The third floor of the Tinghai Exhibition Hall has a round tower-shaped structure. There are four exits. The service facilities are in place, but the security facilities are still at the level of the nineties.

Li Qi, Zhao Yun and Xun Xuan got out of the car, and a shield employee stepped forward to say that this place could not be parked casually. Li Qi showed his ID and the employee reported. Then he ignored Li Qi and the others. There is some hostility in the words, hostility towards the rivals who are stealing jobs.

Zhao Yun didn't go up the steps, looked left and right for a while, pointed to the roadside camera and asked, "That camera took it?" ”

Li nodded: "Well, shoot to the fourth step of the stairs." ”

"Fourth Order!" Zhao Yun walked to the fourth step. Take out the stopwatch and press it, then run to the museum. Two shield guards hurriedly stopped. Zhao Yun stopped and walked back to greet Li Qi and Xun Xuan. Zhao Yun said: "You said that it took 60 seconds for the thief to leave the camera and return to the camera. It took me fifteen seconds to run down the fourth staircase and thirty seconds back and forth. East-West location. ”

Xun Xuan took out his laptop, which was a three-dimensional diagram. The stolen fakes are located on the second floor by the window. Zhao Yun frowned: "It doesn't make sense." Suppose the other party flies directly from the first floor to the second floor with an iron claw or something, and the windows on the second floor can be completely sealed, with only a 15 x 15 cm vent at the top of the window. Theoretically, he couldn't get into the second floor. ”

"Theory?" Xun Xuan asked rhetorically.

"15 times 15 is the size of a head. We all say that the head can pass, the person can pass. But that's for the long position. For such a round hole, the head can enter, but the body can't. Unless it can shrink the bones. ”

Li Qi asked rhetorically: "Bone shrinking is to remove the protruding joints. 60 seconds, big brother, who is so strong? After drilling in, you have to restore it. Steal the picture. Then drill it out and shrink the bone again. ”

Zhao Yun asked rhetorically: "What do you think?" ”

Li Qi looked at the computer and said: "The window on the second floor is two meters eight meters away from the ink painting. A normal person's arm is about 60. Add a robotic arm and you should be able to do the trick. ”

Xun Xuan objected: "Li Qi, the exhibits here all have basic alarms. Although it is easy to disassemble, I don't think the robotic arm can be so flexible with a human hand. And it's only thirty-five seconds. ”

The painting is hung on the wall, with nails punched into a U-shape, and both ends are deeply embedded in it. It's a bit of a fantasy to rely on a mechanical arm to steal a picture. How? It is impossible to walk from the first floor, and it takes at least five minutes to make a round trip. Li Qi called Mi Wu: "How about the surveillance video?" ”

"It shouldn't have been changed. And I found out after analyzing it with software. When the thief came out, he had a long object in his arms. Mi Wu said: "I think the police conclusion is credible. The person in this video is likely the counterfeit thief. ”

Li Qi used a speaker, and Zhao Yun sat on the steps and muttered, "60 seconds." How did it work. Li Qi, his previous two cases? ”

Li Qidao: "The first case was in Vienna, where he used the scaffolding left behind at the museum site to break the glass and then get in. Then break the glass of the display case and take away the things. At that time, breaking the glass of the display case triggered the alarm, and the guard thought it was a false alarm and turned off the alarm. ”

"Damn, why haven't I met such two guards?" Zhao Yun was dissatisfied.

"It's useless, even if the guards run over after the alarm is triggered, it will take three minutes. It only took him sixty seconds before and after he stole something. He doesn't seem to care about being discovered, as he is sure to flee the scene before being captured. Li Qi said: "I have studied this case. Simulated in the field. Follow the route of his theft, in the absence of my training. It takes eighty seconds to complete. After training, sixty-seven seconds was my best record. Li Qi said: "In the second case, the other party was more clever, and the police didn't understand which route he took to invade." And it only took 45 seconds. The police invited experts from a number of security companies such as IS to crack the simulation, which was the fastest, and it would take at least 50 seconds to complete the theft when the guards and probes were nothing. ”

"Is it using a time machine?" Zhao Yun asked nonsensically.

Li Qi wiped his sweat: "You and Mi Wu have such a tacit understanding? Please, this is an urban novel, and YY is as realistic as possible. ”

"Sixty seconds, minus thirty seconds. Thirty seconds to ...... "Zhao Yun sat on the steps to look at the museum:" too short, too short...... Has the glass been broken? ”

"Nope!" Li Qi replied.

"Could it be that the glass is broken, and then a piece is made to replace it?" After Zhao Yun finished speaking, he regretted how he could be on the same level as Mi Wu. Seeing Li Qi, both of them didn't bother to answer themselves. No, the thief capsized in the little thief's gutter, it's too embarrassing. Zhao Yun put forward another theory: "Security situation." ”

This question can be answered, Li Qi introduced: "There are seven internal guards, two are watching the surveillance, four people patrol in two groups, and one boss is with the surveillance." At the time of the incident, it took them three minutes to get to the closest ink painting. There are two guards inside each of the four gates to watch the surveillance. ”

Zhao Yun smiled: "That's only one possibility." ”

"What is possible?"

"There are two thieves."

Li Qi asked, "What's the solution?" ”

"A burglar sneaks in first, then steals the ink painting and gives it to burglar B outside the window."

Li Qi asked, "Why don't you bring it out yourself?" ”

"Because he has a reason to ......" Zhao Yun's eyes lit up and said: "We plan it this way, Thief A hides somewhere in the exhibition hall during the exhibition time, and then does it in the middle of the night." After Thief B takes the ink painting, Thief A is unable to leave and returns to his hiding place. Wait for the next day, which is today, to open the museum, and quietly blend in with the crowd again. ”

"This ......" Li Qi and Xun Xuan glanced at each other, this theft plan was logical. It is also in line with the police on-site investigation report. The ancestor of the thief is the ancestor of the thief. The police and the shield had a preconceived idea, and once they got in touch with the burglar in Vienna, they decided that the other party was a person who committed the crime. If there were two thieves in these three cases, such as Vienna, the problem of time would be solved. And the methods are the same, one person hides, and the other steals. It is aimed at the exhibition hall where the security technology is relatively weak and there is no thermal sensor. Take 10,000 steps back and say that the person hiding this person has been discovered, and as long as he does not admit his guilt, it will be difficult to prosecute him for theft of art.

Xun Xuan said: "Then you have to boil it." "There are still nine days, and who knows when the other party will be hiding. If you clear people in the exhibition hall on a large scale every day, it will alarm the other party and not say anything, and the other party is likely to change their strategy. Xun Xuan had already thought of the only feasible way, waiting for thief B to appear, seal off the exhibition hall, and then conduct a large-scale search. Now that the theft has been cracked, the two are waiting to be caught in the net. Is it really that simple?

Li Qi asked: "Zhao Yun, as far as your professional opinion is concerned, is the method you said the only explanation?" ”

"......" Zhao Yun replied after thinking for a long time: "Not necessarily." ”

Xun Xuan asked, "What's wrong, what's wrong?" ”

"Time. Suppose the opponent is a professional thief, and Peter is of the same nature. So let's think about it, will he not notice the time? In the three thefts, he was able to get out after half a minute of delay. Why do you have to leave this time flaw? Li Qi said: "I think the abnormal is a demon, it seems that I have to send someone to move a stool to sit in front of the ink painting." ”

"It's shameless." Xun Xuan smiled, took out the computer and said: "Looking at the security distribution map, last night the focus was on Area B, the exhibition of foreign collections." Among them, there are more than $20 million in more than five works of art. This thief committed three crimes, and the first two times the other party attacked Western art, that is, his circle of employers was these people. Suddenly interested in oriental ink painting this time? ”

"You mean to turn the tiger away from the mountain?" Li Qi asked rhetorically, if one person comes up with an answer, how to choose?

During the discussion of the three of them, Xia Qing, the person in charge of the shield, arrived. She said very politely: "Advisor Li, long time no see." ”

"yes, long time no see." Li Qi and Xia Qing shook hands.

"Hello General Counsel Xun."

"Okay." Xun Xuan nodded casually.

"Who is this?"

"It's my friend." Li Qi introduced: "He is also the boyfriend of Su Rong, an intelligence collector of our security company, who will accompany us to have a look." Zhao Yun. ”

"Oh!" Xia Qing shook hands with Zhao Yun and introduced himself: "Xia Qing." We talk as we go. ”

"Good!"

Xia Qing said: "I won't introduce the artwork. The exhibition hall is open from 8 a.m. to 9 p.m. After the museum was closed at 9 p.m., there were a total of fifteen guards in the exhibition hall. Eight of the guards are responsible for the monitoring of artworks at four intersections and in their own areas. There were seven other people, one as the captain, two as the chief monitor, and two groups of four patrol officers. All exhibits are equipped with an alarm system. Today, for special reasons, the venue will be cleared at six o'clock. ”

It's 7 p.m. and it's closed. The four people entered the main door, and the security guard first verified Xia Qing's identity, and then Xia Qing took three temporary passes to the three people, and entered the exhibition hall after verification again. Li Qi has been thinking about whether the two groups of patrols are too few, and it is clear at a glance that the two groups of patrols seem to be enough.

The exhibition hall is tower-shaped, with a level drop and a glass guardrail. In the center is an escalator. Standing on the third floor glass guardrail and looking down, the first and second floors are in full view, except for the dead corner under your feet. The two groups of people stand opposite each other on the glass guardrail on the third floor, and there is basically no place to hide people in the entire exhibition hall except for the pillars.

Xia Qing introduced: "Area B is a two-door entrance in the southeast, and a two-door entrance in the northwest. During the exhibition, there will be several glass doors separating the two exhibition areas. At night, we raise the glass doors. There is a safe fire escape in the southeast, west, and northwest. However, after the closure of the museum, all the security doors were locked, and the electronic locks were made. Only the captain with the password can be opened. ”

Li Qi asked, "Who was the captain last night?" Can you see it? ”

"It's me." Xia Qing smiled helplessly.

Li Qi asked: "How do you know that the counterfeit has been stolen?" ”

"There are two guards at each of the four gates to watch the monitoring of the exhibits in the area, and the surveillance screen is jumping, and after jumping to the ink painting video, I find a blank one." Xia Qing walked to a small carving in Area B and introduced: "The alarm is under the seat, the pressure alarm." There are also hanging pictures, and the alarm is usually mounted on the back of the picture frame or scroll, and the alarm will be given once it is moved. (To be continued.) )