After Xue Feng explained the whole story of the transaction with Liu Kun, I then asked him how he went to Liu Kun's house last 3 and what he went to do.

"In the middle of the night, I climbed through the back window on the second floor of my house to my neighbor's house, and then went out through the back door of my neighbor's house, but the police on guard didn't find me."

"Didn't alarm the neighbors?" I'm a little curious.

"There was no one at his house, and I knew in advance that I wouldn't be going out for those two days."

"You're quite capable, and you can find out about your neighbor's house when you're being watched." I'm kind of impressed with him.

"Hey, hey, get lucky. After I came out of my neighbor's house, I climbed in the backyard of Liu Kun's house, and walked around his house, but I didn't see anyone else, so I went back the same way, changed into 4 taxis and left Shanghai until I was caught by you. ”

"What are you looking for Liu Kun for?"

"Ask him for some money and run away."

I saw that there was nothing more to ask, so I motioned for him to come here first, and as I left the interrogation room, I suddenly remembered about the perfume, so I casually asked him about the source of the perfume. Xue Feng said a little unnaturally, where did he get the goods from Liu Kun, but he didn't know where Liu Kun got the goods.

Leaving the interrogation room, I returned to the Thirteenth Section with Wu Shaodong, and in the office he asked me what I thought. I told him that there was not much water about human trafficking, but my intuition told me that Xue Feng was a little evasive, as if he was hiding something. Wu Shaodong said that outside he watched the whole interrogation process through a microphone and double-sided glass, and he could also sense what Xue Feng was hiding.

I looked at the time and it was already more than 7 o'clock in the evening, and asked Wu Shaodong if he could get off work, he nodded and asked me to go back directly.

Back to the Huandao Garden, it was almost 8 o'clock, Jiang Lina and they were still sitting on the sofa waiting for me to have dinner, I was a little heartbroken and told him not to wait for me in the future, I couldn't control the time after work.

After dinner, we went back to our rooms to rest.

On the morning of the second day, Wu Shaodong interrogated Xue Feng again and questioned the suspicious points in several cases. After the interrogation, he had a brief meeting in the office of Section 13.

"At present, Xue Feng has pleaded guilty to human trafficking, and from his mouth, he has dug up the information of the family and the middleman involved in this transaction, and the information of these people has been handed over to the Pan Bureau, which will report it to the local authorities according to their location." Wu Shaodong gave us a brief account of Xue Feng's human trafficking case, and then talked about Liu Kun's matter:

"Regarding Liu Kun, there is still no news so far. Today is the 6th day, and all the bus stations, railway stations, airports and various passages out of the city have no clues about the development of Liu Kun. The city's road surveillance also found nothing, and I'm curious now how he managed to avoid all the surveillance equipment. ”

Wu Shaodong raised questions, and everyone also felt confused, according to the current urban monitoring facilities, it is impossible to leave no traces at all.

"Boss Wu, what if Liu Kun had an accident or accident during the absconding process?" Huang Xiaosong first put forward his own views.

Li Rusong rushed in front of Wu Shaodong and replied, "That little coward, there are some possibilities for what you said, but there will be no one alive and no corpse dead." But whether he had an accident or not, there will always be some traces, Liu Kun's house is clean, and there is no trace of an accident at all. ”

After listening to Li Rusong's explanation of the sentence "Liu Kun's house is clean", Wu Shaodong's eyes lit up at the same time.

"Lao Cheng, we should have missed an important clue." Wu Shaodong looked at me and said.

I nodded and replied, "That's right, it seems that Xue Feng is not just as simple as concealing it, this kind of human trafficking involving more than a dozen people has been admitted, which is enough for him to stay in prison for the rest of his life." If, I mean, if Liu Kun didn't abscond, but ......"

Wu Shaodong stared into my eyes and said, "The timing of Liu Kun's absconding is not good, so far, the clues in our hands have not accurately pointed to him killing people, at most, it is human trafficking, and it is not enough to be a capital crime." And Xue Feng was not arrested at that time, he had no reason to abscond! There was no trace of absconding from the traces of Liu Kun's home, and my intuition told me that Liu Kun's disappearance was not due to Xue Feng or was directly related to him. ”

"Why don't you go and interrogate Xue Feng again?" Li Rusong said to me.

Qi Shuguo vetoed another arraignment for me" It doesn't mean much, according to Xue Feng's character, he won't say it. ”

"Lao Qi, aren't you good at micro-expression analysis? You can see if Xue Feng is lying. ”

Qi Shuguo replied lightly, "Xiao Li, micro-expression analysis can see whether Xue Feng lied or not, but he can't see what he wants to hide, even if it can be inferred that he wants to hide something, we have no evidence, and the law does not recognize it." ”

Li Rusong heard Qi Shuguo say this, and helplessly spread his hands and said, "That is, there is nothing to do with him?" ”

At this moment, a knock on the door interrupted our discussion, and Wu Shaodong habitually frowned and said, "Please come in!" ”

A police officer opened the door and stood at the door and said, "May I ask which officer is Cheng Cheng, your girlfriend is looking for you." ”

Immediately, in my bewildered state, a mature beauty in her twenties and less than thirty, with long burgundy hair, wearing a white shirt with a waist-cinching beige suit and a black one-step skirt, walked towards me with a smile.

I stood up awkwardly and said to her, "Ye Lili, why are you here?" ”

Ye Lili passed by me and ignored me, walked directly in front of Wu Shaodong, smiled and stretched out a white and slender little hand and said to him, "Hello, you are Captain Wu, right?" ”

Wu Shaodong also stretched out his hand with a confused face, but was pulled away by Chen Xinying on the side, looked at her vigilantly and asked, "Who are you?" One will look for Cheng Cheng, and the other will look for my brother-in-law? ”

"You are Xiaoying, don't worry, I have no intentions for your brother-in-law, I just want to thank Captain Wu for taking care of my brother Cheng." Ye Lili explained to Chen Xinying with a smile.

Seeing that she and everyone in the office were introducing themselves individually, Li Rusong pulled me aside, hooked my neck, and whispered, ", I said Lao Cheng, you can do it, this is your eldest wife, right?" Look at it, these big eyes, the straight bridge of the nose, tsk, and the lips of that character, I ...... obediently."

I pushed him away and said angrily, "Don't talk nonsense, calf! He's the sister of my comrade-in-arms! ”

"Gah? It's not you woman, hehe, what, can you consider my brother ......and me," Li Rusong pretended to be shy when he heard this, and lowered his head and said to me.

I glanced at him and ignored him directly, walked up to Ye Lili and asked her, "Why are you here?" ”

Ye Lili shrugged helplessly and said, "The plane arrived early, I saw that the time was still early, and I came directly to you, huh?" You won't forget that I'm coming to Shanghai today, right? I'm so sad! It turns out that I have no place in your heart! She feigned sadness and sobbed slightly.

I looked embarrassed and really forgot, but I didn't admit it and said, "How could I forget, how did I think your plane arrived early." We're still in a meeting, why don't you go to the break room and wait for me?" ”

After speaking, I took Ye Lili's hand, ignoring her resentment, and was about to send her away, but I was suddenly stopped by Qi Shuguo.

"Xiao Cheng, wait a minute."

Qi Shuguo stopped me and said to Ye Lili, "Miss Ye, I just heard that you have a laboratory at the University of Wisconsin, right?" What type of lab is it? ”

Ye Lili shook off my hand, smiled politely at Qi Shuguo and said, "Professor Qi, I am in charge of research in medicine and biology, do you have any questions?" ”

"So, I have a question for you, is there a way to show the traces of biological activity in a room?"

"Professor Qi, you are the predecessor of my brother Cheng, it would be too much to ask for advice," he glanced at me secretly, and then said to Qi Shuguo, "It's a little difficult for too long, if it's in the near future, it's still okay." ”

Qi Shuguo became interested when he heard this: "Oh? Is it difficult? I mean, with the technical level of our bureau, can it be done? ”

"It shouldn't be a big problem, if the materials are complete, there is still no technical difficulty in matching the reagents."

"Miss Ye, I have a reluctant request, can you please go to our laboratory to see if we can mix it?"

I suddenly understood Qi Shuguo's purpose a little, so I said to Ye Lili, "Ye Lili, if it's convenient for you, just help me try." ”

"You call me Ye Lili?" She asked me in surprise.

"Well, Lily, can you help me?" I said with a twitch in my mouth.

"Uh-huh, of course you can, who called you my brother Cheng? Oh yes! Remember the meal you promised me. Ye Lili replied satisfactorily.

Immediately, Wu Shaodong asked Chen Xinying to take her to the laboratory of the Municipal Bureau.

After Ye Lili left, Wu Shaodong asked Qi Shuguo what he thought, and Qi Shuguo replied:

"There is a point of view, and I think that as long as it exists, it will inevitably leave traces. Liu Kun's house is not without clues, and it is deeply hidden, we just didn't find it. ”

Qi Shuguo stopped to take a sip of tea and continued, "Liu Kun is a simple person with simple social relations, so the traces of life left in his family must be his own. If we can find a way to show the traces of his life, then it is very likely that we can deduce the clues of Liu Kun's disappearance. ”

Wu Shaodong nodded thoughtfully, "Well, if it can be done, even if you can't find clues about Liu Kun's disappearance, you can still enlighten the case." ”

"That's what I thought too." Qi Shuguo appreciatively agreed.

At one o'clock in the afternoon, Chen Xinying and Ye Lili returned to the office of the 13th branch and told us that the reagents were ready. Wu Shaodong asked Qi Shuguo and Huang Xiaosong to stay, and the rest of the personnel, including Ye Lili, went to Liu Kun's residence together.

At Liu Kun's home, Ye Lili, with the cooperation of Chen Xinying and the police officers of the trace examination department, sprayed reagents in various rooms. Taking advantage of this gap, Wu Shaodong asked me what I planned to do after the case was cracked. I thought for a moment and said to him, "I'm going to start investigating my sister's disappearance." ”

Wu Shaodong patted me on the shoulder and said, "If there is anything you need help with at that time, just ask." ”

"I will, thank you first." I was a little surprised that he was willing to lend a helping hand to me, someone who was somewhat responsible for the death of his fiancée.

He obviously saw my surprise and said to me calmly, "Don't think about it, I'm not helping Cheng Cheng, I'm helping my teammate Cheng Cheng." ”