When Lin Yaxin and Qu Zhiheng were talking, they had an intuition of being stared at. She had always been confident in her instincts, especially when she was in danger. This is not a special feature, but the result of long-term training and actual combat.

At that time, the reason why Lin Yaxin turned her head to look at the building opposite the school was because out of the corner of her eye, there was something glowing on the roof of the opposite building, almost instinctively, Lin Yaxin thought of the infrared telescope. And that fleeting, reddish glow is exactly what reminds her of infrared telescopes.

Infrared telescopes can see infrared, so they can be used at night, and can be easily found in the dense forest people or animals, infrared telescopes through photoelectric conversion, the infrared into electron flow, and then electrons multiplied, and finally electrons hit the phosphor screen, into visible light. Infrared telescopes are very expensive, generally more than a few thousand yuan, and it seems that they cannot be produced in China, only the United States and Russia can.

There are two types of infrared telescopes, active and passive. Active means that the telescope emits infrared rays, which are reflected by the object and receive and image. Passive refers to the direct reception of infrared rays emitted by objects (as long as the object is not absolutely 0 degrees, it will emit infrared), but the infrared emitted by the object itself is very weak, so it must be magnified to form.

Ordinary people will not buy such sophisticated equipment, because the greatest function of infrared telescopes is actually at night. It can also be said that infrared telescopes are a type of night vision goggles.

Although she thought of an infrared telescope in her mind, Lin Yaxin was not so sure in her heart. After all, she and Wang Qiujie didn't receive any information about the infiltration of fox hunting mercenaries. However, at that time, Wang Qiujie also said that it was not the people from their department who were responsible for checking the security checks of all roads, but Wang Qiujie did not say which department it was. This does not rule out the help of the public security system. And now that he knows the importance of Xiao Jun, the target person who needs to be protected, he naturally doesn't dare to take it lightly.

The other party is the top mercenary of the world's largest mercenary company, and the public security system will definitely not be their opponent. Because their strength is not inferior to their own.

Quickly came to the sixth floor, Lin Yaxin opened the manhole and drilled it without thinking about it, but she was still on guard, and she had already taken out the USP pistol she had been carrying with her.

Lin Yaxin approached the place where she found the red light flashing as fast as she could, and tried her best to hide her figure. However, there was no one on the empty roof, and I found that where the red light flashed, there were a few cigar butts.

Lin Yaxin carefully picked up the cigarette butt, fortunately, the smoker did not suck the cigar to the end, and the brand of the cigar can still be seen from the tail, all of which are English letters: Treasurer.

Although Lin Yaxin doesn't smoke, she still has a certain understanding of cigarettes, which are called Treasurer brand cigarettes. The price of each box is 24 euros - 30 euros, which is converted into nearly 300 yuan a box and 3,000 yuan a piece. The quality and packaging of its flagship brand, Black Treasurer, is exquisite, such as the extravagantly sized Virginia Flue-cured Tobacco Blend 90mm wrapped in a unique foil box, each with a hologram of pine paper on it, guaranteeing that the products are genuine. The filter rod of this brand is golden, while the cigarette body is black, and the cigarette case is also black with a gold pattern on the background, which is very coordinated and looks graceful and luxurious. The tobacco in cigarettes is pure tobacco leaves without any chemicals, which allows smokers to enjoy the pleasure of pure smoking.

However, the most important thing is that this kind of cigarette has not entered the country through official channels, so there is no registered trademark in China, let alone a store.

Lin Yaxin frowned, what does this mean? It shows that someone has brought this cigarette into China from abroad. This cigar butt looks like it has just been smoked, and even in foreign countries, no one can casually consume this kind of cigarette, let alone smoke a few cigarettes........

Lin Yaxin looked down from the roof of the building, but found nothing. There are three units in this dormitory building, and each unit has a manhole, and the other party has enough time to leave during the time I came up. In three units, there is only a one-third chance of meeting this person, and it is obvious that Lin Yaxin does not have such luck.

With the cigarette butt of the cigar, Lin Yaxin went downstairs and returned to the school gate. Wang Qiujie was already waiting for her at the school gate at this time.

Seeing Lin Yaxin come back, Wang Qiujie smiled helplessly: "What did you find?"

Lin Yaxin didn't say anything, and handed the cigar butt she found to Wang Qiujie. Wang Qiujie took it, only glanced at it, and said: "What should come is always coming." ”

"Which department is assisting us in the inspection? I suspect that the other party has already brought infrared telescopes, has such a sophisticated instrument not attracted the attention of the assisting department?" Lin Yaxin asked.

Hearing Lin Yaxin's words, Wang Qiujie's smile was even more helpless: "The reason why I didn't tell you last time was because I was afraid of increasing your pressure." It's just the local public security system that assists us. ”

Sure enough, Lin Yaxin nodded clearly and said, "It seems that they have already set their sights on Xiao Jun." ”

"That's how it should be. Wang Qiujie said: "I have been paying attention to the commanding height monitoring point of this area in the past few days. When school was out this afternoon, it sounded an alarm from an infrared monitor. As he spoke, Wang Qiujie revealed the watch he was wearing on his wrist.

The watch brought by Wang Qiujie has an anti-surveillance alarm function, which is a newly developed product, but the product is not very mature. Although anti-surveillance technology is very mature, it still needs to be developed to make this technology into a camouflage instrument as small as a watch.

"Unfortunately, this thing doesn't have the accuracy and effective distance. Wang Qiujie said: "I still have to report the defects of this thing to the organization, so that the technical department can improve." ”

Hearing Wang Qiujie's words, Lin Yaxin smiled, every time the technical department developed something, they would let them do experiments.

"By the way, there's one more thing I want to give you, I didn't bring it the last time we met alone, and I'll give it to you today. Wang Qiujie said, and at the same time took out a small stick that was the size of a keypendant, only five centimeters long, and handed it to Lin Yaxin, saying: "This is specially designed for you, I am very greedy." It's a knife. ”

Lin Yaxin stretched out her hand to take it, and her hand was heavy, which was completely beyond her expectations. This knife is silvery-white all over, and what is even more delicate is that it is in the nature of a switchblade. At the front of the round stick, there is a small button. Lin Yaxin only pressed it lightly, and the blade immediately popped out of the small stick.

"It's the latest alloy to be made, and it's really sharpened like clay. Wang Qiujie said with envy.

Lin Yaxin smiled slightly, and with a slight movement of the five fingers of her slender hand, the knife immediately seemed to be alive in her hand, flipping back and forth, doing all kinds of tricks.

"I love it, though. After Lin Yaxin said this, she suddenly shook her hand lightly at the iron fences on both sides of the main entrance of the school.

White light flashed, and no metal collision was heard. The blade of the knife in Lin Yaxin's hand had all been submerged in the iron fence, leaving only the round stick that hid the blade, trembling slightly......