Lu Weiwei always seems to be able to find a little tacit understanding with Gu Chen.

After months of team work, Lu Weiwei has gradually become a roundworm in Gu Chen's stomach.

For example, when Gu Chen yawned, his next move must be to find water to drink.

For example, when everyone was discussing issues, Gu Chen frowned and didn't speak, so there must be some objections.

Another example is that other little policewomen bought food for Gu Chen, if Gu Chen said that he didn't have to break the bank, then these things ...... In the end, it will definitely become the bag of the old king.

Knowing Gu Chen too well is sometimes not a good thing......

Being able to keep up with his rhythm, but not being able to find his next steps to operate, is often the biggest headache for Lu Weiwei and Officer Wang.

Gu Chen found clues, and Officer Wang and Lu Weiwei always took a beat slow to keep up with the train of thought.

This is a very embarrassing thing for the old comrades......

Gu Chen sat at the desk, smiled and said, "I can't tell you this first, let's talk about it in the evening." ”

"Mysterious. Lu Weiwei glanced at Gu Chen and walked into the bathroom with a basin.

Nine a.m.

The three of them sat on a hillside with a drawing board, and the drawing board was set in front of them, with a sense of ritual for the painter to cultivate the beautiful scenery of mountains and rivers.

It's mostly for show......

It is somewhat unreasonable for art students to enjoy the scenery just here without drawing.

Besides, a few people in Liucun also know about the situation, and if they don't pretend to be, the villagers are easy to be suspicious.

However, these are actually nothing to the three of them, and the most important thing is who the mysterious person is, and now everyone doesn't know.

Wouldn't it be even worse if the identities of the three were revealed?

The three of them are ostensibly in a serious sketch, but in fact, they are ventilating and discussing last night's situation.

Gu Chen even told the two of them about his analysis last night and the information he got from the old lady this morning.

People learn from experience......

Last night in the ancient temple, there were still a lot of discoveries, but alas...... They did not continue the investigation, and the most prudent way was adopted.

Officer Wang casually drew a few strokes on the drawing board and asked, "What did you say about the physical condition that appeared last night?"

Lu Weiwei shook her head: "I just want to know." ”

She looked at Gu Chen beside her: "Senior Brother Gu, what do you think?"

"Generally speaking, when people in the village have these symptoms, my first reaction is that it may be poisoning. ”

"Poisoned?"

Lu Weiwei and Officer Wang were stunned.

"That's right. Gu Chen nodded slightly, and the paintbrush in his hand did not stop: "Generally, people with symptoms of poisoning will experience nausea, vomiting, or dizziness, no sense of balance when walking, and even nervous disorders. ”

"Then Lao Wang and I were poisoned last night?" Lu Weiwei looked at Officer Wang suspiciously, and then looked at Gu Chen: "No, if there is poisonous gas in the ancient temple, wouldn't the mysterious person dig his own grave if he stays there?"

"That's right. Officer Wang also had a refined attitude, and suddenly became serious: "This mysterious person is hiding in the ancient temple, and the strange sound effects are played on the stereo for a long time, aren't they afraid? They won't have problems?"

"So, it's not very likely. Gu Chen glanced at the beautiful scenery below the mountain, continued to return to the drawing board, and said, "I think it should be some kind of infrasound." ”

"Sub-...... Infrasound?" Lu Weiwei was stunned for a moment and asked, "What kind of wave is this?"

Officer Wang sneered twice: "Lu Weiwei, if you don't work hard, you won't be able to chat online at a critical time, right?"

"You know what you say. Lu Weiwei rolled her eyes, it was finally time for Lao Wang to pretend to be forced.

"Sound waves with a frequency of less than 20 hertz are called infrasound, which are not easily attenuated and absorbed by water and air. ”

Officer Wang can only know a rough ......

In the past, during the training camp, Zhao Guozhi had popularized relevant knowledge to everyone, so Officer Wang could still know some things clearly.

Although what Officer Wang said was reasonable, Lu Weiwei didn't believe it, she still turned her head and asked Gu Chen beside her to confirm: "Senior Brother Gu, is what he said true?"

"That's right. Gu Chen withdrew the brush back to the pen holder, and then took out another one: "The frequency of sound waves that can be heard by the human ear is usually between 20 hertz and 20,000 hertz, and we call the sound waves below 20 hertz that cannot be heard by people as infrasound. ”

"But what does this have to do with our physical condition?" Lu Weiwei still didn't understand.

Looking at Gu Chen and Lao Wang's appearance of IQ online, Lu Weiwei suddenly felt that she was marginalized, as if Lao Wang's IQ had caught up all of a sudden, but she did not reach the passing line.

"Senior Sister Lu, let me tell you this. Gu Chen pondered for a few seconds and told her in popular language: "Some frequencies of infrasound waves, because they are very similar to the vibration frequency of human organs, are easy to resonate with human organs, but they are very harmful to the human body, and in serious cases, they can even lead to death." ”

Startled by Gu Chen's words, Lu Weiwei suddenly frowned slightly, and couldn't help shrinking her neck: "According to what you said, what attacked us last night, is it infrasound?"

After thinking about it, Lu Weiwei retorted: "But how did this thing come about? Is it a natural disaster?"

"Yes...... It's possible. Officer Wang just wanted to open his mouth to explain, but suddenly found that he had forgotten everything he had learned, so he could only say half of what he said, and looked at Gu Chen: "You let Gu Chen say." ”

"Sister Lu is right. Gu Chen was also the first to affirm Lu Weiwei's thoughts: "For example, in nature, storms at sea, volcanic eruptions, meteorites on the ground, lightning and thunder, whirlpools in the water, tornadoes, auroras, magnetic storms, etc., may be accompanied by infrasound waves." ”

"And in human activities, such as nuclear explosions, missile flights, artillery launches, ship sailing, car races, high-rise buildings and bridges shaking, and even blowers, mixers, loudspeakers, etc., can produce infrasound waves at the same time. ”

"Moreover, infrasound waves have a wide source, travel far, have strong penetration, and are not easy to attenuate. ”

"Once it interferes with the normal function of the human nervous system, it will endanger human health, and it will make people dizzy, nauseous, vomiting, loss of balance and even mental depression like poisoning symptoms. ”

After listening to this, Lu Weiwei suddenly felt very insecure: "No, these natural disasters you mentioned, as well as these man-made activities, don't seem to be in this area." ”

"There's only one possibility. After Gu Chen finished drawing the last few strokes on the drawing board, he threw the brush into the pen holder and said, "That is, in the ancient temple, someone must have installed an infrasonic generator, this kind of thing is a prohibited item and can only be purchased from illegal channels." ”

Gu Chen stood up and pointed in the direction of the ancient temple: "If you can give us some more time yesterday, you may be able to find it." ”

These clues are also Gu Chen's calculations after sorting out all the clues last night and this morning, and then using master-level reasoning.

And using entry-level imagination, the judgment reached after a scenario simulation of last night's situation.

Officer Wang stopped painting, shook the brush, stood up directly, and said indignantly: "It's still the same sentence, if you can't catch this mysterious person, my old Wang will eat this drawing board." ”

Lu Weiwei also said: "If I can't catch the mysterious person, I will go to the desert to count the sand." ”

The two of them looked at Gu Chen at the same time.

"Senior Brother Gu, you can also make a statement. Lu Weiwei said.

Gu Chen scratched his head and hesitated for a few seconds, then said, "If I can't catch the mysterious person, I'll go to the Pacific Ocean...... Measure the sea?"

Lu Weiwei and Officer Wang burst out laughing......

It was really difficult for Gu Chen to express his position.

Lu Weiwei suddenly looked at the landscape sketches on Gu Chen's drawing board, and couldn't help but be surprised: "Senior Brother Gu, what are you painting?

Then, she looked at the ghost drawing talisman drawn by Officer Wang, and said, "Lao Wang, what kind of thing are you drawing?"

......

......

After dinner, Gu Chen gave the landscape sketch he had drawn in the morning to the old lady.

In fact, Gu Chen has admired the wandering painter Aguta since he was a child, and he is also quite talented in painting.

Among the three, it is not an exaggeration to say that Gu Chen is a real art student, and the works are not to mention.

In order to dispel the old lady's concerns, and also to convince her that the three of them really came here to sketch, at least they needed to express themselves.

After dinner, the three of them went out on the pretext of painting night scenes.

But everyone's destination is still the ancient temple of yesterday.

Because they have a certain understanding of the infrasonic generator, the three of them are no longer as scared as before.

Staying there for a short time, coupled with the fact that his body was strong, the infrasonic waves did not cause serious harm to Gu Chen.

Therefore, Gu Chen took a big bag of stones and walked into the ancient temple while it was still dark.

It didn't take long for him to come to the path that passed through the ancient temple and joined Officer Wang and Lu Weiwei.

"Senior Brother Gu, can you really catch the mysterious person with those stones?" Lu Weiwei couldn't understand Gu Chen's operation all the time.

But Gu Chen always has a little bit of truth in doing things.

"If the mystery man is coming tonight, there must be a way to find him. Gu Chen said.

A long time passed, and time passed minute by minute......

Eight.

Nine.

Ten o'clock.

Eleven.

The stars in the sky are in the Beidou......

The three of them lurked on the road to the ancient temple, and more than four hours had passed, but there was still no movement.

Lu Weiwei was a little impatient and asked Gu Chen, "We are here, will we be affected by infrasound?"

Gu Chen shook his head: "I can't guarantee it, but there is a distance from the ancient temple here, and the distance from Liucun is also close, so it should be relatively safe." ”

"Lu Weiwei, if there is an impact, we will not stay here for four hours and be safe. Officer Wang also comforted her.

After all, once bitten by a snake, I was afraid of grass ropes for ten years, and this psychological shadow is understandable.

Another hour passed, until just after the early hours of the morning, a strange scream suddenly came from the direction of the ancient temple.

With the spread of the empty valley, it makes people feel creepy to hear, and goosebumps on the body can't help but arise.

But this time, compared to yesterday, everyone will be somewhat mentally prepared.

"He's coming, the mystery man is coming. Gu Chen whispered.

"It looks like I'm coming from another place. Officer Wang also judged from experience.

"Since he can stay there and pretend to be a ghost, presumably the infrasonic generator device at this time may have been turned off by him for a short time, and he will be arrested at this time...... It should be the safest. Gu Chen took out the strong flashlight and asked Officer Wang, "Senior Brother Wang, are you going?"

"Go, of course. "Officer Wang is feeling full of energy now, and he can't wait to appear in front of the ancient temple now, and then give the mysterious man a set of military body punches.

According to the plan, Lu Weiwei has to respond on the periphery, and once the situation changes, she will even provide support.

And once the mysterious person wants to escape, there must also be a secret observation post, to accurately grasp the whereabouts of the mysterious person, so that there is no leakage.

After the division of labor was completed, Gu Chen and Officer Wang walked in the direction of the ancient temple.

After a while, the strange sound also ended......

And at this moment, Officer Wang and Gu Chen also touched the periphery of the ancient temple, and the two of them were lying in the weeds, observing every move in the ancient temple.

A minute later......

From the side of the dilapidated ancient temple, a man in black wearing a peaked cap poked his head out mysteriously.

After observing for dozens of seconds, he cautiously walked out, put the speaker back into the pre-dug cellar, and removed the charging equipment.

At the same time, he returned to the ancient temple and tossed for a while, before leaving the ancient temple and cautiously leaving towards a path.

"It must have turned on the infrasonic device, we need to get out of here right now. Gu Chen reminded.

"Keep up with him. "Officer Wang can't wait.

Follow the path that the mysterious man left until he came to a narrow passage of the river.

The mysterious man stepped on a few towering rocks, crossed the river, came to a willow tree by the side of the road, and pushed out a mountain bike parked there.

Then, ride your bicycle and drive in the direction of Meishan Town.

"This guy is really cunning. Gu Chen couldn't help but be impressed by the wit of the mysterious man: "Riding a bicycle, you can eliminate the noise to the greatest extent, this guy is really painstaking in order to pretend to be a ghost." ”

"Then what are you waiting for? There is only one road in the direction of Meishan Town, let's catch him, and we will definitely catch him." "Officer Wang now feels that victory is in sight.

It's like a monkey who can't escape the palm of a Buddha......

Just do it.

Back at the Liuqiao on the river outside Liucun, Lu Weiwei had already pushed a motorcycle and rushed to pick her up.

This was borrowed in advance by the three of them from an old man's house next door to the landlord......

Although it is a little worn out and the lights are not easy to use, the performance is not bad.

In the afternoon, Officer Wang rode it around Liucun a few times to get through the so-called short run-in period.

So the three of them got on the motorcycle and chased all the way along the road to Meishan Town.

Mystery people are cunning.

In a spacious wooded area four kilometers from Liucun, a small black car is parked.

After putting the bike in the trunk, the mystery man drove away, but apparently spotted the motorcycle behind him.

The mystery man lowered the brim of his hat, sped up the car, and soon distanced himself from the motorcycle and disappeared into the night.

"This guy is cunning. The driver, Officer Wang, looked annoyed: "If I had a car, I would definitely catch up with him." ”

"Senior Brother Wang, don't worry, I have all the license plates. Gu Chen's response behind him came from his ears.

"Isn't it? This black light is blinding, can you read the license plate? Do you have a 30x digital zoom in your eyes?"

Officer Wang won't believe it......

My eyesight is pretty good, but if you want to see the license plate, it's absolutely impossible.

Normal people can have this kind of eyesight, but at present, Officer Wang really hasn't found out.

But Gu Chen wouldn't tell him that he had a visual clipping function, and his eyes had their own high-definition pixels.

Just when Officer Wang was chasing all the way, Gu Chen had already taken a picture of the license plate information.

The result of the analysis is: 70% probability of WS987, 20% probability of WS997, 10% probability of WS887.

With this kind of basic judgment, it is not difficult to find a car.

Even if there are many similar license plates in the country, it is not very difficult to find such a similar license plate in Meishan Town.

"The license plate is probably WS987, a black three-box sedan, let's look for it according to this standard. Gu Chen said.

Officer Wang did not speak, and continued to ride the motorcycle, doing an overload exercise during the extraordinary period.

The town of Meishan has arrived.

On the streets, you can occasionally hear a lot of dogs barking, and there are basically no pedestrians on the road.

With street lights, everything brightens.

As soon as Officer Wang reached the intersection, he was attracted by a black sedan parked in front of a grocery store.

"Lu Weiwei, what's the license plate of that black car?" Officer Wang asked weakly.

“WS...... 987?" Lu Weiwei replied incredulously: "Isn't this the license plate number that Senior Brother Gu reported just now?

Not to mention Lao Wang, now even Lu Weiwei is shocked.

The heart said that it would take good eyesight to do this?

However, Gu Chen's focus was not on this car, but on this shop, and casually reminded: "Senior Sister Lu, do you remember here?"

Lu Weiwei recalled for a few seconds, and then said: "This is where we take a taxi, you have also bought things in this store, and the boss is a one-eyed dragon." ”

"That's right. Gu Chen nodded and said, "Since this car is parked here, does it have something to do with the owner of this store?"

"Don't worry about it so much, go and investigate it to find out, I can remember what kind of body shape that guy is. Officer Wang immediately tidied up his clothes and prepared to take Gu Chen and Lu Weiwei to knock on the door.

"Bang bang bang!"

Officer Wang knocked loudly.

The stray dog on the side of the road barked at him in fright, but there was still no movement inside.

Officer Wang continued to knock for a minute.

"Who?"

The lights suddenly turned on on the second floor, and a middle-aged man shouted impatiently, "Who's knocking on the door?"

Officer Wang didn't respond, and he still kept knocking "bang bang".

Lu Weiwei panicked and said, "Senior Brother Gu, if we can't find out the problem, we can be regarded as disturbing the people!"

"There's no way, there's only one chance, and if you miss it, it may not exist. Gu Chen said.

Officer Wang also comforted: "It's okay, I'll take the responsibility, everyone just find someone." ”

It didn't take long for the one-eyed dragon boss to open the door, and he couldn't help but be stunned when he saw the three of them staring at him: "You...... Who are you? What are you doing knocking on my door in the middle of the night?"

Officer Wang had a cold face, pointed to the black sedan at the door, and said, "This is your car?"

"I didn't ...... That's right, what's wrong?" said the one-eyed dragon boss stunned.

"Did you just drive out?" asked Lu Weiwei again.

The one-eyed dragon man was obviously a little frightened, and said angrily, "Who are you? What does it have to do with you that I can't get out of the car?"

Before he finished speaking, Officer Wang had already hung his people's police card in front of him.

"Police...... Police?" The one-eyed dragon boss was momentarily dumbfounded.

"Is this car yours?" asked Officer Wang.

"Yes...... Yes. The man may be a little flustered, speaking incoherently, as if trying to quibble, but he is in a hurry and does not say well.

"What are you doing when you go out tonight?" Gu Chen asked again.

The man smiled bitterly and said, "I've been sleeping, I don't know what you're talking about." ”

"You don't have to argue. Gu Chen pointed to the black sedan and said, "The car is still hot, and this car has just turned off not long ago." ”

......