Shen Jingye organized the information page by page and came to Li Qi's office.

"Bureau Li, Du Wenming is on vacation."

"When did you retire?"

"Yesterday, starting from Monday, actually starting from last weekend, he took a week's leave. In other words, when Yu Yaoming was kidnapped, he had no alibi!'

Li Banfeng said: "Isn't it Du Wenming who called you today and asked you to attend the meeting?"

"That's because something happened in the laboratory, and his vacation was suspended. When he called me, he had just returned to the office."

Li Banfeng said earnestly: "Comrade Xiao Du is familiar to us. Isn't it a bit inappropriate to list him as a target of suspicion just because he took two days off?"

Shen Jingye looked at Li Banfeng. These words were obviously not what Li Banfeng should have said. These words should have come from the mouth of the superior.

Li Banfeng was helping Shen Jingye respond. If he wanted to formally investigate Du Wenming, or even arrest Du Wenming, someone would definitely come forward to obstruct him. This was a problem he had to face.

"I not only have an alibi, but also other clues."

"No matter how many clues we have, we can't unjustly accuse a good person," Li Banfeng said in a deeper tone, "Colleagues all know that Xiao Du is not a dark person and cannot use his dark abilities!"

Shen Jingye gave Li Banfeng a piece of information: "According to the official resume, although Du Wenming is not a dark person, he has worked in the Customs and Defense Department for a long time, and most of his work experience comes from Puluo Prefecture, which gives him the qualifications

The conditions for becoming an engineering practitioner."

"It's not enough to just have conditions. Where's the evidence?"

Shen Jingye took another piece of information: "Du Wenming is a radio amateur. He has joined two radio amateur groups."

Radio enthusiast?

Li Banfeng wanted to ask a question, but did not ask because the question might reveal his age.

Radio enthusiasts are a special group active in the 1980s. They have mastered a certain degree of communication knowledge and use the radio equipment they have assembled to communicate with other enthusiasts through radio signals in different frequency bands.

In an era when the Internet was not yet popular, this method of communication could not meet in person, but you could hear each other's voices, which was obviously better than traditional pen pals. However, because the threshold of the radio circle was too high, its coverage was very limited.

Li Banfeng looked at the relevant information: "In this day and age, there are still people playing with radios?"

Shen Jingye said: "This circle has always been very active. We feel unfamiliar because we know too little about them.

Last month, Du Wenming also purchased a batch of components through a radio amateur organization. This is the list."

Li Banfeng looked at the list: "They still use vacuum tubes? These devices can be put into museums."

Shen Jingye said: "I just learned that in the radio industry, there is this retro fashion of using original equipment.

The radio amateur group Du Wenming joined is legal, and the components he purchased are also legal.

However, many of these relatively primitive electronic equipment are not produced according to standard standards, and are very difficult to use and assemble. This proves from one aspect that Du Wenming understands a certain degree of craftsmanship."

Li Banfeng frowned and said, "Xiao Shen, this is too far-fetched. You can't just say that someone can make a radio equipment, just say that they are a repairman, right?"

This tone is very similar to some of Shen Jingye's superiors. Li Banfeng is right. If you want to launch an investigation into Du Wenming, these questions are unavoidable.

But Shen Jingye can only do this one step: "With the current situation, there are only so many clues that can be grasped. With Du Wenming's identity, it is unrealistic to arrest him for interrogation, and it is impossible to get permission to search his home.

Including the investigation of those around him and related organizations, it can only go so far. Du Wenming is an expert. If he continues to investigate in depth, he will definitely alert the snake."

Li Banfeng glanced at the equipment list again.

Du Wenming likes radio, is it really just a hobby?

Is this necessarily related to his kidnapping of Yu Yaoming?

Li Banfeng couldn't come up with a clue just relying on his own thinking. This kind of matter must be handled by professionals.

The Dark Star Bureau also has communications professionals, and Shen Jingye called Cheng Zhiyuan, the backbone of the communications department.

Cheng Zhiyuan read the list for a long time and introduced the functions of each component: "The main function of the rectifier tube is to convert alternating current into direct current. The function of the amplifier tube is to amplify the audio signal. The function of the frequency converter tube is -"

Shen Jingye frowned and said, "Who told you to say this? I heard you came to class? I want to ask you, what can the components on this list be made of?"

Cheng Zhiyuan looked at it for a moment longer, shook his head and said, "I can't tell."

Li Banfeng asked: "You really can't tell, or do you dare not say it?"

Cheng Zhiyuan shook his head and said with a wry smile: "Director Li, you are making things difficult for me."

Both Li Banfeng and Shen Jingye understand this technical backbone.

It's like someone buying a few pieces of glass and a box of glue. He probably wants to make a handmade fish tank, but he may also want to make a handmade mirror. Or he may not make a mirror or a fish tank, but just wants to put it on the table.

piece of glass.

Normally, everyone would just chat and give an inference, but in the Dark Star Bureau, a wrong inference could have serious consequences, so Cheng Zhiyuan said nothing before receiving a formal order.

But under the current situation, Shen Jingye couldn't issue a formal order, so Li Banfeng simply took the list and went to find his own channels.

He also has experts who may not be familiar with advanced equipment from other states, but for this kind of antique equipment, Luo Zhengnan is an expert among experts.

Back at his residence, Li Banfeng called Luo Zhengnan and told him the contents of the list.

After Luo Zhengnan heard this, he was a little confused: "Master Qi, what this person bought is a bit fragmented. I can only make a rough inference.

These things can be used as TV antennas, radios, and for more advanced ones, they can also be used as radio telescopes.

But judging from my experience, the probability of making a radio is higher. I have such a radio on hand and will show it to you another day."

"Don't wait for another day. I'm quite anxious here. Let's go and take a look today." Li Banfeng arrived at Lushui City via Tiemenbao, and Luo Zhengnan had the radio ready.

In the eyes of young people, the radio is either installed in the car or held in the hands of the park man, which is about the size of a palm.

The radio Li Banfeng saw this time was taller than him and about the same size as his wardrobe at home.

Luo Zhengnan opened the back cabinet door of the radio and introduced the components one by one.

"The electrical signal in Puzhou is very weak. The semiconductor materials from other states don't work. The electronic tube has good response characteristics in the high frequency band. Moreover, this thing has good stability and is not picky about the environment. It is not as good as the new equipment from other states.

delicate,

Vacuum tube equipment is also easy to maintain. If a tube breaks, just replace it. Unlike those high-end equipment, if one tube breaks, you have to replace a large piece."

Li Banfeng roughly understood. He turned on the phone, but only heard a series of noises.

"Master Qi, don't worry, the signal received by electronic equipment alone is still very limited. If you want to listen to the radio in Puozhou, you need some special materials." Luo Zhengnan took a wooden box, took out an antenna from the box, and connected it

on the radio.

This antenna is very special, it's the one he usually plugs into his head.

After plugging in the antenna, carefully turning the knob, the radio finally found the station.

Amidst the cheerful sounds of gongs, drums and flutes, Li Banfeng heard an advertisement:

"Brother, why aren't you harvesting your sorghum?"

"I don't dare to collect it. I just chopped down Uncle Liu at the entrance of the village two days ago, and his body is still lying in the field. Once the sorghum is harvested, the body cannot be hidden. Liu will definitely not let me go!"

"Just hiding it like this is not a solution. Have you ever used Ma Laosan's Corpse Transformation Spirit? Take a spoonful and it will be clean. There will be no dregs left. It will leave a little bit of soup and water, which will seep directly into the soil. There is no need.

You clean it up!"

"Is he really that smart?"

"Time-honored brand, old sign, I am his regular customer, how can I still lie to you?"

Li Banfeng opened his mouth when he heard the advertisement: "Can this kind of medicine be advertised publicly?"

Luo Zhengnan smiled and said: "We in Puzhou have this kind of custom. Everything we do must be straightforward."

Li Banfeng was very angry: "This is not a matter of being straight or not, it's that the medicine itself is unreasonable. Do you know how precious the corpse is? He melted it with just a spoonful of medicine. Using this medicine is a waste. That's right.

What a waste of resources!"

Luo Zhengnan was a little confused: "After killing the person, what should I do with the body?"

"Leave it to me. I have a lot of good ideas. Let's make an advertisement tomorrow -"

Before he finished speaking, a sweet voice appeared on the radio.

"Dear listeners, my name is Ah Hui. It's the busy farming season of the year. I would like to say thank you for your hard work to all my farming friends."

Hearing this voice, Li Banfeng was stunned for a long time.

Luo Zhengnan smiled and said: "Master Qi, does this sound sweet? This is the best anchor in the entire Puozhou."

"The best?"

"Isn't it? Please listen again."

The sound quality of the radio is a bit rough, but it can't hide the sweetness of the voice: "During the busy season, the mentality is easy to change. When you have conflicts with others, you must think twice before acting.

Wait another two months and it will be the snowing season. Regardless of old or new grudges, it is best to resolve them in the snow to facilitate the disposal of corpses and other aftermath matters——..."

Li Banfeng looked at the antenna on the radio carefully: "With this antenna, can I also receive this station from other states?"

Luo Zhengnan nodded and said, "You can call me from other states. It's the same principle."

"What material is this antenna made of?"

Luo Zhengnan hesitated for a moment.

Li Banfeng said: "It doesn't matter if you don't want to say it, you don't have to force it."
To be continued...