Hearing this slight sound, I hurriedly bounced off the ground. Looking at the wooden shelf with bright eyes:, it turns out that this thing is tm slippery!

I quickly moved my muscles and bones, put my hands on the right side of the wooden shelf, and pushed hard, and the wooden shelf suddenly heard a "crunch" sound, and moved a little to the left.

I immediately came to my senses and began to push the wooden shelves hard. With more and more frequent "crunching" sounds, I pushed the wooden shelves open a gap one person wide.

The ancient dust regained its lightness at this point, dancing desperately before my eyes. I coughed and waved my hands to dispel the tiny "dancers". Looking through the gap, it was still pitch black inside, and nothing could be seen.

Because of the lesson learned from the last fall through the tunnel of the dormitory building, I didn't go directly into this gap, but turned on the flashlight and shone it inside.

This is a hidden room, through the light of the flashlight, I can't see the whole room, only vaguely see that there seems to be a desk in the room.

But I still looked at the ground carefully, I was really bitten by a snake, and I was afraid of the well rope for ten years! After making sure that there were no stairs down on the ground, I tiptoed into the secret room in the shelf.

When I entered the secret room, I didn't dare to act rashly, and first used a flashlight to shine around: this is a room of about 20 square meters, the whole room is in the shape of a long strip, there is a tall wooden bookshelf on the left side of the room, an iron cabinet on the right side, and in the innermost part of the room is the desk I just saw.

I took a closer look, and there was much more dust here than outside, probably a room that the authorities had not found, and I immediately cheered up, and I felt a little proud in my heart. He took a deep breath and began to search carefully.

I walked over to the bookshelf and found that there was nothing left on it, empty and dusty.

I turned back to the desk in the deepest part of the room.

The desk is dull and yellow, and there is also a thick layer of dust. The desk looked like the old-fashioned desks I'd seen elsewhere – two large drawers horizontally, a small drawer on the right-hand side, and a small cabinet underneath the drawer. I opened the drawers and cabinets in turn, and there was nothing but dust and a few spider cockroaches.

I depressedly closed the drawers and cupboards. I lay on the ground and looked under the table, but it was still empty.

Now only the iron cabinet has not been seen.

I stood up, dusted myself off, and walked over to the iron cabinet.

Walking up to the iron cabinet, I began to take a closer look at it: it was about a man tall, half a meter wide, and rectangular in shape.

The top of the cabinet was rusted, but I could faintly see that it should have been painted gray, but when I looked into the upper right corner of the iron cabinet, I was surprised to find that there seemed to be a few red letters there!

I stood on tiptoe and moved the beam of the flashlight to the red letter, which had almost disappeared from the rust, but I could still see two words vaguely: Ishii.

I didn't care about the dust here, and opened my mouth wide in surprise: Could it be that this is Shiro Ishii's secret office?

Shiro Ishii, commander-in-chief of Unit 731 of the Japanese invasion of China. All the ** dissection and bacteriological experiments here were planned and carried out by him, and this showroom is also his masterpiece, he is an out-and-out demon.

Looking at this iron cabinet, I couldn't help but feel guilty: there shouldn't be any specimens or anything like this?

I shuddered and put my hand on the doorknob, took a deep breath, and tugged hard - this demon did not disappoint me this time, there was a miserable white skeleton hanging in the cabinet!

I sat down on the ground with a "whoosh", as if there were 10,000 ants crawling on my scalp, my brain was blank, and what was even worse was that the skeleton seemed to come to life, "pounced" at me!

I howled like a pig and stepped back desperately, trembling like an electric shock, until the skeleton fell straight from the cabinet and fell to the ground.

I sat there not daring to move, holding my breath and staring at the skeleton with wide eyes. After a few minutes or so, the skeleton was still lying motionless on the ground, and my tense nerves began to relax.

I gasped for air while holding my hands on my chest, holding back a wave of vertigo in my head, and staggered to my feet.

I looked at the skeleton again, and found that it was indeed just an ordinary skeleton of bones, and the bones on its body had become a little yellow due to the weathering of the long time.

I stared at the skeleton as I slowly moved towards the iron cabinet, lest it stand up again and pounce on me with its teeth open.

When they got to the iron cabinet, the skeleton was still lying there. I breathed a sigh of relief, and my heart darkened: the skeleton must have been a dissected Chinese prisoner of war.

I bowed lightly to the skeleton and turned my head to look into the iron cabinet, where hung a pair of dissecting shelves from which the skeleton had just been hung, and behind the dissecting shelf, without the skeleton, was pasted a piece of paper full of lines!

I quickly took off the dissecting rack and gently tore off the piece of paper. The paper has become a faint yellow color due to the invasion of time, and some parts of the paper have been crispy, and it will fall off when the hand touches it. I carefully lifted it up with my hands, and carefully lifted it out of the iron cabinet.

As soon as I "escorted" it out, I immediately grabbed the flashlight and looked at the old piece of paper carefully.

Here's a map.

The drawings outline the shape of the building with a black pen, and the lines inside are very complex, and in some places the lines have been unrealistic for many years. After looking at it for a while, I suddenly realized: this is a full picture of the main building!

I began to quickly scan the map, carefully looking for my location.

I had a rough estimate, and in the innermost part of the left side of the drawing, I found a small square with the name of the house on it in Japanese. I immediately took out my phone and used translation software to translate the Japanese written on the drawing: Exhibited.

It turned out that this was the showroom, and I searched carefully around the showroom to try to find Ishii's secret office.

To my excitement, I actually picked up a treasure this time, although there is no mark on the drawing, but I can clearly see that in the small square representing the showroom, there is a small protruding rectangular square - this should be the illustration of this office.

However, what I didn't expect was that there was a line on the block representing this secret room, leading to another unmarked block!

I looked at the drawing in amazement, my eyes widened and I looked at it carefully, my face was almost glued on the drawing, and after confirming that it was correct, I frowned and scanned the room, and I was worried: although there is a passage, where is the entrance? What is the purpose of the room?

I carefully folded the drawings and slipped them into my jacket pocket. According to the position of the line in my head, I began to search carefully in the house.

The line connected to the innermost part of the chamber - where the desk was located. But I've already searched the desk, and I took out the drawing and looked at it -- but the line on the drawing was actually attached to the wall behind the desk.

After thinking for a while, and finding that there were no clues, I put away the drawings in my hand and hesitantly walked towards the wall behind my desk.

Walking up to the wall, I looked at it carefully, rubbing it back and forth with my hands, but to my disappointment, the whole wall was flat, without a single bump or depression, and there were no marks or cracks or anything like that.

I retreated to my desk, looked at the wall in front of me with a frown, and thought to myself: If I drive an excavator, I will directly smash this broken wall.

I leaned back on my desk and thought about it as I stared at the wall in front of me. Then I just sat down at my desk.

It didn't matter if I sat down, I just felt the desk sink slightly, and a sound of brackets and stones grinding from under the desk!

I jumped off my desk and looked underneath it: a staircase leading to the ground appeared underneath the desk......