More than 2.5 kilometers do not need to be considered, even if they are riding a bicycle, they must make this call within 10 minutes, this is an urgent notice, and if you waste an extra minute, it may cause irreparable consequences.

Five minutes is the most probable.

The speed of bicycles in the city in this era takes about four minutes per kilometer, and the person who reports the news will not ride particularly fast, and it is easy to attract the attention of the patrol police if it is too fast, so Chu Lingyun drew these three circles, and the person who reported the news was basically within the range of these three circles.

It's a pity that it is impossible to confirm the time when Nanjing received the notice, otherwise the scope can be better determined.

And the place where the car was lost was on the edge of the first lap.

"Team leader, I'm back."

The loach knocked on the door and came in, Ren Han's fingerprints had been sent to the technical department, and by comparison, it was not the half of the fingerprints extracted from the car.

Ren Han's suspicion can basically be ruled out, and at the same time gave them a good news, the half of the fingerprint behind the bicycle lock is very likely to be left by the informant.

"Loach, you take someone to check how many businesses sell paint and use paint in this largest circle."

Chu Lingyun commanded, the scope has been decided, the next step is the investigation, the comparison of the technical department has not yet come out, but it will not affect their early investigation.

"Okay, just wait for my good news."

Loach happily accepted the order, the busier he was, the more fulfilling he became, this time it was the investigation of the Japanese spy, and now Shen Hanwen and Chu Yuan were not in the group, he was close to the water and got the moon first, and all the tasks were arranged for him.

In this way, the credit for his achievements will be greater.

"Ring, ring, ring."

Not long after the loach left, the phone on the table rang, and when he picked up the microphone, Team Leader Hu's voice came: "Team Leader Chu, the paint comparison results you sent are out, and I have already asked someone to send the report to you." ”

"Thank you, Team Leader Hu, if you can catch the Japanese spy this time, I will definitely help you with the technical department."

With the results of the paint, the direction of the investigation will be clearer, Chu Lingyun sent a favor in a timely manner, and Team Leader Hu grinned: "It's just a gesture, Team Leader Chu doesn't have to care too much." ”

After speaking, he seemed to be afraid that Chu Lingyun would really not help them ask for credit, so he hurriedly said: "If you really catch the Japanese spy, you can help us with a few kind words when the time comes." As you know, our technical department usually has few opportunities to make meritorious contributions, and if it weren't for Team Leader Chu this time, we wouldn't have such a good opportunity. ”

Chu Lingyun smiled: "Don't worry, you can't do it without your credit." ”

Two minutes after hanging up the phone, the technical department sent him the results of the paint comparison.

According to the technical laboratory comparison, there are two paints that are similar to those found on the bicycle saddle, and the other paints are not consistent.

If you want to determine which one of these two is exactly the same, you have to wait for the test results.

Comparing the two is already a good result, Chu Lingyun noticed that the price of these two paints is not low, and among all the paints purchased and compared, the price ranks second and third.

More than a dozen paints, this ranking is considered very high.

"Wang Sheng, give you a new task."

asked people to send the results of the comparison to the loach, and Chu Lingyun called Wang Sheng again.

Wang Sheng over there hurriedly replied: "Chief Chu, you command, no matter what the task, I promise to complete it for you." ”

In fact, the last time I found Jiang Binghui, I wanted to promote Wang Sheng during the New Year, although the police were not under their control, but it was very simple for the New Year to say hello and promote a deputy sergeant to sergeant.

It was Chu Lingyun who temporarily suppressed Wang Sheng's promotion, he had just been promoted to deputy sergeant not long ago, it was not a good thing if he was promoted too quickly, Chu Lingyun still had to look at his performance.

Recently, Wang Sheng's performance has been good, he has made meritorious contributions to the investigation of the Marine Police Bureau, and he has helped him find out Du Fang's weakness before.

If you want a horse to run fast, you must have no shortage of forage.

"You check, what are the lock-picking masters in the entire Nanjing City, whether it is a thief or not, as long as the lock-picking ability is strong, you have to ask it."

Chu Lingyun assigned him a task, Ren Han was not a Japanese spy, it was the person who reported the news who stole his car. When reporting urgently, he can still think of stealing a car, and this person has a strong psychological quality.

The location where he stole the car, probably very close to his location.

But only the location is not enough, but also to determine who the person who stole the car is, the loach investigates the clues of the paint, and the clues of the stolen car are handed over to Wang Sheng to investigate, and the speed can be faster.

"Don't worry, I'll be able to give you the result of this little thing tomorrow at the latest."

Wang Sheng is just investigating the person who will open the lock, which is really not a big deal for them police.

No matter how big you are, sometimes it is very difficult to find things when they are lost, but the police are different, they are very familiar with everything in the area, as long as they are stolen by someone, hand them over to the police, and they will definitely be able to find them for you.

The police in this era have a different relationship with those ruffians and hooligans on the street.

……

"Captain, this is a new clue that the team leader asked me to send you."

The Loach team finally found his captain, who sent him a comparison report of the paint.

"With a clear type of paint, it's easier to investigate."

After reading the comparison report, the loach grinned, there is a range, there is something to investigate, and then he only needs to contribute, and finding out the news is what he is best at, and he will soon find out the results.

In the evening, the loach came to Chu Lingyun's house to make a report.

"Team leader, in the largest circle you painted, there are a total of nine trading houses that sell these two types of paints, and most of their customers are carpenters or furniture factories, I checked their sales lists, and found that there are twenty-seven companies that buy these two types of paint."

"Of the twenty-seven houses, nine were carpenters, and of the fourteen furniture factories or furniture stores, only four of them bought them individually, and according to the shop, they all touched up the furniture or other things themselves."

It is not new for individuals to buy paint, and there are also people in later generations who buy it themselves and paint it themselves.

Whether it is an individual or a business, the number of 27 is not much, but the number is not necessarily small.

Furniture stores or factories, they can have more than one person inside.

"How many locations are there in Ren Han's lost car?"

Chu Lingyun took out the map and asked, and the loach immediately came over, pointed to the location where Ren Han lost the car and said, "There are two paint sellers around here, and there are six factories. There are quite a few furniture factories in this area, and it is a small concentration point, and there are also two people who buy paint separately who live here. ”

Two businesses, six factories, and two people are a total of 10 survey respondents, and they are the key targets of this survey.

"Tomorrow you will investigate them, mainly to check their people, and also to check if there are any people who are similar to the figure that the guy said, and if there are any, they will be marked out, and the focus will be checked."

Narrow down the scope and investigate secretly, as long as the person who reported the news is still in Nanjing City, Chu Lingyun believes that he will definitely be able to find him, no matter how cunning the fox is, as long as he leaves traces, he will not be far from being caught.

"Okay, team leader. Zhao Hua, I haven't finished copying it yet, so I'll send it to you when I'm done. ”

Loach responded, and Chu Lingyun shook his head: "That's not in a hurry, it's important to get down to business, find out the people first, don't waste time on Zhao Hua." ”

The money is very good, Chu Lingyun wants it very much, but now that time is pressing, it is most important to catch the person who reported to Liu Dazhuang as soon as possible, and determine the identity of Liu Dazhuang's traitor.

"Don't worry, team leader, I won't delay my business."

Loach said with a smile, he will carry out the task well, and there will be no delay in making money.

Early the next morning, Wang Sheng came to the Military Intelligence Department.

Whether it is in Wuhan or Nanjing, every time he goes to this unit, his heart will be a little hairy.

Now he is the deputy sergeant, and he knows more about the military intelligence department, and the power of this department is really amazing, especially their police, who can only be a man with his tail between his legs in front of this unit.

Don't look at him as just a deputy sergeant, now many people in the police department know that his background is in the Military Intelligence Department, and they are very polite to him, and no one in the bureau dares to offend him.

"Chief Chu, according to your request, I have already found out the person."

When he came to Chu Lingyun's office, Wang Sheng immediately bent down and put a list on his desk.

"More than three hundred, so many?"

Seeing the dense list, Chu Lingyun was stunned, there were so many lock-picking masters in Nanjing?

Wang Sheng nodded: "There are a lot, there are many people in Nanjing, and many little hooligans will steal things, and there are really a lot of people who can pick locks." ”

This is still as long as the lock picker, if you want to check the thief, the number is more, definitely more than a thousand.

Especially in places with a lot of people such as train stations, docks, shopping malls, etc., there are countless thieves.

"Let it go."

Chu Lingyun glanced at the list, not only their names, but also their residences, and some of them were marked with remarks, this list was very detailed, and it could be seen that Wang Sheng put his heart into it.

"Yes, Chief Chu, then I'll go first."

Wang Sheng said goodbye and left, and Chu Lingyun compared the map to find out the number of people living in the circle, especially near the lost car.

There were more than 50 people in the circle, which was quite a lot, but the number of people near the lost car was not much, only eight people.

These lists were also sent to the loaches.

"Team leader, I've found someone."

At noon, the loach rushed to the office, and Chu Lingyun raised his head.

"According to the list of unlocks you gave me, team leader, I found two people working in the furniture factory among the eight people, one is called Wu Da, and the other is called Hou Laosan, all of whom have been exposed to those two types of paint."

"I had the guy at the hotel called over and looked at them secretly, and the guy finally said that Hou Laosan was very much like the person who called.

"Then I investigated the whereabouts of Hou Laosan yesterday, and he was really not in the factory when I called. After that, I personally searched the house of the third child and found the hat, which was confirmed by the hotel guy that it was the one he brought when he called, but I didn't find the blue robe, which may have been destroyed by him. ”

"Did you find anything else?" Chu Lingyun asked.

"No, but according to my secret investigation, Hou Laosan's lockpicking skills are particularly good, and he has also taught several apprentices, who can be counted in Nanjing."

Loach shook his head, a master of lockpicking, had been exposed to paint, and the time of the call was not in the factory, which was indeed a major suspicion.

However, the Japanese spies are cunning, Chu Lingyun has never despised them, and he always feels that this candidate is a little easy to expose.

"Team leader, do you want to arrest someone?" Seeing that Chu Lingyun didn't speak, Loach hurriedly asked.

"Don't worry, who did he contact yesterday, and did he investigate what he did?"

Chu Lingyun shook his head and said, if Hou Laosan is the one who calls Liu Dazhuang, then someone must notify him of this information.

Whether it is sending someone to inform, or calling or radio, it is always one of them.

It is less likely to send someone to notify, not to mention the waste of time, it is better to send someone to call Liu Dazhuang directly, that is not more convenient.

Telephone calls are not secure, and military intelligence can easily find their phone numbers if they want to investigate.

Therefore, the radio notice is the most likely, and if it is inferred in this way, then Hou Lao San must have a radio station.

But they are in Nanjing, not their territory, and it is impossible for the radio station to be turned on and wait 24 hours a day, and how Shanghai has notified them so accurately, and the problems in this must be investigated clearly before they can take action.

If the caller is not Hou Laosan, it is very likely that he will be startled and will not be able to catch the person who is really calling.

Loach was stunned, and quickly replied: "I haven't checked who he has been in contact with, I'll check it now." ”

"I'll go with you."

Chu Lingyun got up, the more detailed the investigation, the more likely it was to find out the person who called.

Hou Laosan has a major suspicion, and the investigation of him cannot be stopped, but without perfect certainty, Chu Lingyun will not arrest people, so as not to go wrong and let the real Japanese spy escape.

"Team leader, that's the factory where Hou Laosan is located."

In the alley, the loach pointed to the gate in the distance and said to Chu Lingyun, this is a small furniture factory, similar to a family workshop, there are only seven people in the factory plus the boss, and Hou Laosan is a carpenter in the factory, and his skills are good.

Hou Laosan is forty-three years old this year, he was a gentleman on the beam in his early years, he was arrested several times, and later he washed his hands and learned the skills of a carpenter, and his current life is okay.

"Are you sure that Hou Laosan has been living in Nanjing?"

Chu Lingyun asked, the loach was slightly stunned, and immediately understood what Chu Lingyun meant.

If Hou Laosan has been in Nanjing and proves that he is a local, then he will not be Japanese, and people like Zhao Pinsong are extremely rare, and it is difficult to have a second one.

And Hou Laosan is not trafficked, he has parents.

"At present, it is confirmed that he has been in Nanjing, team leader, will Hou Laosan be a stand-in like Yang Jian, let him make a call at a critical moment, and only use it once?"

Loach said his guess that Hou Laosan was not Japanese, but he might be a person who was bought to help the Japanese do things.

Loach thought differently from Chu Lingyun, no matter how he looked at Hou Laosan, he was like the person who called to inform Liu Dazhuang.

"No, it won't." Chu Lingyun shook his head affirmatively.

Liu Dazhuang's identity is very important, and the Japanese will definitely not arrange a stand-in to make emergency retreat arrangements, in that case there are too many variables.

Once Hou Laosan fails to complete the task, Liu Dazhuang may be arrested at any time.

The one who called Liu Dazhuang was definitely Japanese.

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Chapter 175: Someone Found Free Reading.