Feng's reminder did everyone notice the danger. Two or three people gathered together, and they could even call for help if there was any accident. They believed that with Li Feng's healing spell, as long as they were not dead, they could still bring their lives back.

After a long search, I finally heard the voice of a team member, "I found the switch!"

Everyone immediately walked towards the place where the sound came out, but a basin of cold water was poured on by the sound of "Hey, why is there no electricity?"

Li Feng arrived and found that it was an obvious switch, but no matter how he turned it, there was no movement.

"Does anyone understand circuits? Although they are not the same civilization, the circuits should be much different. Let's see why this cannot be opened? Is there something wrong with a certain line?"

If Li Feng didn't care about this in normal times, he would use fluorescent stones to continue on the road. But the underground is too large and there are many things to pile up. The risk factor for moving forward rashly is too high, so I still hope to repair this.

Soon the two of them volunteered to stand up. One of them was a graduate student in the electrical major of a certain university, and the other was a staff member who maintained high-voltage lines. They were both corresponding majors, and Li Feng was also looking forward to it.

The two of them did not disappoint Li Feng's expectations and soon found the cause of the accident. The reason was basically the two of them said it in unison, so the accuracy was basically not escaped.

There is a huge jar behind it, which is a power storage device, and the underground space is all operated through this electric shock device. Now this power storage device is obviously deliberately turned off, which means that the power transmitted from above is cut off. This results in the entire underground space without electricity and the natural light will not light up.

At this point, Li Feng became confused again, and it turned out to be the power supply that was actively cut off. The way they generated electricity must be greatly reduced with the destruction of most humans. It is reasonable to stop electricity use somewhere. However, stopping electricity use here is a little different from Li Feng's previous guess.

If this is a refuge, then this place must be the place where electricity is most needed. Now even if you are willing to supply the electricity from the above research institute and are unwilling to divide the electricity from the underground, then your previous guess may be completely wrong.

"If I release electricity to this power storage device, can I start it up?"

Shaking his head, Li Feng didn't think about this for the time being. Since he came here, he still needed to investigate here. He could manipulate electrical elements normally, so he asked questions to the two professionals.

"Hold on"

The professional said, cutting off a huge cable somewhere, then peeling off the huge wire inside. He took out one of them and handed it over to Li Feng.

"Just generate electricity toward this."

The two of them then answered and asked Li Feng nodded, immediately holding the wire, directly generating a large amount of electricity in their hands.

The moment it came out, the lights in the room finally became bright.
Chapter completed!