In just a few minutes, neither of us made a sound, and Fox Fairy and Wang Yong looked at the two of us looking around, not saying a word.

It wasn't until five minutes later that I walked to the side of the display case, and when I looked up, my eyes suddenly lit up, and I saw a very shallow, very shallow circle-like mark on the wall, and that stain looked very inconspicuous, and if it weren't for my concentration of attention, I wouldn't have noticed it.

The circle is almost transparent, the size of an eighty percent stamp, printed on the wall, and if you don't pay attention to it, you will think it is an ordinary stain and you will not find such a detail.

The moment I saw the circle of marks on the wall, I vaguely guessed an answer in my brain.

I took a step forward, close to the wall, and I let out a soft sigh, and suddenly, the circle-like marks on the wall became more pronounced, and even, along a horizontal line of the wall, more than a dozen similar circles appeared.

"That's ...... so"

"It's the use of suction cup hooks."

I turned my head to find that Yu Wenlong was standing in front of the wall on the other side, just like me.

The two of us looked at each other in the air, and the two of us smiled lightly.

"You think so too, Wenlong." I smiled and looked at Wei Wenlong and said.

"Yes, it shouldn't be wrong, the thief should have brought a lot of large suction cup hooks on his body, he put hooks all over the wall, and then used the hooks to crawl on the wall, and then changed the angle of the camera, after stealing the cultural relics, and returned the same way, and took the hooks away, so ordinary people can't find it.

Ordinary people can't find it at all."

Wei Wenlong speculated, with a bit of affirmation in his tone.

"That's what I thought, too." I nodded. The thief probably connected the hooks with wires and other metal wires, and then he wore a special costume on his body, and he had hooks and loops sewn on the waist, hands, and sides of his thighs. ... I'm afraid the thief was very light and nimble, not like a very tall and strong adult man, otherwise the hook would not have been able to support his weight."

"Hmm." Wei Wenlong gave me a thumbs up, and the corners of his mouth curled up with an appreciative smile.

"Judging by the marks left by the hooks, the hooks are larger than ordinary household hooks, and the limit weight of each hook is about 5 kilograms, and the hooks on the wall have seven or eight hooks at intervals...... So it can be estimated that the weight of the thief's body is between thirty-five and forty kilograms at most, and the distance between each row of hooks is not more than seventy centimeters, and most of them are between fifty and sixty centimeters...... The height of that thief should be between 1.4 and 1.6 meters at most. It's very likely that it's about 1.5 meters."

Hearing my analysis, Wei Wenlong laughed, stuffed a red date into his mouth, and chewed slowly: "A little girl who is about one meter five tall and weighs thirty kilograms."

"It's a bit like a gymnast's strength and build, and I'm afraid the thief isn't too old." I speculated." But that's all we can say now...... If you want to speculate more, you have to have more clues."

"Holy, hey, hey...... You two are acting like professional detectives, and you can see so much from such small details, and you have even seen the physical data of that thief." Hearing the exchange between me and Yu Wenlong, Wang Yong was stunned when he heard it, and finally couldn't help but interject and shouted.

"You can think of us as detectives." I smiled faintly and looked at Wang Yong's shocked expression and said.

"You ...... Cow." Wang Yong gave two thumbs up, raised his eyebrows and raised his eyes, and said to me and Wei Wenlong.

In the face of Wang Yong's praise with rich expressions, Yu Wenlong and I chuckled at the same time.

The smile lasted for a few seconds, and I returned to normal.

"Wang Yong, I still have a question for you: you said that when the theft happened yesterday, you went to the bathroom because of diarrhea, right? So, when the theft happened, was it before, after, or after?"

Wang Yong was stunned for a moment, his eyes rolled slightly, and after thinking about it, he said:

"I guess it was after. I think I came out of the bathroom ten minutes before the CCTV video showed the question."

"You ate bad that day, and your stomach didn't have it." Wei Wenlong seemed to understand what I meant.

"No, it's strange here, I ate it that night, I ate it at Pizza Hut, and there was no problem with dinner, but I was like someone had been given a laxative for a long time, and I guess there was something wrong with the cup of coffee I had in the office at that time."

"You had coffee in the office."

"yes, it was a little late, so I made a drink to refresh myself...... What's wrong?" Wang Yong looked at Wei Wenlong and me suspiciously, his face was still puzzled and confused.

"You had a stomach problem when the museum was stolen a few times ago." I interjected and asked.

"yes...... Coincidentally, every time I had a tummy, there would be a theft, and it was like I knew the future." Wang Yong touched his brain and said.

"It's the coffee every time." I glanced at Wei Wenlong and asked.

"Not really, right...... I don't drink coffee every time, and sometimes...... I also eat a boxed lunch or drink tea or something...... Ay...... It's been a long time.I don't remember it clearly.But I remember the theft last month.I had a stomach trouble with my old Zhang in the office.At that time, I drank the same oolong tea with him.I thought it was a tea problem.Why are you asking this."

Realizing the insignificance of the question, the look of doubt on Wang Yong's face was even worse.

"Nothing. I'm just about a point. The manager's office is on what floor." I digressed from the conversation and asked.

"There's a passage at the back of each gallery and the management's office, and mine is on the third floor." Wang Yong scratched his ears and looked at me and said.

“...... You've got vents in your office, right?"

"Eh, how do you know?" Wang Yong looked at me and said curiously. Hey, wait, you don't think that thief climbed in through the vent, right? The size of the vent is just right for a person to climb in. We have a vent that is almost impossible for an adult to climb into, even if a child wants to climb through that vent, it is very difficult to even plug an adult's head. I remember one time a female colleague in our office was looking for the source of the inexplicable stench in the officeThe female colleague's figure is slim and slender among the female colleagues I know, but even she is stuck there. You can imagine how tight the vent must be."

Wang Yong's description is not unconvincing, but I still frowned.

"Let's go over there. I think I'm probably going to have a point."

Wang Yong didn't understand what I was thinking at all, and he couldn't figure out what kind of medicine I was selling in this gourd, but after thinking about it for a while, he still took us to his office on the third floor.

Wang Yong took out his ID card and swiped open the office door.The moment the lights came on.The chaotic scene in the office jumped into my eyes.Several rows of camphor wood bookshelves filled with kraft bags, cultural relics and jade porcelain data folders connected to the ceiling.There are also black messes on the desk, upside-down materials, notebooks.Scattered piles of albums, stamps and pen holders.There are also undumped trash cans in the corner trash cans that exude a strange musty smell.Even on a few lunch boxes in the trash cans.You can also see broth, Sauce and rice grains stained with sauce crawled like maggots all over the surface of the lunch box, and the whole office was filled with the smell of fermented foul-smelling broth.

When he walked to the door, the fox fairy wrinkled the tip of his nose, and his eyes showed disgust.

"Hey, hey, I'm a little busy today, I haven't dumped the garbage, it's a little smelly...... Don't mind, don't mind, hey, hey, haha." Seeing the fox fairy's frowning appearance, Wang Yong smiled awkwardly, and was at a loss.

I didn't say anything, I pinched my nose and walked to a desk near the door in the office.

I stood in front of Wang Yong's desk, and then I slowly raised my head, and I saw a small vent in the ceiling.

"Sure enough...... as I expected," I couldn't help but smile when I saw the vent directly above my desk, and then turned my head slightly, and glanced at the office again, and found that there was glass under each row of bookshelves in the office that could be opened outward, and the glass sliding doors were full of books. Compared with Volume 3, Volume 4 has a little more foreshadowing in the early stage, as there will be three new characters appearing. However, after the museum incident has passed, it will enter the main line