But think about it, my dad is a police officer, my mom is a professor of criminal psychology, but you know, my cousin is only twenty years old this year, wait, twenty years old...... Isn't she still in college, how did she become an expert in criminal traces?

Thinking of this, I stepped forward and grabbed Chen Qianqian's arm and pulled her aside directly.

"Yo, isn't this my dear cousin, what, did you miss my cheap sister?"

This is the first sentence that Chen Qianqian said when she saw me after four years, with sarcasm and provocation, but I am also used to it, when she was at home before, she seemed to only use her hands and not her mouth, and it was much better to move her mouth than to use her hands.

I looked at the girl in front of me, who should still be studying at a university in the United States, and asked in a low voice: "Aren't you supposed to be in college now, why did you come back and become an expert?" Chen Qianqian, I warn you, don't play any tricks, pretending to be a police officer, you will suffer a lawsuit. ”

"I said cousin, I didn't see that you were so brave before, let me tell you, I didn't pretend to be a police officer, I have completed all the courses in the school and graduated early, and when I was in the United States, I have already taken all the qualifications, this time I came back, in addition to seeing my aunt, I also found this temporary job, you see, I am affiliated with the public security bureau of this city, what is the problem, go and ask your director, what is the matter with bullying such a little girl as me. ”

I was speechless to refute Chen Qianqian's righteous words, and in desperation, I could only ask her to return to the manhole cover again to check the real truth of the explosion.

"There is only one explosion point, that is, the back side of the manhole escalator, after the explosion, the entire sewer wall is cracked, tomorrow we will let the city construction personnel to strengthen the sewer, during which it is best not to go down, one side of the sewer collapses, and also, the explosion used *for*, although the power is not large, but it is enough to blow up the people who are close to *, I believe this is an attempted murder, Officer Fang, you have to be careful." ”

At this time, the members of the explosion-proof team slowly came up from the sewer wearing explosion-proof suits, and one of the men, who seemed to be the leader of the explosion-proof team, said to me before leaving.

I nodded, and was about to thank the man for the reminder, but when I glanced at it, I caught a glimpse of Chen Qianqian going down the manhole into the sewer.

I frowned slightly, quickly took off my coat and threw it to Li Yan, and then followed Chen Qianqian down the sewer.

"Didn't you hear from the explosion-proof team? This place could collapse at any moment. "After entering the sewer, I saw that Chen Qianqian had been looking at the explosion site with a flashlight, and at this time, the underground sewer had already been in a mess, and the flashlight was shining on it, and the walls that had not been blown up were also contaminated with the splashed sewage, and the walls on all sides were more or less contaminated with excrement.

I think the explosion team should only mean that wall, that side, which has been inlaid with * and just detonated on the wall.

I turned to look at Chen Qianqian, she was wearing a pair of white plastic gloves on her hands, and on the bridge of her nose, I don't know when, she had already erected a pair of transparent glasses that completely covered her eyes.

I stood by and didn't speak, I was making all the preparations for what would happen if this wall collapsed, and if this wall collapsed, according to the height of this wall, I might have escaped if I had pulled her away in time.

Thinking of this, I let Chen Qianqian go and look around, after all, I am her brother, and protecting her safety is always the first thing.

"Found ......"

At this time, Chen Qianqian was holding a flashlight in her left hand, and her right hand was against a certain part of the wall, and she turned to me and said.

I walked to Chen Qianqian's side in confusion, followed her hands and walked towards the wall she was holding onto, that piece of wall had been blown into a large hole, and her small hands pressed on the wall next to the hole.

"What is this?"

There was half a hole about the size of a little finger where she was pressing, yes, only half, and on the other side of it, the bleed-out wall.

Immediately afterward, she told me that the eye on the bridge of her nose had been brought back from the United States, and that with it, she could see all the sources of heat clearly.

"Heat?" I asked, looking at the half-hole in confusion.

Chen Qianqian nodded and said: "Although the power is not great, but after the explosion, the heat energy will last for two hours, I don't believe that the person who placed * placed one here is to want to blow you up, and you came to the scene to improvise, there was a murder here yesterday, and the explosion was triggered today, so I speculate that the person who placed * should be the same as the person who killed the woman, and after the body was found, he ventured into the crime scene again, it must be to destroy some important evidence." ”

I raised my eyebrows slightly, pointed to the half of the hole, and asked Chen Qianqian in disbelief, "This is what you call evidence?"

"What's the matter? Unconvinced? Look for yourself, this wall is very flat, except for the big hole that was blown up in the middle, and the depressions next to this hole are in an irregular state, but you look at this small hole, it is very flat around it, as if someone deliberately dug it, and I don't know why, the heat in this small hole is actually higher than the heat in the big hole, this is not scientific, unless, this half of the hole was originally installed with some scientific instruments, in * At the moment of detonation, the scientific instruments inside spontaneously combusted when heated, you see, the traces around the small hole are in the shape of trumpet flowers, it should be that something was originally installed inside, and at the same time as the * explosion, it also caused an explosion in this small hole. ”

I touched the traces around the half of the hole, and indeed, I was powerless to refute it, because her analysis was reasonable, but what was it that was inside the hole before?

If the murderer had put something in this small hole, then this thing should have been there on the day we found the body, otherwise the murderer would not have had to risk destroying this thing, but when our police investigated the scene, they didn't find anything suspicious.

I asked my colleague to borrow a magnifying glass, then looked left and right with a flashlight, and said suspiciously, "This hole is so small, what can it hold?"

Chen Qianqian glanced at me, and then said with a playful smile: "Although this hole is small, you see, it is deep, it should be a long thing, and it is very long, well, according to trace science, this person who placed * must have wanted to destroy the things that were originally placed in this hole." ”

I sat and watched with my arms crossed, and walked back and forth behind Chen Qianqian in galoshes, when suddenly, with a click, I seemed to have stepped on something under my feet.

I bent down to salvage, but I salvaged something that looked like plastic fragments, the fragments were small, silver, because the fragments had almost been blown to pieces, so I could only see some black characters similar to English fonts from the edges and corners of the fragments.

As for what is written on it, I don't know.

"Why don't you think from the beginning that the perpetrator of the bombing was not to cause panic among the citizens, but to think that he was destroying some evidence?" I looked at Chen Qianqian and asked slowly.

The latter went up and glanced at me and said, "If he wants to cause panic in the city, he won't just put one*, this is something that even a three-year-old child can guess, how can you not guess when you are such an old person?"

To be honest, I always feel that she came back this time and I don't know her a little, and I don't think that with her temperament back then, she will be willing to return to China for development, after all, she desperately wanted to follow my little aunt to study abroad, and, even if she chose to come back, why should she come to me instead of choosing to return to the place where she lived since she was a child?

On the way back, Li Yan kept wanting to talk to Chen Qianqian, but it seemed that people didn't take him seriously, and throughout the trip, she sat silently beside me with her eyes closed, not arrogant or impatient, even if Li Yan kept talking to her, she didn't hear it.

This is going to change the previous Chen Qianqian, Li Yan estimated that she had already kicked out of the car door at this time, where could she sit in the police car and constantly harass her, so I think that either she encountered something abroad, or, what she is thinking about now is something more important than beating Li Yan.

At nine o'clock in the morning, the police car slowly stopped at the door of the criminal investigation brigade, Li Yan and I got out of the car first, because Chen Qianqian said that she had to go to the General Bureau, I just simply instructed a few words, so that she was empty to call me, I had something to say to her, and then let the police car drive away.

"Hey, do you think I have a play?" Looking at the back of the police car, Li Yan pulled me a little impatiently, and asked expectantly.

I glanced at him, then took out the evidence bag with scattered fragments, and said softly: "There are more important things waiting for us to do, if you think you really love her, I don't mind telling Fang Yuan, you don't even have to handle the case for a woman." ”

After saying this, I turned around and walked towards the main hall, and Li Yan said as if he really didn't have a chance, and then followed in my footsteps and came to our respective seats.

For the next hour, Li Yan and I laid the pieces flat on the table, and then, relying on our four hands, we tried to put the pieces together one by one.

"I said, this one can't try, and it doesn't work, will you be mistaken, there is so much garbage over there, if it's really garbage from the sewer, wouldn't we be wasting time?"

After trying for half an hour, Li Yan finally put down the fragment and wanted to give up.

"Do you think that something in the sewer can be so shattered? Even if it is a thing that was intact, stepped on by someone from above, do you see for yourself, these splinter marks look like?" I took the last small piece and carefully pieced it together with tweezers, and then I let out a long exhale.

"FC&XOWP" Li Yan frowned and looked at the English characters on the piece of debris in front of me, saying character by character.

Suddenly, his eyes widened, and he glanced at the character, then at my face, and after three back-and-forth rounds, he spoke, "It can't be so evil, FC, this ...... Isn't that the initials of your name?"