A new police officer joins the team and solves a major dismemberment case

"What's the use of a dead mosquito?" Han Xu looked at the excited Song Jiaer in confusion, not quite understanding why she was so happy like a child.

Song Jiaer smiled and replied, "You don't know this, I thought you knew everything."

"Don't keep me in suspense, just tell me quickly."

The cramped space in the secret room made Han Xu a little upset.

Song Jiaer smiled and said nothing, which whetted someone's appetite.

Han Xu saw that Song Jiaer didn't explain, so he pouted and stopped asking. Who made him keep people in suspense? Sooner or later, he would have to pay for his troubles.

"Okay, I'll tell you," Song Jiaer was not like Han Xu, who was a careless person who couldn't hide things. Seeing that Han Xu didn't ask, she felt a little uncomfortable, "Don't think that this is a dead mosquito, it may become a very critical evidence?"

"Really?" Han Xu was not proficient in trace inspection, but the system gave him some basic knowledge, so he had a general understanding.

Song Jiaer smiled and said, "A few years ago, a senior had extracted the victim's DNA sample from the blood of a killed mosquito. I'll go back and try it. The current technical means are much more powerful than before. If this mosquito has bitten the person living here, then..."

Han Xu listened to Song Jiaer's explanation and didn't understand the importance of this dead mosquito!

It's like picking up a big treasure!

If this mosquito accidentally entered the secret room during its survival and bit the person living in it, and died from the counterattack of the person bitten, then the mosquito is likely to have the person's blood in its body.

As long as there is blood, it is possible to extract DNA samples even after a period of time.

However, it is very difficult to extract human DNA samples from another organism, and it is not just talk.

Han Xu looked at Song Jiaer in surprise, "Is this possible?"

Song Jiaer pouted, "Why, don't you believe in my technology?"

"That's not the case, but this way of handling cases is the first time I've seen it!" Han Xu was not sure about the feasibility of extracting DNA samples from mosquitoes.

Song Jiaer ignored someone and carefully placed the dead mosquito that was hard to find into a container similar to a petri dish. Then, she professionally processed the remaining traces on the top of the bulkhead and extracted some valuable samples.

After all the work, Han Xu couldn't get a word in, so he had to focus on lighting Song Jiaer.

After Song Jiaer finished all this, she conducted a carpet inspection of other missed corners, but there was no other gain.

"Okay, the inspection is over," Song Jiaer wiped the sweat from her forehead with Han Xu's handkerchief and put it in her pocket, "We can go back!"

Han Xu didn't see Song Jiaer's little action, nodded when he heard it, and went out of the cabin secret room first.

When Song Jiaer was about to follow, Han Xu suddenly stopped.

The handsome forehead immediately hit the broad back.

"What are you doing? Why did you stop suddenly?!" Song Jiaer was hit hard this time.

Han Xu didn't expect Song Jiaer to hit him head-on, so he turned around and took a light source.

Song Jiaer's forehead was red, as if she had hit a piece of iron.

"Are you okay?" Han Xu was at a loss.

Although Song Jiaer was not too big, she was very strong. She was a black belt in karate. It was just that the blow just now was too sudden, and she didn't realize it at all. However, what she didn't expect was that Han Xu's back was like a wall, and she just hit him stupidly.

At this time, her forehead was burning and felt swollen.

"I said, why is your back as hard as iron? It hit me to death!"

"Oh, it's so serious?" Han Xu carefully checked Song Jiaer's forehead, "It's all my fault. I'll take you to the hospital."

"That's not necessary. I said why did you stop suddenly?" Song Jiaer rubbed her forehead and asked.

"I just wanted to take a photo and show it to Wei Daguang!" Han Xu smiled awkwardly, but he didn't expect Song Jiaer to bump into him suddenly.

"You should have said it earlier. When I just came down, I had already taken photos and fixed them." Song Jiaer's professionalism is beyond doubt.

...

Waiting for the two to come out of the secret room, the time has come to more than 11 o'clock in the morning.

Under Liu Zeyu's concerned gaze, one was at a loss, and the other covered his forehead with his hands. The two seemed to have done something wrong.

Liu Zeyu was embarrassed to ask, and changed the subject, "Did you gain anything?"

Han Xu nodded, "There are some gains, we are going to go back to the office for testing and comparison."

Liu Zeyu's brows relaxed when he heard that there were considerable gains.

"However, you still need to stay here for a while. If I am not mistaken, this is already the crime scene." Han Xu said seriously.

Liu Zeyu nodded, "Okay, we will take turns to look after this place."

Song Jiaer on the side packed up the large survey box she brought with her, indicating that Han Xu could go back.

Han Xu exchanged a few more pleasantries with Liu Zeyu before following Song Jiaer off the boat.

"How is it? Does it still hurt? Or, let's go to the hospital!" Han Xu was unsure about the injury on Song Jiaer's forehead, and couldn't help but feel a little worried.

Song Jiaer seemed fine. Although her forehead was swollen, it didn't affect her work.

"Do we need to go to the hospital? I was injured a lot when I was practicing Sanda before, and I just sprayed some white medicine on it."

Han Xu felt really bad for causing Song Jiaer to get hurt, and took the investigation box from Song Jiaer, "Are you really okay? It's all swollen!"

"Hey, why are you so fussy? I said it's okay, so let's go, I still have a lot to do when I get back! Don't waste time!" Song Jiaer frowned, and pulled Han Xu to the parking place without saying anything.

Han Xu had no way to deal with Song Jiaer, so he had to follow her and prepare to rush back to the police station.

Han Xu was still driving, although he was not as stable as Chengzi, but his driving skills were okay, at least he saved a lot of time.

It just took 20 minutes to get back to the police station.

Song Jiaer got out of the car and hurried back to the technical building with the large investigation box.

Han Xu wanted to follow him, but Song Jiaer stopped him, "I'm not that delicate, you should do whatever you need to do, I can apply the medicine myself later."

Han Xu was about to say something else, but Song Jiaer ran away.

Just at this moment, Li Le came back from outside, and he poked his big head out of the Ford Raptor, "Hey, you are waiting here? He has already run away! Why are you so reluctant to let him go?"

Han Xu looked back at Li Le, "Are you itching for trouble?"