Liang Wan placed her hand firmly on the blueprint, a look of joy appearing on her face as she recalled a similar scene from Sherlock Holmes. She remembered reading about how Holmes had measured the exact location of a room. This hidden space must have a window; the hotel was very long with many rooms, and unless someone was very familiar with it, it would be difficult for an ordinary person to notice this detail.

She had to find this room. Liang Wan already had a rough idea in mind. She walked into the corridor, slowly pacing herself, counting her steps as she went. She noticed that even though there was a hidden room between her and the second room, this hidden room was very small, and she couldn’t accurately locate the entrance to it from the corridor.

“Could it be accessed through a window?” she wondered. That was impossible; the hotel’s outer walls were very smooth, and unless a rope was lowered from the roof, it would be impossible to enter through a window.

If it wasn’t through a window or the corridor, could there be an entrance to this hidden room inside the second or third room? Liang Wan returned to her own room and approached the wall near the second room. She touched and began to knock on the wall. The wall was a very simple concrete one, easy to knock on with a heavy echo, clearly not much insulation, but a concrete wall is still a wall; it was solid and could not be entered.

After knocking around the corner, Liang Wan discovered a large embedded wardrobe. She frowned, opened the wardrobe, and pushed against the back panel, feeling something was off.

Stepping inside the wardrobe, she pressed her fingers against the edge of the back panel. With a crack, she found that the panel was loose; a gentle push made it fall away, revealing a small space behind it, which indeed was an unrenovated concrete wall space. It must be a gap between the buildings, a space between the rooms.

Liang Wan stepped inside, and part of the light from her room shone into this space. The light was dim, insufficient to illuminate the small room, and the end of the room was completely dark. She took out her phone to shine a light, but the phone’s beam couldn’t illuminate the whole room, so she had to feel her way along the rough walls.

Eventually, she found a simple light switch. She pressed it, and the light turned on, revealing that the room was only two people wide, long and narrow. On the wall at the end of the room was a window, but there was some device placed on the windowsill.

In the middle of the room was a table stacked with a thick layer of documents and a notebook. Liang Wan confirmed that there was no one in this room.

She walked to the window, realizing that the shadow she had seen earlier must have come through this window. She also noticed that the entire back of the window was painted the same color as the outer wall, but the window itself was made of glass, a complete unit. Inside the window was a semi-transparent wallpaper that matched the color of the outer wall, and behind this wallpaper was a strange projector, which seemed to be remote-controlled.

On the other side of the projector, she found a mobile phone. She opened the phone and discovered that a call had just come in.

It is obvious that this projector is controlled by a mobile phone signal. There is a human-shaped obstruction on the projector lens. When a call comes in, the backlight turns on, projecting the shadow of the entire obstruction onto the window. Because the wallpaper on the back of this window is the same as the exterior wall, during the day, or when the projection light is off, it should look exactly like the outside wall from the outside. Others cannot tell that this is a window, and clearly, this design is quite innovative. However, the room itself is very rudimentary.

She thought for a moment and called the number back, but all she got was a disconnected tone. It seems that this number and this phone were only meant to be used once. Since that’s the case, she decided not to be polite. She tucked the phone into her pocket and turned to look at the folder on the table. When she opened it, Liang Wan saw a large number of design blueprints.

This is a type of professional drawing paper that is supposed to be dense and tough, but now it has yellowed and feels greasy, looking very soft, which suggests it has been stored for a very long time and has suffered significant moisture damage. Upon closer inspection, some of the blueprints seemed to be in a chaotic state, merely sealed inside plastic.

Liang Wan counted; there were as many as twenty-seven sheets. On the back of the last blueprint was a half A4-sized note. All the blueprints had strange stains resembling urine, but the edges of these stains were very clear. She sniffed and discovered they might be bloodstains.

The bloodstains appeared to be sprayed, looking quite frightening, but there were no black spots, indicating that someone had attempted to wipe them but had not cleaned thoroughly. This already says a lot; these documents must have been salvaged by Jie Yuchen from somewhere. With so much blood, there must be quite a story behind it.

Liang Wan carefully picked it up and saw written inside: “Your next step is to memorize all the information on these blueprints. Remember, the clearer you remember, the greater the help to them, and the better their chances of survival. If you act recklessly, this child may lose their life. After memorizing everything, burn all the materials in this room. Remember, these items must not leave this room.”

Liang Wan felt perplexed. How could she do anything without leaving this room, especially when there was no one around? These are all pieces of evidence; she wouldn’t listen to that. She noticed that the blueprint was numbered 033, with the label “Gulongjing Station No. 1.” She recalled what Li Cuo had told her and suddenly realized that the connections between them seemed very complex. This blueprint appeared to be for a building constructed in the desert area of Gulongjing. The style of the blueprints and the markings seemed to be from the 1980s.

What kind of building could this be? She sat down and began to browse through the materials.

In just half an hour, she had finished reading everything. Her first reaction was anger; not to mention memorizing these blueprints, she might not even be able to replicate one accurately. Her second reaction was confusion, as she noticed a strange phenomenon in these blueprints. All the blueprints depicted a designer, and each designer had an age.

“All these designers or painters are very young, all only in their teens. These drawings were made by children; at least, at the time they created them, these designers were children. Why?”