I have already thought about this tension.
"So special bullets must be used. Just like in some legends, bullets made of ice? They melt and disappear afterward."
For ice bullets, tension is also only seen in. He has never seen the real thing.
"But ice bullets are impossible. Ice is too fragile to be shot that far."
Fan Bu has done some research on this.
"You can use the same glass material as car window glass to make bullets. Glass bullets have been used in history.
“But glass bullets cannot be made of exactly the same material as car window glass, and theoretically they can still leave flaws.
“It’s just that in fact, the Criminal Investigation Bureau’s investigation cannot carefully analyze the composition of every piece of broken glass. It can only do a sampling test at most.
"So the likelihood of actually finding glass bullet fragments is still very low."
"Then use some kind of water-soluble mineral, such as salt, to make the warhead. The warhead fragments melt in the water and disappear."
After Suzaku finished eating the barbecue, he started to drink and drank while smiling.
"It's a good idea to make bullets out of salt. Then Lockard's Law of Matter Exchange will be useless!"
Fan Bu said in amazement.
The so-called Locar's law of material exchange, which he regarded as a divine law, states that whenever two objects come into contact, there will be an exchange of material.
For example, if a warhead hits glass, the metal residue from the warhead will definitely be left on the glass. Trace amounts of glass are bound to remain on the warhead.
But if the warhead is replaced by salt crystals, it will be more complicated. The molecule of table salt is sodium chloride. It will dissolve if dropped into a lake.
Even if it theoretically dissolves, if more detailed analysis is performed, traces of table salt can still be found on the glass fragments.
But whether it is sodium ions or chloride ions, they are widely found in natural water bodies. What use do you find them for?
Therefore, even if material is exchanged, there may not necessarily be clues pointing to a crime. The law of material exchange is still there, but it is no longer helpful to the investigation.
"But the way this sniper was committed is still not perfect."
Meng Fei imagined the scene at that time.
“The bullet hit the front window of the car and sent fragments flying, and there must have been a small amount of glass fragments left on the road near the point of impact.
"If you accidentally fall into the water, the car glass will not break in advance. So there will be no glass fragments left on the road.
"You only need to carefully look for any remaining window glass fragments on the roadside to distinguish between the two situations."
"And if you're going to hit a vehicle with a sniper rifle, the shooting point is either in the mountains on the lake shore, or right on the road, or in the lake."
Mo Sheng denied the possibility of sniping from another angle.
"But the nearest straight-line distance between the incident location and the lake shore is three kilometers. Shooting from the mountains, there is no sniper rifle with such a long range."
“The road is closed to outside vehicles. There are cameras every one kilometer.
“They investigated all the surveillance videos and found no suspicious persons or vehicles, nor any suspicious boats on the lake.
"So sniping is out of the question."
"Is the driving system of this car safe enough? Maybe it has been hacked by the network!"
Chen Han moved out of his old business.
Pure electric vehicles now have assisted autonomous driving systems, and the security systems are very weak.
If it is cracked through the network, it is completely feasible to remotely control the vehicle's accelerator, brake and direction through the network.
"If that were the case, the EDR system would have recorded the data."
Meng Fei shook his head and continued.
"In fact, as long as the driver's consciousness is confused, whether he is frightened or asleep, this accident can occur."
Although Gu Zi likes to drink beer, his alcohol tolerance is very poor. After half a can of beer, I already felt top-heavy and the world began to float.
If he was driving, the probability of falling into the lake must be greater than 50%.
"It would not be difficult for the murderer not to be at the scene. There is no need for a sniper rifle or a sophisticated cyber attack.
“Don’t drivers usually bring a big cup with a lot of tea?
"As long as the cup is drugged in advance and the driver faints after drinking the water, this accident may occur."
Meng Fei held his somewhat heavy head and leaned towards his wife.
"If you just drugged it, it would definitely leave traces in the tea cup. It is impossible not to detect it."
"Hey, what if instead of drinking it, you use poison gas or something?"
Chen Han was inspired by Meng Fei's reminder.
"I once saw a movie where the killer built a mechanism into the seat belt buckle. As long as he doesn't move, nothing will happen.
“While driving, if someone pulls out the seat belt buckle, the mechanism will be triggered, the poison gas will be released, and everyone in the car will be poisoned and comatose.
"Isn't it weird that the car drove into the lake?"
"But this requires agency control."
Meng Fei scratched his head and blew out a breath of white breath full of alcohol into the cold night sky.
“If such a clever mechanism is installed in the car, it will be easy for the criminal investigators to spot the problem.
“And the people in the car were all suffocated to death, right?
"If it was poisonous gas poisoning or inhaled anesthetic drugs, the autopsy should also find it, right?"
"right."
Mo Sheng nodded.
"Whether it was a comprehensive inspection of the vehicle or an autopsy, no special devices or traces of drug use were found."
"Even if there is a device, it may not be possible to detect it, right?"
Chen Han did not retreat easily this time. Although this guy is usually not good with words, he doesn't like to give in during disputes.
"Maybe it directly uses some device in the car, such as the air conditioner in the car, or it uses something brought by the passengers themselves."
Chen Han's statement reminded Meng Fei.
The murderer was not at the scene and wanted to use something to cause an accident in the car. Then the things are either on the car or in the passengers' own belongings.
If the items are to be included in the passengers' belongings, it requires very long-term planning.
Passengers' belongings are usually prepared before travel and then placed in the suitcase.
At that stage, the "murder mechanism" is prepared. It is difficult to control where the "attack" occurs, right? Even if it is a time bomb, it can be easily detected afterwards.
To accurately create accidents, Meng Fei actually prefers devices or items to be placed in the car in advance.
Theoretically, the murderer should be very familiar with the vehicle's characteristics, route, departure time, etc., in order to accurately carry out the perfect crime.
So the things that really cause accidents should be placed in the car.
But the amazing thing is that the criminal investigators must have carefully inspected the vehicle, and the water damage to the vehicle was not too serious, so they found nothing?
Even if there are any toxic substances released in the air conditioner and soaked in water, it is impossible for all traces to disappear.
Could it be that this thing was hidden unknowingly in the passengers' belongings and could cause an accident to the driver without leaving any traces at all times?
What the hell has such a miraculous effect?
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