Just as I was looking down in contemplation, a person sat down a short distance away. When I looked up, it was an old man with gray hair.

When the old man sat down, he seemed to be talking to himself, and as if he was talking to me, who was closest to him. "This place is so beautiful!"

"Yes." I accosted politely.

"When I was a kid, it was just a six-story dilapidated office building, but now it's completely changed." The old man was a little embarrassed.

"Oh, it turns out that this used to be an office building, and this is the first time I've heard of it."

"I lived around here when I was a kid, and that's when I was ...... At the age of seven or eight, the grandfather of one of our little friends kept a vigil here, so we often came here to play at night. At that time, there were six floors above and three floors below, which was very large, and we often came to explore......"

"What?! There are also three underground floors here?! "I was as shocked as swallowing a mosquito in my mouth.

"Not really! Later, there was a flood here, and in order to avoid damage to the building structure above, the three-story building under the ground was sealed with cement. Later, a large-scale geological structure survey found that the building structure had substantial problems, and coupled with the disrepair, it was a dangerous building that was prone to collapse accidents, so all the staff were evacuated. Not only did people walk away empty, but they also did not forget to mark the big sign with the word "danger" in a circle everywhere. Soon my parents found out and they didn't let us come here to play. ”

"Oh, thank you! Thank you! You've done us a great favor. "I was ecstatic as if I had been given a mountain of gold.

"Really?!" Although the old man didn't understand the meaning of my words, he still smiled.

I didn't bother to listen to the old man anymore, so I ran to Raymond, the head of the Security Department, and told me everything I had said.

"What?! What did you say?! There is even a structure with three underground floors! Raymond and Lady Merlin, who followed him closely, were taken aback.

William Hughes, the captain of the guard, also came over, keenly aware of what had just happened here.

Raymond approached William Hughes, who had already approached, and he shouted indignantly, "Why didn't you tell us that this building had three basement floors in the past?!" ”

"What did you say?!" William Hughes was a little confused, "What other underground layers are there here!" Stop hearsay, it's just nothing! ”

"Yes, indeed." A cleaner with a broom in his hand muttered, "The old people who used to live here know that." ”

"Nonsense!" William Hughes was obviously still arguing, but not so loudly.

"I'll take you to find it." The old man who had been sitting not far away had slowly paced to us at some point, and his excited appearance seemed to be back to his childhood, and his cloudy eyes instantly lit up.

"Okay." Raymond said gratefully.

"I have to report to my superiors." William Hughes shouted, but none of us seemed to hear it. We walked away from him and followed the old man towards the east side of the building.

The old man led us around the east and then to the south, and at last he stopped, and he looked to the left and right again, and then pointed to a huge painting that rose to the top of the sky and the earth, and said, "I should not be wrong in my impression, the staircase that used to go down to the third basement floor was here. ”

But now it's blocked by brick walls and huge graffiti. This huge oil painting is full of splashed colored ink, and several human-faced monsters that are much taller than real people make up for the uneven oil paint, and the strong and prominent three-dimensional vision on this oil painting is particularly eye-catching.

Looking at this oil painting that was about to come out, everyone looked at each other, not knowing what to do. The old man who led us in the search was already a little tired, and he walked to a nearby chair and sat down. I was the only one who was getting more and more energetic, and I stood up with a determined attitude that surprised even me.

"I'm sure my instincts are right, and this is definitely the starting point for the breakthrough."

Raymond didn't squeak, he just glanced at me, and then turned back to the huge painting. It was clear that he was weighing the pros and cons and strategizing, so we all fell silent.

Suddenly, Raymond's tightly knit brow suddenly brightened, and I concluded that he already had a backbone. Sure enough, due to the urgency of the situation, he made a decision to continue the in-depth investigation despite public opinion, and he could only adopt the method of cutting first and then playing a prelude to the higher-level leaders. Raymond then ordered William Hughes to arrange for a few men to remove the huge painting at once, so as to prepare for the next step of the investigation. But unexpectedly, William Hughes insisted on refusing, and he insisted that he must report to his superiors first.

This made Raymond furious, "The country is facing a crisis, and it will be completely late to act after you have been approved to report and report." Only by grasping the opportunity can we not let the incident expand to the point of being out of control. ”

These words really made William Hughes in a dilemma, and he ran out of ideas. He thought about it and felt that compared to the title of the head of the hall of the Security Affairs Agency, the sesame petty officer he served was not worth mentioning. If you really stab the basket, it is safer to hide under the banner of the Security Affairs Department than to let yourself not be able to keep this black gauze hat first. So he did not hesitate any longer, found five or six workers, climbed the high ladder, and carefully and painstakingly took down the astonishingly large oil painting, rolled it up and put it away.

Now all that is left in front of you is a potholed wall. I stepped forward and carefully touched the wall, which was dotted with a few small inconspicuous cracks, and a few drops of cement mortar that had dried up and solidified abruptly in the corner of the wall. These few small signals made me even more convinced that the wall must have had to be repaired after the building was leaking at the time. Then a few workers picked up their sledgehammers and smashed through the wall in front of us with just a few swings.

Looking through the large hole in the hewn wall, a small boxy chamber came into view. We stepped through the large hole that had burst to the bottom and entered the Burrow. It's a pitifully small room, estimated to be six or seven square meters in size. The thick dust hid everything that was in it, a table, two chairs, and two large clay bowls. There was nothing else, and the room couldn't be more shabby, and soon everyone's curiosity was annihilated, and everyone was disappointed.

I'm the only one who still takes the trouble to look around, for fear of missing a single insignificant detail. It's been a long time since this house has been unattended, and it can be seen from the thick dust, but there are no traces of cobwebs or rat activity in this room, which is strange?! It seems that this is a fairly tightly sealed secret room.

I continued to explore, and upon closer investigation, I found that the wall on the opposite side of the gap we had chiseled looked cleaner and less bumpy than the others. I reached out and touched it, and immediately a little crumb fell off. I touched it again, and more crumbs fell. This is really unusual, and there are few other walls in the hut that do not have such prominent debris dropping. Several other people in the house also noticed this special place. As they walked over, they raised their hands to caress the wall, and the dross became even worse.

After a while, some clues were revealed on the wall that had been falling slag. Be...... It's a door! We were all pleasantly surprised, and we rubbed the wall harder. In just a few moments, the gate took off its outermost gray coat, and the shadow revealed its true face.

Finally a new harvest! We all high-fived each other in celebration, but what happened next was something we didn't expect, and a few people couldn't push the door even if they tried their best. One of the guards brought a large shovel and was bent on smashing the metal gate that stood in front of him. He made a lot of effort, and with a shovel swinging over, he was immediately forced back by the powerful reaction force, and even the man with a shovel was thrown out a meter away.

Everyone was at a loss. I thought to myself: it seems that simply pushing this gate with great force will not work at all, and it is only possible to open this door with skill. But where does the ingenuity of these four or two thousand pounds come from?! I couldn't help but bow my head and ponder.

At this time, Ms. Merlin, Chief of the International Criminal Investigation Division of the Department of Security, was staring intently at the roof, and her action caught my attention, and I followed her gaze upward. Although she was twenty centimeters taller than I was, and her view of the heights was certainly much clearer than mine, I gathered my gaze and caught a glimpse of four tiny rivets on the roof.

It's a pretty weird thing indeed! Why are there four very unusual rivets on the roof of the room, and they are so ordered?!

Incredible!