After carefully observing Lao Xiao for a while, and through the side knocks, I felt that Lao Xiao did not seem to be testing himself, and they chose to do it at one o'clock in the middle of the night when they were active that night, the reason why they chose such a late time is mainly because although it belongs to the edge of the city, the people are not very dense, but after all, this is also a radio control area, and the "hams" are worried that the time is too early, which may interfere with the normal network transmission, so they try to choose to act later to minimize the impact.

They came out for activities at that time, but they had already gone home to sleep, so the chance of meeting them was not very good, and Li Shan was a little relieved.

Since there was no threat to himself, Li Shan also focused his attention on the problem of radio interference. He and Lao Xiao have the same questions, and they have the same ambition in this regard.

"But I flew here a few times and didn't find any problems. Li Shan said.

"There shouldn't be any problems, I've been testing here for the past few days, but I didn't find anything that night. Lao Xiao seemed to be stuck in a long thought. What he didn't know was that this Li Shan beside him looked inconspicuous, but he was a real dangerous guy, of course, in the case of not posing a threat to him, our Li Shan was still very easy-going.

"It's normal for wireless signals to be interfered with, don't we often experience poor mobile phone signals?"

"You don't know, the telecommunications signal was jammed in a passive way, and the signal jamming that night was very serious, as if there was an invisible wall here, blocking the radio waves, no, it can't be said to be like a wall, it seems like a vortex sucking the radio waves in, I suspect it's man-made, but so far no evidence has been found. Lao Xiao has been busy with this matter for the past few days, and he is faintly uneasy in his heart, as for why he doesn't know very much, so he very much wants to find the source of information interference.

Because he hasn't figured out a clue in the past few days, he is a little depressed in his heart, and he urgently needs to find a place to vent his bad emotions, and he just met Li Shan, and Li Shan seems to be a good listener, don't you know, Li Shan, like him, also wants to know what happened.

"What, radio waves also produce whirlpools?" Li Shan was a little puzzled when he heard this. He has only seen some whirlpools in the water with his own eyes, and he has also seen them in movies and television, that kind of whirlpools are very terrifying, and sometimes they can even suck the whole big boat into it, so what kind of concept is this invisible and untouchable radio wave whirlpool, Li Shan dare not imagine.

"We know that radio waves are a form of motion in the electromagnetic field. Electricity and magnetism can be said to be two sides of the same coin, and a changing electric field will produce a magnetic field, that is, an electric current will produce a magnetic field, and a changing magnetic field will produce an electric field. The changing electric field and the changing magnetic field constitute an inseparable unified field, which is the electromagnetic field, and the propagation of the changing electromagnetic field in space forms electromagnetic waves, and the changes in electromagnetism are like water waves produced on the water surface, so they are called electromagnetic waves, also known as radio waves. These days, Lao Xiao has been thinking about this question, and according to the current theory, it is impossible to explain the phenomena he has observed.

Li Shan only knew a little bit of this physics knowledge when he was in school, and even if he knew so little, he basically returned it to the teacher. Fortunately, Lao Xiao said it is also easy to understand, but I also understand a lot, to be able to meet such an expert-level radio master, it will definitely be helpful to his own drone in the future, so I hope to be able to make friends with Lao Xiao, and at the same time I want him to give himself some common sense things.

Seeing that Li Shan was so studious, Lao Xiao looked at the watch on his wrist and felt that it was still early, so he took another puff of cigarette and continued: " Since it is an electromagnetic wave, there must be a magnetic field, but the propagation form of the wave is propagating in a straight line, we assume that under the impetus of some kind of afterburner from the outside world, the radio wave does not travel in a straight line, but rotates in a certain way, and forms an electromagnetic vortex, as long as the energy of this electromagnetic vortex is large enough, then the radio waves passing through here will naturally be sucked into this vortex, so it seems that the radio waves displayed in front of us are sucked in, this explanation is also reasonable, and it is theoretically feasible, I now call it an electromagnetic vortex。 ”

Lao Xiao said his inferences in the past few days, this only exists in a theoretical assumption, but also a kind of bold inference of his, which has no precedent in previous theories, if Li Shan is an expert, he will definitely not say these things to him, and it is just Li Shan is a layman, and he is not afraid of any reproach when he says it, while saying his own inferences, he also straightens out his own thinking by the way, and enriches and perfects the loopholes in his inferences.

"Then how did this electromagnetic vortex come about?" Li Shan listened to it as if he was listening to a book from heaven, but he was still very interested in it.

"We know that there is a south pole and a north pole in the general magnetic field, and if a huge energy happens to act on a certain pole, then the poles will rotate, and the magnetic field will rotate with it, like a millstone to rotate, and if the speed of rotation is fast enough, then the electromagnetic vortex will also be generated. Lao Xiao said.

"Electromagnetic vortex!" Li Shan muttered this term in his mouth, looked around, seemed to understand a little, and said uncertainly: "What is this huge energy you are talking about?"

"I can't say what this huge energy is, such as ......" Lao Xiao seemed to be thinking of using a suitable word, "such as laser." ”

Although Lao Xiao was very contemptuous when he said these two words, it was tantamount to a thunderbolt in Li Shan's ears, and he highly suspected that this guy was here to test himself, he looked at Lao Xiao again, and saw that this guy looked as usual, and did not find anything special, and he couldn't help but be a little surprised in his heart.

The next day, Li Shan received a call from Wang Hai, the leader of the fifth group of the Summit United, saying that he was free to come to the group and said a new address.

Wang Hai didn't say anything on the phone, and Li Shan didn't ask, because from Wang Hai's tone, it could be heard that it shouldn't be a big deal, otherwise he wouldn't have time to go.

Li Shan came to the new address given by Wang Hai on the weekend.

It is located in a nondescript office building, the surrounding area is neither particularly bustling nor very remote, everything is decent, very much in line with the characteristics of an ordinary small business company.

Li Shan is now outside the building, looked around, and nodded, the new address has an ordinary and unassuming personality, which is very in line with Wang Hai's character.

When entering the first floor of the building, the security guard at the door was very conscientious, carefully inquired about the reason why Li Shan came here, where he went, etc., and asked Li Shan to register it in a notebook. This made Li Shan feel a little inappropriate, because the five groups belonged to a semi-secret organization, and if someone was interested in checking the visit records, they could completely count the members of the five groups who came here, so wouldn't the situation of the five groups of people be all mastered? Next time, you must use a fake identity to register here.

The new office of Group 5 is located on the 10th floor of this building, and there are not only Group 5 here, but there are also some other small companies, as can be seen from the Office Lady passing by in the hallway from time to time.

Li Shan came to the door with the door sign written "Hengxiang Business Electronic Service Company" and stopped, feeling funny in his heart, this five groups can really do it, I don't know why it has such a name.

The door was hidden, Li Shan did not enter rashly, he knocked on the door, and then heard a nice female voice inside say please come in, then pushed the door and walked in.

Pushing open the door, the first thing that catches your eye is a shadow wall marked with the company's logo, the logo exudes a soft yellow light, there is a table in front of the shadow wall, and a beautiful female front desk sits behind. This woman is about twenty years old, with a melon seed face, a pair of very large and charming talking eyes, although she wears a professional uniform, but it can't stop the vitality of a young girl exuded from her body, Li Shan couldn't help but look at her twice.

"You are Mr. Li, Mr. Wang is waiting for you inside. The female receptionist said with a smile.

"Do you know me?" Li Shan blurted out, and suddenly thought that he must be a member of the fifth group who can work here, so he knows that he shouldn't be a problem, isn't he talking nonsense, it's just that he hasn't seen her before.

"You are the assistant to the leader of our group, how can you not know each other. What the girl said did not surprise Li Shan.

Li Shan sighed, then didn't say anything more, and couldn't help but think in his heart, the Wang Zong in the girl's mouth should be Wang Hai, when did this guy become Wang Zong, isn't this funny?

Bypassing the shadow wall, Li Shan walked inside, there are not many office facilities, it looks neat and clean, and through the cork wall on both sides, some fashion pictures are nailed, which suddenly makes the whole space rich and enriched, and it looks much more lively and warm.

A whole row of cabinets against the wall is not only a storage but also a display, which is not only convenient for accessing various materials at any time, but also becomes a dazzling decoration for the space summary.

At this time, Wang Hai stood up and greeted him with a smile, and Li Shan said with a smile: "I said Mr. Wang, the environment is good!"

Wang Hai smiled and gave Li Shan a shoulder for a moment, and said, "Give me less poverty, what are you busy with, why are you free today?"

At this time, the beautiful receptionist brought a cup of tea, put it on the sofa in front of Li Shan, and then turned around and went out.

"Mr. Wang, even the female secretary is used, it's okay!" Li Shan said with a smile as he watched the girl's slender figure go out.

"You're still finished, aren't you looking for a draw?" Wang Hai said angrily.

"It's not me who said, the original group was in that environment, and it was really enough, how can I be willing to change it now, have you figured it out?" When I think of the environment of the urban village where the five groups were originally located, although the current environment is not that kind of luxurious decoration, it is not the same as the original environment.