The fact that this bombing came very suddenly, especially on this special day, made all of us feel the seriousness of the matter.

Because today is the seventh anniversary of the conclusion of the March 18 explosion case.

At present, the facts of the case are not yet clear, and the serious crime team and the criminal police team are investigating the case from different directions.

The first is to investigate the contents of the newspaper that filled the bomb.

Second: the motherboard of the mobile phone found at the scene of the investigation.

Third: Investigate the social relations of the exploding company.

Fourth, investigate whether there is any connection between this bombing case and the March 18 explosion seven years ago.

It boils down to three questions: Find out who made the bomb? Who installed it? When was it installed?

All departments of the Ningzhou Municipal Public Security Bureau are contributing their own strength to the investigation of this explosion case, and all departments are working closely together to find clues.

The first to have results was the Technical Investigation Bureau, which analyzed the model and content of the mobile phone chip through the mobile phone chip found at the scene of the crime.

"What? Motorola?! I frowned, puzzled by the answer.

Motorola is a wholly foreign-owned company integrating electronic communications, mobile communications and the Internet. Founded in 1928, it began to involve the mobile phone industry in 1946, and realized the first in-car call in January. In 2009, Motorola started using the A

d

oid operating system, several Motorola mobile phones became A

d

The best-selling product on the OID platform.

It can be said that in that era when the domestic mobile phone industry was not developed, Motorola was definitely half of the mobile phone industry, and the other half was still a name we are very familiar with - Nokia.

With the continuous update and development of the domestic mobile phone industry, Motorola and Nokia have gradually withdrawn from the domestic mobile phone market, but these two brands are still the benchmark of an era and the memory of a generation.

"yes, it's Motorola, and it's a very old model." Xiao Xuan nodded, operated on the keyboard, and searched for a mobile phone picture for me.

Xiao Xuan pointed to the picture on the computer screen and said to me seriously: "This is the one, Motorola SLVR L71, which is a music mobile phone that was discovered on the market in December 2006. ”

Music phone, this term already feels a little strange to me.

"Why is there a Motorola phone with such an old model at the scene of the explosion?" I looked at the picture on the computer screen and muttered a little puzzled.

Xiao Xuan suddenly turned his head, looked at me seriously, and said lightly: "This mobile phone should be used to detonate bombs, there is such a possibility in theory, but this is beyond my professional scope, you should find someone more knowledgeable to ask." ”

"Mobile phone detonated bomb...... But why Motorola? This style of mobile phone is simply not available at the moment, and any mobile phone can replace Motorola, why would the murderer do this? I rubbed my temples and thought about it.

The maker of the bomb pursues the power and lethality of the bomb, and the method of detonating it is only a matter of choice. Because they have 10,000 ways to detonate a bomb, whether it's timed, remote, or artificially triggered, or even more advanced ultrasonic triggers and electromagnetic wave triggers.

So, what is the meaning behind the murderer's final choice of a very old Motorola phone as a detonation tool?

Perhaps, I should pay a visit to Mr. Zhang Fengtian, a "bomb disposal expert".

Mr. Zhang Fengtian lives in the old town of Ningzhou City, and the Public Security Department has placed a property in the center of the city for a meritorious person like him, so that he will be very convenient to travel and do not need to ride a bicycle.

However, Mr. Zhang Fengtian was furious when he heard the special treatment given to him by the government, and he felt that he was humiliating himself and that he could not accept this special "care". He immediately found the person in charge and resolutely refused the care.

The Public Security Department had no choice but to withdraw the order and choose to take care of the old man from other aspects.

People like this who are indifferent to fame and fortune and do not take credit for themselves are the examples we can learn.

In order to find Mr. Zhang, it took me a lot of twists and turns to find Zhang Fengtian who was walking outside through the community neighborhood committee.

When I met him, he was pushing a bicycle with a net of crabs in the basket.

"Mr. Zhang, Qin Mu of my serious crime team." I hurried forward and greeted me warmly.

Zhang Fengtian is kind and kind-eyed, still full of energy when he is over seventy years old, and his spirit is no worse than that of us young people.

"Housheng, I'm afraid you smelled the fragrance of my crab." Zhang Fengtian joked with me with a smile.

"I'm here for something I'd like to ask you about, but if there's crabs to eat, that's great!" I said with a smile.

I thought to myself, there is no crab fragrance now, only the smell of fish.

Mr. Zhang Fengtian and my master Shen Ruoshan are old acquaintances, and in terms of age, Zhang Fengtian is nearly ten years older than Shen Ruoshan.

"Good! All right! Then let's go home and talk, and talk while eating! Zhang Fengtian smiled, very happy and hearty.

In this way, I followed Zhang Fengtian around and walked into a building.

Mr. Zhang Fengtian's house lives on the second floor, and when he went upstairs, I could clearly feel the traces of age on his body, even though his mentality was still young and optimistic, but he had obvious leg and foot inconvenience.

He took a bunch of keys from the belt around his waist to open the door, and as soon as he entered the door, he shouted, "Wife! There are guests in the house. ”

After a while, a woman came out of the kitchen, she was Zhang Fengtian's wife, and she used to be a clerical in the archives department of the Ningzhou Public Security Bureau, and the two also became acquainted because of their work.

"Who is this?" The woman looked at me and felt very strange to me.

"Hello aunt, I am from the Serious Crime Team of the Public Security Bureau, my name is Qin Mu, you can call me Xiao Mu." I greeted her very politely.

"He is Lao Shen's apprentice, Lao Shen, Shen Ruoshan." Zhang Fengtian changed into a pair of slippers and handed the net pocket in his hand to his wife.

Shen Ruoshan is my master, and many people know me because of Shen Ruoshan, although this has brought me a lot of convenience in my work, after all, everyone still gives Shen Ruoshan a lot of face. But I don't like it very much, and I want people to know me through my ability to work.

"Oh oh, sit down, I'll wash some fruit for you." The woman nodded and walked into the kitchen with her net bag.

"Auntie, don't bother." I hurriedly spoke.

Zhang Fengtian pulled me to sit on the sofa, always with a smile on his face, and he kept sighing: "I haven't had guests at home for a long time, and only people come to my family during the New Year's holidays, but all who come are section chiefs and bureau chiefs, and they say some official words, which is very annoying!" ”

He picked up the thermos cup on the table, took a sip, and then said: "I hope that all of you who come here are those of you who are working on the front line." Maybe I'll be able to help you a little bit, but I'm not old enough to be forgotten. But there are some people who hide any cases from me, and they still say that they are taking care of my body. What do I need to take care of? I'm in good health! ”

After listening to Mr. Zhang Fengtian's words, I felt a sense of heroic twilight in him.

Although it is not as exaggerated as the unfulfilled ambition and the end of the road hero, there is always a sentence echoing in my ears:

"Lian Po is old, can you still eat?"