Chapter 641 Second Search of Qian Dakang's HomeQian Yu was brought back quickly. He was at the school and was easy to find. Zhuo Yun said that no noise was made when he was bringing him back. The other party was very cooperative and did not resist at all.
He didn't even ask the police why they took him away.
After arriving at the Municipal Bureau, Qian Yu went directly into the interrogation room and was handcuffed like his father.
Even with the handcuffs stuck on his wrists, Qian Yu still had that expression, not saying a word, not asking a single question. This was not a normal human reaction.
The preliminary hearing begins.
Chen Yi and Lu Zhengkai came to the observation room and looked closely at the young man sitting in the interrogation room.
Qian Yu looks pretty good, with clear yet gentle features, and he is clean-cut like a boy next door. However, the seldom expression on his face makes him look less approachable, and he seems quite aloof and steady beyond his age.
"Name."
……
"age."
……
"Do you know why I brought you here?"
……
"Were you at your grandmother's house the afternoon before yesterday? Did you ever leave?"
……
"After leaving at nine o'clock in the evening, did you go straight home?"
……
“Have you ever met any strange people or seen any strange things?”
……
The interrogation was carried out according to the procedure. Qian Yu answered every question without hesitation. From beginning to end, there was not much expression on his face, only the occasional raise of the corners of his mouth, proving that he was still a person with emotions to some extent.
"Qian Yu is a very problematic person." Lu Zhengkai said in the observation room. "Generally, when the police come to a house, they always ask for the reason if they have nothing to hide. But Qian Yu has never asked any questions so far. He just passively answered our questions, and... it seems that he was prepared in advance."
Chen Yi stared at Qian Yu for a long time and said, "Did you notice that he has a very strong psychological quality, or he has no fear. It's hard to imagine that a college student has such a strong psychological quality. I don't know what he has been through."
Lu Zhengkai said: "Looking at the files from the past, Qian Yu was only beaten, and there was no other kind of abuse. At least there is no record of this in the injury assessment report, and the suspect did not mention this in his confession."
The two of them just discussed whether Qian Yu might have been sexually assaulted in his early years, which led to psychological problems, and he has been venting his anger on innocent people to this day.
At that time, Qian Yu was less than ten years old.
From a psychological point of view, there is no problem with the logic, but the speculation does not match the files. He just suffered external injuries.
The interrogation lasted for an hour, and the interrogator asked the same questions over and over again several times, and repeated them in reverse, and got the same answers.
Even when they asked Qian Yu which road he took and which corner he passed in Xintou Town in a different order, he still didn't reveal any flaws.
This kid is quite good, smart and logical.
"Captain Chen, Lu Zhi, we have the medical records from the hospital."
The door of the observation room opened and a police officer came to report.
"Let's go to the meeting." Chen Yi turned around.
meeting room.
Everyone who should be there has arrived, and the personnel are all present, including Zhou Yebin and the entire special case team.
Displayed on the big screen were Qian Yu’s rescue and surgical records from that year, including monitoring records in the intensive care unit, which were very detailed.
Qian Yu's injuries were mainly in his brain, so he underwent a craniotomy. The success rate of the operation was not high, less than 50%.
He was lucky and the operation was successful.
Of course, this was also the suspect's luck, otherwise the suspect would not have faced the charge of intentional injury, but intentional homicide or manslaughter.
"This operation..." Chen Yi glanced at the detailed operation record. Although it was just text, it could fully restore the process at that time, saving the trouble of watching the video. "Sister Su, what do you think?"
Su Ying has more professional knowledge about medical surgery.
Su Ying had been thinking, and now faced with Chen Yi's question, she expressed her own opinion: "If Qian Yu is the murderer in this case, I agree with the judgment that it is the beginning of the serial killing.
You see, this operation is performed near the frontal cortex. When cutting the damaged tissue, if the doctor's hands shake a little, he will inevitably touch the amygdala. Once the amygdala is damaged, even if it is only a slight injury, it may cause irreversible effects on Qian Yu. "
Lu Zhengkai looked at Su Ying: "What impact?"
Su Ying said: "The function of the frontal lobe of the human brain is to make behavior subject to firm intentions and motivations. Damage to the frontal lobe will affect emotions for a long time. It depends on which part is injured.
It may affect mood, it may affect cognitive ability, and it may cause psychiatric symptoms.
Assuming Qian Yu is the murderer in this case, then the impact he has suffered is that he has lost the ability to perceive fear, so he kills without restraint and has no empathy or pity for the victims. To put it bluntly, it is as simple as... us normal people killing mosquitoes and cockroaches. "
Lu Zhengkai's expression became serious.
Would a normal person feel pity when killing a mosquito? Definitely not. Not only that, they would even hope that the mosquito died a more miserable death.
This is what cold-blooded serial killers are like. They kill people as if they were killing mosquitoes. It is difficult for outsiders to understand.
The complexity of the human brain and the human heart can never be studied thoroughly.
Su Ying's words made the members of the task force in the conference room feel scared. If it was true, then the consequence of not arresting Qian Yu as soon as possible would be that more victims would appear.
Just compare it to mosquitoes.
How many mosquitoes will a person kill in his lifetime? The number may be about the same as the number of lives that Qian Yu will kill in the future. It's chilling to think about it.
"This kind of thing... there is no evidence, right?" Lu Zhengkai said.
Su Ying: "No, how can there be evidence? It's just research. The research is credible, but it can't be put out in the open as one of the chains of evidence.
Also, some brain areas determine an individual's sexual consciousness. Once these areas are damaged, behaviors such as pedophilia and sexual violence will occur, which is consistent with Qian Yu's situation. "
Chen Yi said, "From another perspective, this is not Qian Yu's fault."
He was not speaking for Qian Yu. He was not speaking for Qian Yu. He was not a human being because he did not even let his child go. However, everything has its beginning and end. If Qian Yu had not been beaten in his early years, he would have been a normal person.
The conference room fell silent.
Will controls behavior. If the surgery causes brain damage, which indirectly leads to loss of will, then Qian Yu is equivalent to a man-made demon. He cannot control his own choices and suffers an unprovoked disaster.
But the law will not consider this, and the country will not consider this. There is only one way to deal with extremely dangerous people: disappear.
Natural born demons, artificially created demons, they are all demons.
If Qian Yu doesn't disappear, he will cause a big noise even if he is locked up forever. He might even resort to violence just because of a small quarrel or even just because he doesn't like someone.
Now we can explain why Qian Yu was so calm. Perhaps he was just like what Su Ying said, he didn't have the normal thinking and emotions at all. The police came and tortured him. He could keep a calm mind even when killing people, so why would he be afraid of the police?
Lu Zhengkai said coldly: "If he really has no emotions, why doesn't he dare to admit that he killed someone? I don't think he is stupid!"
Even the world's leading expert doctors could not tell the extent of Qian Yu's brain injury. Judging from the crime process, the suspect has the ability to counter-detection. Judging from the interrogation process, Qian Yu obviously did not admit his attitude. This means that he not only has the consciousness of killing without emotion, but also has the intention to escape legal sanctions.
Escaping legal sanctions may be to continue killing people.
"Yes, he is very clear-headed in this regard." Chen Yi said, "That is to say, as long as we can find evidence, we can still break through his psychological defenses and get a confession. This is the only way. It is probably not possible to rely on interrogation alone. This guy is probably more durable than our most experienced detective."
Lu Zhengkai nodded.
The evidence is the tools used to commit the crime, including the murder weapon, the clothes worn during the crime, condoms, etc.
"Do you want to check where he bought the condoms?" He looked at Chen Yi.
After interrogation, we learned that Qian Yu did not have a girlfriend, so there was no point in him buying condoms, which could be used as a point of interrogation.
I checked on my phone and there was no order record, so I must have bought it from the store.
Three locations.
The first is Qian Yu’s home, the second is Qian Dakang’s repair shop, and the third is Qian Yu’s school. After visiting and investigating around these three places, the possibility of finding the person is relatively high.
Read the error-free version at 69shuba! 6=9+shu_ba is the first to publish this novel.
Chen Yi did not suggest: "This is not direct evidence, it may not be of much use to Qian Yu... So, I will take people to Qian Dakang's home first, and Qian Yu will continue the interrogation and keep in touch."
Lu Zhengkai: "Are you going there in person?"
Chen Yi: "I have nothing to do anyway, I'll go take a look, give me five technical detectives.
The first search did not collect DNA, so this time we need to search the entire bathroom."
Lu Zhengkai immediately understood: "Qian Yu might take a shower after returning home?"
He killed four people in a row using violent methods. It is impossible that Qian Yu had no traces on his body. If he went home and took a shower, there might be DNA residue in the bathroom.
The DNA of the four victims would be evidence if one of them was found.
Chen Yi nodded: "Let's give it a try. We can't miss any possibility."
Lu Zhengkai: "Okay, thank you for your hard work, Captain Chen."
……
Soon, a total of eleven people from the special case team and technical investigation team drove to Qian Dakang's house.
Having already searched once, the second search should pay more attention to details, pay attention to points that are easy to overlook, and not just do it blindly.
Qian Yu’s room is the focus.
The five surveyors went directly to the bathroom and collected samples in every corner, including the sink. This is a basic skill for surveys and everyone is very skilled at it.
The task force still has sufficient funding, the municipal bureau laboratory must cooperate unconditionally, and the testing costs have long been reduced, so there is no need to worry about too many samples.
Cast a wide net, what if you catch fish?
Qian Yu's bedroom.
Qin Fei and four others stood at the door. Chen Yi walked in by himself. His target was clear: drawers and wardrobe.
Drawers and wardrobes are the only places where you can hide things, and they cannot be seen unless they are opened.
Chen Yi judged that Qian Yu was very likely to have brought the murder tools back home, and then was discovered by Qian Dakang. After questioning, Qian Yu admitted to the murder.
So, Qian Dakang did all those cool things afterwards.
The room was not well lit, so Chen Yi took out his cell phone, turned on the flashlight, and carefully checked every corner of the wardrobe and drawers, especially the empty spaces.
There is definitely no obvious trace, otherwise Lu Yongqiang should be able to find it. Now we need to pay attention to the subtle details.
Time passed slowly, and Chen Yi looked very slowly, from the wardrobe to the drawer, and finally came to the bottom layer of the desk drawer.
He was half-lying on the ground, the light was only a few centimeters away from the wooden board, it was very clear, and moving slowly as if scanning.
Finally, the action paused on the side plank, as if discovering something.
Chen Yi changed into a comfortable position, repeatedly confirmed the point less than one millimeter in front of his eyes, and said, "Qin Fei, Han Jun, come here."
The two people at the door immediately went into the house.
"Team Chen."
Chen Yi sat up and pointed at the small spot on the side of the drawer and said, "It should be the point where the knife tip pierced. If it was a murder weapon, there might be blood inside the board. You should remove the entire board and bring it back to the bureau for a careful inspection. Be careful not to destroy the traces."
"Yes!"
The two took orders.
Chen Yi left the bedroom and stood at the door waiting.
During the disassembly process, He Shixin spoke up: "If it was a trace left by the murder weapon... Qian Yu took the murder weapon home and put it in a drawer, intending to find a way to deal with it the next day, but Qian Dakang found it, is that right?"
Chen Yi nodded: "Yes."
He Shixin: "So with Qian Dakang's involvement, the murder weapon was disposed of that night? He certainly wouldn't allow the blood-stained objects to remain at home. Compared to Qian Yu, he doesn't have such a strong psychological quality.
Check all the surveillance cameras nearby that night, maybe we can find something?"
Chen Yi hummed.
"I'll go to the property management right away." Without any instructions, He Shixin turned around and left.
Teng Dabin and Su Ying were not idle either and followed.
The drawer side panels were quickly removed. After the bathroom samples were collected, Chen Yi asked Qin Fei and others to return to the bureau for testing, while he went to the property management.
When the three new people were checking the surveillance.
Surveillance, drawer dividers, toilet.
As long as there is progress in one of the three directions, the case will achieve a breakthrough.
Chen Yi did not join in, but waited on the side, and during this time he left the monitoring room to smoke a cigarette.
About half an hour later, when the screen was paused, a car appeared in the still screen, leaving the community and heading north.
The north is the direction of Xintou Town.
The time was three four in the morning.
"Captain Chen, we found out." He Shixin said, "We need to go back to the bureau to check the national highway surveillance to see where Qian Dakang went."
Xintou Town has a low urbanization rate, many crop plantations, and wilderness, making it very suitable for throwing or burying things.
The clues and inferences matched.
It is impossible for Qian Dakang to go out for a ride when he drove out at three in the morning. It is basically certain that he drove out to deal with Qian Yu's crime tools.
Check the surveillance cameras along Qian Dakang's driving route. It would be best if we can capture him parking. If not, lock down an approximate area based on the time, and then mobilize police dogs to form a huge encirclement and conduct a carpet search. We should be able to find him.
Chen Yi turned around and left: "Collect the team."
(End of this chapter)
He didn't even ask the police why they took him away.
After arriving at the Municipal Bureau, Qian Yu went directly into the interrogation room and was handcuffed like his father.
Even with the handcuffs stuck on his wrists, Qian Yu still had that expression, not saying a word, not asking a single question. This was not a normal human reaction.
The preliminary hearing begins.
Chen Yi and Lu Zhengkai came to the observation room and looked closely at the young man sitting in the interrogation room.
Qian Yu looks pretty good, with clear yet gentle features, and he is clean-cut like a boy next door. However, the seldom expression on his face makes him look less approachable, and he seems quite aloof and steady beyond his age.
"Name."
……
"age."
……
"Do you know why I brought you here?"
……
"Were you at your grandmother's house the afternoon before yesterday? Did you ever leave?"
……
"After leaving at nine o'clock in the evening, did you go straight home?"
……
“Have you ever met any strange people or seen any strange things?”
……
The interrogation was carried out according to the procedure. Qian Yu answered every question without hesitation. From beginning to end, there was not much expression on his face, only the occasional raise of the corners of his mouth, proving that he was still a person with emotions to some extent.
"Qian Yu is a very problematic person." Lu Zhengkai said in the observation room. "Generally, when the police come to a house, they always ask for the reason if they have nothing to hide. But Qian Yu has never asked any questions so far. He just passively answered our questions, and... it seems that he was prepared in advance."
Chen Yi stared at Qian Yu for a long time and said, "Did you notice that he has a very strong psychological quality, or he has no fear. It's hard to imagine that a college student has such a strong psychological quality. I don't know what he has been through."
Lu Zhengkai said: "Looking at the files from the past, Qian Yu was only beaten, and there was no other kind of abuse. At least there is no record of this in the injury assessment report, and the suspect did not mention this in his confession."
The two of them just discussed whether Qian Yu might have been sexually assaulted in his early years, which led to psychological problems, and he has been venting his anger on innocent people to this day.
At that time, Qian Yu was less than ten years old.
From a psychological point of view, there is no problem with the logic, but the speculation does not match the files. He just suffered external injuries.
The interrogation lasted for an hour, and the interrogator asked the same questions over and over again several times, and repeated them in reverse, and got the same answers.
Even when they asked Qian Yu which road he took and which corner he passed in Xintou Town in a different order, he still didn't reveal any flaws.
This kid is quite good, smart and logical.
"Captain Chen, Lu Zhi, we have the medical records from the hospital."
The door of the observation room opened and a police officer came to report.
"Let's go to the meeting." Chen Yi turned around.
meeting room.
Everyone who should be there has arrived, and the personnel are all present, including Zhou Yebin and the entire special case team.
Displayed on the big screen were Qian Yu’s rescue and surgical records from that year, including monitoring records in the intensive care unit, which were very detailed.
Qian Yu's injuries were mainly in his brain, so he underwent a craniotomy. The success rate of the operation was not high, less than 50%.
He was lucky and the operation was successful.
Of course, this was also the suspect's luck, otherwise the suspect would not have faced the charge of intentional injury, but intentional homicide or manslaughter.
"This operation..." Chen Yi glanced at the detailed operation record. Although it was just text, it could fully restore the process at that time, saving the trouble of watching the video. "Sister Su, what do you think?"
Su Ying has more professional knowledge about medical surgery.
Su Ying had been thinking, and now faced with Chen Yi's question, she expressed her own opinion: "If Qian Yu is the murderer in this case, I agree with the judgment that it is the beginning of the serial killing.
You see, this operation is performed near the frontal cortex. When cutting the damaged tissue, if the doctor's hands shake a little, he will inevitably touch the amygdala. Once the amygdala is damaged, even if it is only a slight injury, it may cause irreversible effects on Qian Yu. "
Lu Zhengkai looked at Su Ying: "What impact?"
Su Ying said: "The function of the frontal lobe of the human brain is to make behavior subject to firm intentions and motivations. Damage to the frontal lobe will affect emotions for a long time. It depends on which part is injured.
It may affect mood, it may affect cognitive ability, and it may cause psychiatric symptoms.
Assuming Qian Yu is the murderer in this case, then the impact he has suffered is that he has lost the ability to perceive fear, so he kills without restraint and has no empathy or pity for the victims. To put it bluntly, it is as simple as... us normal people killing mosquitoes and cockroaches. "
Lu Zhengkai's expression became serious.
Would a normal person feel pity when killing a mosquito? Definitely not. Not only that, they would even hope that the mosquito died a more miserable death.
This is what cold-blooded serial killers are like. They kill people as if they were killing mosquitoes. It is difficult for outsiders to understand.
The complexity of the human brain and the human heart can never be studied thoroughly.
Su Ying's words made the members of the task force in the conference room feel scared. If it was true, then the consequence of not arresting Qian Yu as soon as possible would be that more victims would appear.
Just compare it to mosquitoes.
How many mosquitoes will a person kill in his lifetime? The number may be about the same as the number of lives that Qian Yu will kill in the future. It's chilling to think about it.
"This kind of thing... there is no evidence, right?" Lu Zhengkai said.
Su Ying: "No, how can there be evidence? It's just research. The research is credible, but it can't be put out in the open as one of the chains of evidence.
Also, some brain areas determine an individual's sexual consciousness. Once these areas are damaged, behaviors such as pedophilia and sexual violence will occur, which is consistent with Qian Yu's situation. "
Chen Yi said, "From another perspective, this is not Qian Yu's fault."
He was not speaking for Qian Yu. He was not speaking for Qian Yu. He was not a human being because he did not even let his child go. However, everything has its beginning and end. If Qian Yu had not been beaten in his early years, he would have been a normal person.
The conference room fell silent.
Will controls behavior. If the surgery causes brain damage, which indirectly leads to loss of will, then Qian Yu is equivalent to a man-made demon. He cannot control his own choices and suffers an unprovoked disaster.
But the law will not consider this, and the country will not consider this. There is only one way to deal with extremely dangerous people: disappear.
Natural born demons, artificially created demons, they are all demons.
If Qian Yu doesn't disappear, he will cause a big noise even if he is locked up forever. He might even resort to violence just because of a small quarrel or even just because he doesn't like someone.
Now we can explain why Qian Yu was so calm. Perhaps he was just like what Su Ying said, he didn't have the normal thinking and emotions at all. The police came and tortured him. He could keep a calm mind even when killing people, so why would he be afraid of the police?
Lu Zhengkai said coldly: "If he really has no emotions, why doesn't he dare to admit that he killed someone? I don't think he is stupid!"
Even the world's leading expert doctors could not tell the extent of Qian Yu's brain injury. Judging from the crime process, the suspect has the ability to counter-detection. Judging from the interrogation process, Qian Yu obviously did not admit his attitude. This means that he not only has the consciousness of killing without emotion, but also has the intention to escape legal sanctions.
Escaping legal sanctions may be to continue killing people.
"Yes, he is very clear-headed in this regard." Chen Yi said, "That is to say, as long as we can find evidence, we can still break through his psychological defenses and get a confession. This is the only way. It is probably not possible to rely on interrogation alone. This guy is probably more durable than our most experienced detective."
Lu Zhengkai nodded.
The evidence is the tools used to commit the crime, including the murder weapon, the clothes worn during the crime, condoms, etc.
"Do you want to check where he bought the condoms?" He looked at Chen Yi.
After interrogation, we learned that Qian Yu did not have a girlfriend, so there was no point in him buying condoms, which could be used as a point of interrogation.
I checked on my phone and there was no order record, so I must have bought it from the store.
Three locations.
The first is Qian Yu’s home, the second is Qian Dakang’s repair shop, and the third is Qian Yu’s school. After visiting and investigating around these three places, the possibility of finding the person is relatively high.
Read the error-free version at 69shuba! 6=9+shu_ba is the first to publish this novel.
Chen Yi did not suggest: "This is not direct evidence, it may not be of much use to Qian Yu... So, I will take people to Qian Dakang's home first, and Qian Yu will continue the interrogation and keep in touch."
Lu Zhengkai: "Are you going there in person?"
Chen Yi: "I have nothing to do anyway, I'll go take a look, give me five technical detectives.
The first search did not collect DNA, so this time we need to search the entire bathroom."
Lu Zhengkai immediately understood: "Qian Yu might take a shower after returning home?"
He killed four people in a row using violent methods. It is impossible that Qian Yu had no traces on his body. If he went home and took a shower, there might be DNA residue in the bathroom.
The DNA of the four victims would be evidence if one of them was found.
Chen Yi nodded: "Let's give it a try. We can't miss any possibility."
Lu Zhengkai: "Okay, thank you for your hard work, Captain Chen."
……
Soon, a total of eleven people from the special case team and technical investigation team drove to Qian Dakang's house.
Having already searched once, the second search should pay more attention to details, pay attention to points that are easy to overlook, and not just do it blindly.
Qian Yu’s room is the focus.
The five surveyors went directly to the bathroom and collected samples in every corner, including the sink. This is a basic skill for surveys and everyone is very skilled at it.
The task force still has sufficient funding, the municipal bureau laboratory must cooperate unconditionally, and the testing costs have long been reduced, so there is no need to worry about too many samples.
Cast a wide net, what if you catch fish?
Qian Yu's bedroom.
Qin Fei and four others stood at the door. Chen Yi walked in by himself. His target was clear: drawers and wardrobe.
Drawers and wardrobes are the only places where you can hide things, and they cannot be seen unless they are opened.
Chen Yi judged that Qian Yu was very likely to have brought the murder tools back home, and then was discovered by Qian Dakang. After questioning, Qian Yu admitted to the murder.
So, Qian Dakang did all those cool things afterwards.
The room was not well lit, so Chen Yi took out his cell phone, turned on the flashlight, and carefully checked every corner of the wardrobe and drawers, especially the empty spaces.
There is definitely no obvious trace, otherwise Lu Yongqiang should be able to find it. Now we need to pay attention to the subtle details.
Time passed slowly, and Chen Yi looked very slowly, from the wardrobe to the drawer, and finally came to the bottom layer of the desk drawer.
He was half-lying on the ground, the light was only a few centimeters away from the wooden board, it was very clear, and moving slowly as if scanning.
Finally, the action paused on the side plank, as if discovering something.
Chen Yi changed into a comfortable position, repeatedly confirmed the point less than one millimeter in front of his eyes, and said, "Qin Fei, Han Jun, come here."
The two people at the door immediately went into the house.
"Team Chen."
Chen Yi sat up and pointed at the small spot on the side of the drawer and said, "It should be the point where the knife tip pierced. If it was a murder weapon, there might be blood inside the board. You should remove the entire board and bring it back to the bureau for a careful inspection. Be careful not to destroy the traces."
"Yes!"
The two took orders.
Chen Yi left the bedroom and stood at the door waiting.
During the disassembly process, He Shixin spoke up: "If it was a trace left by the murder weapon... Qian Yu took the murder weapon home and put it in a drawer, intending to find a way to deal with it the next day, but Qian Dakang found it, is that right?"
Chen Yi nodded: "Yes."
He Shixin: "So with Qian Dakang's involvement, the murder weapon was disposed of that night? He certainly wouldn't allow the blood-stained objects to remain at home. Compared to Qian Yu, he doesn't have such a strong psychological quality.
Check all the surveillance cameras nearby that night, maybe we can find something?"
Chen Yi hummed.
"I'll go to the property management right away." Without any instructions, He Shixin turned around and left.
Teng Dabin and Su Ying were not idle either and followed.
The drawer side panels were quickly removed. After the bathroom samples were collected, Chen Yi asked Qin Fei and others to return to the bureau for testing, while he went to the property management.
When the three new people were checking the surveillance.
Surveillance, drawer dividers, toilet.
As long as there is progress in one of the three directions, the case will achieve a breakthrough.
Chen Yi did not join in, but waited on the side, and during this time he left the monitoring room to smoke a cigarette.
About half an hour later, when the screen was paused, a car appeared in the still screen, leaving the community and heading north.
The north is the direction of Xintou Town.
The time was three four in the morning.
"Captain Chen, we found out." He Shixin said, "We need to go back to the bureau to check the national highway surveillance to see where Qian Dakang went."
Xintou Town has a low urbanization rate, many crop plantations, and wilderness, making it very suitable for throwing or burying things.
The clues and inferences matched.
It is impossible for Qian Dakang to go out for a ride when he drove out at three in the morning. It is basically certain that he drove out to deal with Qian Yu's crime tools.
Check the surveillance cameras along Qian Dakang's driving route. It would be best if we can capture him parking. If not, lock down an approximate area based on the time, and then mobilize police dogs to form a huge encirclement and conduct a carpet search. We should be able to find him.
Chen Yi turned around and left: "Collect the team."
(End of this chapter)
