turned on the flashlight and carefully checked the laser head through a magnifying glass, and there was nothing abnormal, which made Li Shan secretly relieved, it seems that the transformation of the laser head this time should be half successful. Although it has only been tested six times so far, it is at least much more powerful than that ordinary laser head. I just don't know how many times it can withstand such shots, and it will have to assemble a second and third laser guns in the future. I all need some spars used in this laser head, and that spar was given to me by Xu Youjian's daughter Xiaodoudou when I went to Xiangxi last time, so this kind of spar may only be available in that place, and I must take some time to go there and find some of this spar.

Li Shan had a hint of hesitation, mainly because he was worried that excessive use would reduce the service life of the laser head, and on the other hand, how could he know how much it could withstand without testing.

took out his mobile phone and looked at the time, and felt that it was a little early to go back now, so it was better to take this opportunity to try again, Li Shan looked at the mobile phone at the same time, and noticed that the mobile phone was showing no signal, and he didn't care, this situation is often encountered, but after a while, or there is no such problem in another place, and the main thing for him now is to focus on the seventh test firing.

But when he went to control the drone and prepared to take off, he found that the remote control was out of order!

It's not so much that the remote control fails, but that the control signal of the flying machine is lost, because when the drone is turned on, the blades have begun to rotate, but no matter how Li Shan fiddles with the remote control, he can't make the drone fly off the ground.

What is going on? The remote control is broken? Li Shan has encountered this situation for the first time, and in the past, he would encounter the problem of the drone losing signal in the middle of the road, but because the automatic return function for signal loss was set up, he did not suffer any loss.

But this time the situation is very strange, the drone cannot fly in the first place.

Li Shan's initial judgment was that the remote control was broken, but fortunately, he still had a remote control, and the code had been checked in advance, but when he used the second remote control to control it, the situation was still the same.

It is impossible for both remote controls to be damaged at the same time, then the problem can only be with the drone.

This drone is Li Shan's No. 1 drone, which is his earliest drone, which is usually used for various tests, and all kinds of components on it are the most ordinary, but now is not the time to find problems, so Li Shan had to close the stall and go home.

The next day, after Li Shan got off work in the afternoon, as soon as he got home, he began to check the drone, but when he turned on the power of the drone, he tried it again with the remote control, but found that everything was normal again, the drone forward, backward, up, down, left, and right were no problem, and everything seemed to be normal.

So why did this happen during the test last night? Li Shan couldn't figure it out for a while, judging from the current situation, there is no problem with his drone and remote control, so what is the problem?

Although this was just a small accident, Li Shan didn't think so, although this was the first time he had encountered this situation, no one could say for sure whether this situation would occur in the future, if this happened at a critical time, the consequences would be unimaginable.

So, Li Shan decided to find out the reason.

Li Shan suddenly thought that last night on the embankment road, when he took out his mobile phone to check the time, he found that there was no signal on the mobile phone, and he didn't feel anything at the time, and now he thinks about whether there will be any connection between the two.

Two days later, Li Shan ran to the river embankment again at night, in order to find the answer to why the drone went out of control.

At the same time and in the same place, Li Shan began to fiddle with the drone, he wanted to see if there would be a runaway scenario that night.

As a result, everything was normal, at the beginning Li Shan slowed down the flight speed of the drone very slowly, and carefully controlled the flight, and then constantly expanded the flight distance, until the drone flew a hundred meters away, and there was no situation that night.

It seems that what happened that night was just an accidental phenomenon, and then I thought about it, even if that phenomenon still exists, and with his current ability and means, he can't find out the cause of the problem, but the loss of control over the drone has always made Li Shan have a hidden worry in his heart, feeling that if he can't find the reason, if he encounters this kind of thing at a critical juncture in the future, the consequences will be almost devastating to himself, thinking of this, Li Shan's brows can't help frowning.

Li Shan's brows were furrowed, but he found someone who was even tighter than him.

This is a middle-aged man in his forties, but when he sees his brows furrowed, it seems that something very important has bothered him.

He lowered his head, walked all the way along the embankment road, fiddling with an instrument in his hand as he walked, seemed to notice something, raised his eyes, saw Li Shan, and didn't care much, still looked down at the instrument in his hand, suddenly thought of something, looked up at Li Shan again, his eyes fell on the drone in his hand, and his eyes couldn't help but light up.

"Little brother, are you playing with drones?" the middle-aged man asked.

"yes, it's okay to come out and see the night view. What is this in your hand?" Li Shan replied with a smile, he was also very interested in the instrument in the middle-aged man's hand.

"Tell me first, did you find anything here?" the middle-aged man asked, staring into Li Shan's eyes.

The street lights on the side of the road were not too bright, but they were close, and Li Shan could clearly see the appearance of the middle-aged man.

However, I saw that this person was of medium height, but slightly thin, with clear but not thick eyebrows, deep and melancholy eyes, and a slightly too large nose and mouth. The corners of his eyes were already wrinkled, which seemed to be even deeper.

Of course, Li Shan wouldn't tell the truth about the purpose of his visit, so he said, "I didn't find anything, what's wrong?"

The middle-aged man only hummed, didn't say anything, then turned around and sat down facing the river, he put the instrument in his hand on the ground casually, took out a box of cigarettes from his pocket, took one out of it, and gestured to Li Shan.

Thinking that this middle-aged man was holding an instrument in his hand, and he didn't know what he was busy doing here in the middle of the night? Could it be that the interference of the drone that night had something to do with this person, thinking of this, Li Shan approached the middle-aged man a little, handed him a cigarette, and said that he did not smoke.

Li Shan also sat on the ground like a middle-aged man, opposite the wide channel of the Wei River, with a thin layer of night mist on the river, and the dark and redundant buildings in the distance also appeared darker and hazy. A few dim lights, the shadows are sufficient, and you have to look quietly to see it. A few faint stars were reflected in the river, and the breeze blew, making a few waves.

"Which company are you?" said the middle-aged man, taking a puff of his cigarette.

"Pinnacle United. Li Shan was stunned at first, and immediately thought of something, which was nothing to hide, so he answered the middle-aged man's question very happily, and at the same time, there was a little self-satisfaction in his heart, after all, the name of the summit union was also very loud.

"Oh?" When the middle-aged man heard this, he couldn't help but glance at Li Shan again, and then said: "Summit United, yes, I know Liu Peiyuan and President Liu of your company, and your Summit Union has developed well in recent years." ”

"That's right, big brother, you are also doing a line?" Li Shan asked tentatively.

"No, I'm a radio. The middle-aged man said lightly.

Through conversation, I learned that the middle-aged man's name is Xiao Guocheng, who works at the Chang'an Optoelectronic Research Institute and works as a department manager in it.

Since his work was mainly in the radio field, in his spare time he set up a radio association with a few radio enthusiasts, of which he was the president, and often engaged in activities with some radio enthusiasts, and they often held activities such as radio orienteering.

Radio directional sport is also called radio direction finding exercise, it is similar to a game of hide and seek, but it is a movement that uses the direction finder in the hand to use direction finding technology to find the automatic transmitting station (also called the fox station, which is hidden by the referee in the competition venue in advance), to see who finds more radio stations and uses less time, who will win.

That night, Lao Xiao's association and a group of people from another association had a radio orienteering competition here, and those radio enthusiasts, commonly known as "ham", could not find the fox station hidden here in this area, and finally found that the wireless signal here was seriously interfered with, causing their activities to be canceled that night.

The terrain here is open, there are no buildings, let alone electrical facilities, why does radio interference occur? In this regard, Lao Xiao has always felt very strange and has been puzzled.

As a technical expert, Lao Xiao always has an obsession with finding out about unknown problems. In the days that followed, he himself came several times to carefully inspect the area, and he was puzzled that the electrical interference did not occur that night.

Because he saw that Li Shan was a pilot who operated a drone, he was not half an industry insider, so he could tell him frankly.

Li Shan was moved when he heard this, he was also here that night, but why didn't he see these people, could it be that those people were hidden in the shadows? If so, then what he did was not seen by this group of people hiding in the shadows, he was testing the laser gun that night, if someone saw all this, the consequences would be unimaginable.

Thinking of this, Li Shan couldn't help but change color, and the murderous intent on his face flashed, but fortunately, it was relatively dark now, and Lao Xiao's face kept rushing to the river, just talking to himself, and he didn't see the change in the expression on Li Shan's face.