Liu Rumei and I chatted all the way about this picture, and came to the conclusion that this is the case.

If this is a map, what do the lines on it represent? Rivers or roads? First of all, we ruled out the possibility of a river, because although the lines on it are curved, they crisscross into a network, and in reality, no river should grow like this. Secondly, if it is a road, it is definitely not the current road, it is more like a criss-crossing path on the mountain, or a winding road in the primeval forest.

But if it's a road, it seems that the meaning of the existence of this picture is not much, you must know that the road is stepped on by people, and the changes of the road over the past thousands of years are too great, even the mountain road that few people have walked cannot withstand the changes of thousands of years.

I pondered for a long time, and suddenly thought of another possibility, and said to Liu Rumei: "Xiaoliu, could this picture be some kind of underground labyrinth?" ”

"Underground labyrinth?" Liu Rumei probably felt that there was some truth in this statement, and hurriedly took out the photo from her backpack and looked at it carefully. After a while, she said, "It's not like a labyrinth, could it be a cave?" ”

"Oh?" Listening to her casual remark, I thought for a moment and said, "It's normal for caves to twist and turn, but they don't intersect into a net, right?" ”

"Hmm." Liu Rumei was also thinking, she stared at the lines on the photo for a long time, and suddenly seemed to remember something, took out a notebook from her backpack, opened it and looked at it carefully.

"What's wrong?" I saw that she had a strange expression, so I asked out loud.

"This ......" Liu Ru frowned and stopped, frowning, as if she had discovered something incredible.

I was still driving, so I couldn't be too distracted, so I could only curiously wait for her to figure it out before asking. Finally, when I drove the car into the underground garage of Shanglinyuan, the light in the car dimmed, and Liu Rumei finally put down the notebook and photos in her hand.

As I parked the car, I asked, "Koyanagi, did you find anything?" ”

"Hmm." Liu Ru frowned, casually put the photo in the notebook, and then raised the notebook and asked, "Do you remember the map I drew by hand in the cave on the lonely mountain?" ”

"Of course I do." I nodded, I remember this incident deeply, when we couldn't find a way out, Liu Rumei leaned on the compass and simply drew a map of the cave in his notebook.

"I just compared it, and there is a line in the pattern in this photo that is exactly the same as my hand-drawn map." Although Liu Rumei's tone was calm, it was very shocking to me.

"Could it be a coincidence?" The car had stopped and turned off, and the lights in the car turned on automatically, so I asked while unbuckling my seat belt.

Liu Rumei shook her head, handed me the notebook in her hand, and said, "You can compare it yourself." ”

"Oh." I took my notebook, flipped it open, took out the photo, and looked at it carefully by the dim light of the lights in the car.

I have to say that Liu Rumei's hand-drawn map is really detailed, and how many steps you take and encounter large-angle bends are clearly marked on it.

Looking at the lines on the photo again, it is disorganized, I can't figure it out at all, it looks like a mess, and I don't know how Liu Rumei can see that the two are consistent.

"Look here." Liu Rumei pointed to a zigzag line on the photo and said, "This is it." ”

"Is there one of these?" I looked at the line carefully, it was one of the messes, and I didn't know how Liu Rumei saw it, if it were me, I wouldn't be able to connect the two. But when I compared the two, I was shocked by the similarity, although Liu Rumei's hand-drawn map is more detailed, but the overall two are the same.

"Do you see that?" Liu Rumei asked on the side.

"Hmm." I nodded, but looking at the messy lines, I offered a different opinion: "Could it be a coincidence?" You see the lines are jumble, and the cave we're walking in doesn't have so many forks in the road. ”

"I've thought about this before." Liu Rumei pointed to the photo and said, "I think this picture just flattens the three-dimensional cave." ”

I can understand what she said, although the three-dimensional cave is messy, it will not intersect because of the staggered space, but if you want to express it with a two-dimensional map, it will be like this in the photo. It's like a building, each floor is independent, the building is imagined to be transparent, and then when you look down from above, each layer is superimposed and intertwined.

"Let's go, let's go to my company." Liu Rumei continued: "There is software for this over there. ”

"Oh?" I was curious and asked, "What is your company's business?" How can there be software for this? ”

Liu Rumei smiled without saying a word, and got out of the car by herself.

Walk from Shanglin Yuan to the pedestrian street, and cross the pedestrian street to her company. It's an office building, and the company is located on the 26th floor of this building, and it wasn't until I joined the office that I realized that it was a company specializing in architectural design.

I asked, "You work here every day?" ”

Liu Rumei replied: "No, this is just a subsidiary, and it will come and go around occasionally." ”

"Uh......"

Such a big company is still a subsidiary, although it is known that the Liu Group is strong, but I am still a little surprised to hear her say this.

"Mr. Liu, why are you here?" When a leader-like person saw us, he hurriedly greeted: "Come, come to the office and sit." ”

"Manager He, I just came here for some personal matters, so I took the liberty to disturb it." Liu Rumei said very politely.

"Mr. Liu, you are polite, how can you disturb the company when you come to the company......" This Manager He should be the manager in charge here, and he politely let us into the general manager's office.

After sitting down, Liu Rumei handed over the photo and said, "Manager He, see if this photo can be restored to a three-dimensional map." ”

After Manager He took the photo, he looked at it carefully, and then frowned and asked, "What is this?" ”

Liu Rumei did not hide it either, and said: "A two-dimensional overlay of the underground cave. ”

"Oh." Manager He nodded and didn't delve further.

Liu Rumei continued: "There is a line above that is the known starting part, and then the others are not very clear. ”

Manager He continued to nod and said, "That's okay, as long as you know where the beginning is, you can basically figure it out later, it's just ......"

Seeing that he wanted to speak and stopped, Liu Rumei asked, "Just what?" ”

"I just don't know the height difference between caves, so there may be a gap between the 3D model and the actual one." Manager He said very seriously.

"Oh." Liu Rumei nodded after hearing this, and said, "That's okay, as long as you know the approximate model." ”

Manager He said: "Mr. Liu, if it's just like this, you wait here for a while, and I can handle it." ”

"Uh-huh."

Manager He should be from a business background, but he turned on the computer and quickly unfolded a software, and then scanned the photo into the computer, and after a series of operations, the pattern on the photo has been completely mapped on the software.

Liu Rumei pointed beside him and pointed out to him the cave that he had drawn by hand. Manager He raised the cave slightly higher on the software, and then followed the line down little by little, raising the height as he went. Gradually, the image on the computer screen changed, and if you look down from the top, it is still a mess, but as the angle changes, a three-dimensional image is presented.

Indeed, as Manager He said, this three-dimensional image was completed quickly. Liu Rumei took out a tablet from her bag, asked Manager He to pass a copy to herself, and then told Manager He not to tell outsiders about this matter. Manager He is very sensible, and after copying Liu Rumei's tablet, he took the initiative to delete the information he had just completed on his computer, and then handed the tablet and photos back to Liu Rumei.

After saying goodbye to Manager He, Liu Rumei and I returned to the antique shop. I was full of doubts and asked, "Koyanagi, what software did you just use?" I think it's going to be complicated, how can it be so easy to get it done? ”

Liu Rumei said with a smile: "What company that designs buildings doesn't design internal plumbing?" ”

Hearing her say this, I suddenly realized that the cave and the pipeline are actually the same, which is why Manager He is so familiar with the road. Although I understand this, I still sigh a little, sure enough, I still have a specialization in the art industry, if I get this photo, then I guess I can't think of how to make a three-dimensional picture.

Liu Rumei's tablet has a corresponding software that can open the stereoscopic image, and at this time she has already expanded the three-dimensional map of the cave and carefully studied it against the hand-drawn map in her notebook.

"Ding Ding ......"

Liu Rumei's mobile phone rang, she glanced at it, and then picked it up.

"Hey...... Uncle Shi ...... What the...... Oh...... I got ......."

After Liu Rumei hung up the phone, I hurriedly asked, "Captain Shi called?" ”

Liu Rumei nodded: "Hmm." ”

I then asked, "Is there any news from the fat man?" ”

Liu Rumei shook her head and said, "No, it's Wen Xianbao who has news." ”

"Oh." Although this is good news, I am still a little disappointed, and I secretly wonder where the fat guy has gone? Inexplicably sent back a phone, and then disappeared again.

Liu Rumei continued: "Uncle Shi said that thanks to Wang Bo's mobile phone, the criminal investigation work has progressed, and Qiao Er's whereabouts are still unknown, but the excavation site on the lonely mountain has been controlled, but those people have not been caught yet." ”

I sighed, "It's fast." ”

Liu Ru raised her eyebrows and said, "Can you not be fast?" Director Wen is still there every day. ”

Hearing her say this, I remembered that Director Wenhui came, this old man was guarding the Public Security Bureau these days, and he already knew that Qiao Er's gang did it, but he couldn't do anything about it, so he could only put pressure on the local government, and the local public security system came forward to rescue Wen Xianbao, so as to avoid Qiao Er's backstage.

"Hey! Besides, we can't be idle. Liu Rumei sighed and said, "Uncle Shi asked us to go over again." ”