Siheyuan: Superintendent at the beginning, wife Reba!

"What? What did you say, Uncle Qin?" After hearing what Uncle Qin, the concierge, said, Zhang Chengfei stared at him and almost fell off the car.

Uncle Qin touched his nose in embarrassment, "Deputy Section Chief Zhang, please stop teasing me. I know you heard..."

"Don't worry, I'm a man of honor. As long as you help, I won't treat you badly." He said, pointing to the big white pear.

It was brought to him by his granddaughter who worked as a salesperson in a supply and marketing cooperative. He was reluctant to eat it and reserved it specially for Zhang Chengfei.

There was still a better one left, and he was going to leave it to Jia Zhang.

Zhang Chengfei looked at Uncle Qin with complicated eyes, "No, uncle, can you tell me what you like about Grandma Banggeng?"

On that day, Mrs. Jia Zhang went to the police station and acted violently. There was no room for her charm!

He is 1.5 meters tall and weighs [-] kilograms, which is crushing to death.

There's nothing much to say about his big yellow teeth and garlic nose.

The key is that the distance between the pair of triangular eyes is enough to build two viaducts! !

"Grandma Banggeng is about to be sixty. She is so fat, she is lazy about food, and she is also superstitious..."

Zhang Chengfei counted on his fingers, wondering if Uncle Qin had Alzheimer's disease.

Uncle Qin has a different view on this, "She has a lot of shortcomings, but she also has a lot of advantages."

"Advantages? Tell me a few and I'll listen." Zhang Chengfei listened attentively.

"Does this need to be said? Apart from shortcomings, aren't all the other advantages of a person?" Uncle Qin said plausibly.

Zhang Chengfei sighed and stuffed the big white pear back into Uncle Qin's hand, "Uncle Qin, I can help you with anything you ask me to do, but I can't help you with this matter!"

It’s not that I don’t want to help, I really don’t dare to help.

It is said that marrying an unvirtuous wife will destroy three generations. If he was a matchmaker, the old godly woman would go to the Qin family to commit evil. Looking back, the eight sons of Uncle Qin's family will not tear themselves into eight pieces?

But then again, there is Qin Huairu, Uncle Qin, Jia Zhang, this is the old Qin family of Tianke! !

After getting away from Uncle Qin, Zhang Chengfei picked up Reba and left.

Passing by the concierge and seeing the disappointed Uncle Qin, Zhang Chengfei sighed again.

But some people are busy and really can’t help.

Zhang Chengfei Reba went all the way to the Dongcheng District Branch. When he got there, he explained the reason and was taken to see Qin Zhiming.

The three of them met in Qin Zhiming's big office. They couldn't help but sigh when talking about the situation at that time.

"The situation was so critical at that time. If the gangster brought other bombs instead of black powder, then we would probably have to tell him where he was." Qin Zhiming said.

Zhang Chengfei shook his head, "If it weren't for black powder, I wouldn't have used that method."

"Oh? Have you seen it in advance?"

"Of course, I saw that his fingers were black at the time, and I saw... on his body that I judged that the bomb he made was a black powder bomb." Zhang Chengfei said briefly.

"You are quite careful in your observations." Qin Zhiming raised his thumb.

Zhang Chengfei continued, "In fact, when we handle cases, many things of criminals are traceable, such as handprints, footprints, traces of used tools, traces of used knives, guns and sticks, vehicles... in short In a word, everything you walk through will leave traces.”

"Studying and deciphering these traces can often provide us criminal investigators with clues and even key information."

Qin Zhiming felt that what Zhang Chengfei said was a bit complicated, so he scratched his head and thought hard.

Reba on the side had a clear look of stupidity on her face.

Although I don’t understand it, I always feel like it’s very powerful! !

Zhang Chengfei saw that neither of them understood, and was about to explain again.

A middle-aged man who was listening to them suddenly spoke up.

"Comrade, can you tell me what you think about the 'code trace'? Also, do you think it is the same thing as the traces you mentioned?"

Zhang Chengfei raised his head, "'Tracking' is a term proposed by the police in Mongolia in 1959. It is actually a footwork tracking technology. It mainly uses people's footprints, steps, etc. to infer the suspect's body shape, height, and footing habits. wait......"

"So far, 'marking' has been basically popularized across the country. But in my opinion, trace is a broad concept, and footprints are one of its branches. Therefore, 'trace' and 'coding' should have a mother-child relationship."

"Actually, I have been researching traces personally, but I lack more practical support and everything remains to be studied."

--Zhang Chengfei knows that in history, trace science really appeared in our country in the late 80s.

But he felt that since he was now proficient in trace science, he should try to promote the development of trace science in our country.

Therefore, according to his idea, at the right time, he would regard the knowledge of trace science as his own discovery and publish it to help more police officers.

The middle-aged man waited quietly for Zhang Chengfei to finish speaking, and then looked him up and down. "Are you a second-level superintendent? Why haven't I seen you in the branch?"

Before Zhang Chengfei could speak, Qin Zhiming hurriedly returned, "Deputy Director Meng, this is our comrade from Nanluoguxiang Police Station. Today I went to hunt down the enemy agent, and he..."

Qin Zhiming told what happened.

After hearing this, Deputy Meng pondered for a moment.

In fact, it is normal for police officers to make some judgments based on some traces of the scene environment when handling a case, but this has not always formed a specialized discipline.

In the 50s, our country absorbed the theory of footprints from Mao Xiongguo's "Crime Countermeasures" to create its own inspection work. Coupled with the emergence of "code traces" in 1959, footprint inspection has played an important role in our country's criminal investigation. Great effect.

but,

Zhang Chengfei said that the footprints are only a small part of the traces...

If traces could be promoted like ‘code traces’...

In just a short time, Deputy Director Meng's mind was filled with countless ideas, but these still need to be confirmed by a large number of specific cases and facts.

Thinking of this,

He looked at Zhang Chengfei and said, "Comrade Zhang Chengfei, do you want to be transferred to the branch?"

Their branch is in charge of all criminal cases in Dongcheng District. If Zhang Chengfei can come over, he can let him be responsible for the collection and research of traces.

Deputy Director Meng originally thought that Zhang Chengfei would definitely agree to his invitation because he loved studying traces.

Unexpectedly, Zhang Chengfei said directly, "No, I still like to stay at the police station."

"why?"

"what?"

Now not only Deputy Director Meng couldn't understand, but Qin Zhiming and Reba couldn't understand either.

As a police officer, who doesn’t want to help with a big case?

What's the point of worrying about trivial things all day long?

Besides, at the police station, where is the branch that has a future?

Zhang Chengfei looked at the three of them and said, "My parents are both dead, and there is only one grandma in the family. She is over 80 years old and could have taken care of her for the rest of her life, but she stayed in Sijiu City for me. I have to take care of her."

The work at the branch is much busier than that at the police station, and they often work overtime. It is common to stay up all night.

Zhang Chengfei felt that his predecessor had already given his life for the country, and now he should think about his grandmother.

Deputy Director Meng said, "But if you stay at the police station, you won't have much chance to show up at the scene."

Zhang Chengfei nodded, of course he knew this.

He wants a grandma, and he also wants trace studies.

Therefore, he needs a way to have both fish and cake.