"But every time I see you, I can't help but want to hug you and kiss you, what should I do?" Wei Chihong pretended to ask deeply.

Qiao Yan's face was slightly hot, don't turn around and ignore him.

Yu Chihong stretched out his hand to turn her body over, but just as Wan Xing walked in, he quickly retracted his hand.

"I saw Bureau Lee, and it looks like I'm coming to our office." Wanxing is here to report the news.

So when Li Haoxun walked into the office, he saw that Yu Chihong, Qiao Yan and Wan Xing were discussing something very seriously, and Wan Xing was also sitting in the middle of the two, so that they couldn't get close. The three of them pretended to have just found Li Haoxun coming in, and they all stood up and greeted him.

Li Haoxun didn't have anything special, but he just happened to be free to care about the special investigation team. Mo Yuqing almost died, and the case had not been solved yet, so he knew that the pressure on the special investigation team must be very great.

"Where's Zeng Jinling?" Li Haoxun asked.

"Professor Zeng went to an important academic conference in the morning." Wei Chihong said. Zeng Jinling was only seconded to the Public Security Bureau to assist in handling the case, and she still had to take care of her own work.

Li Haoxun turned to ask Qiao Yan: "How is the portrait work going?" ”

Qiao Yan told him in detail about the conclusions she had reached so far.

Li Haoxun nodded. "Don't put too much pressure, I don't want a second person to fall, take care."

"Thank you, Bureau Li." Qiao Yan is sincere and polite. Wan Xing also bowed slightly to him.

Li Haoxun also said that if there is any need in life, he will raise it and the organization will try his best to solve it.

"I don't need anything, it depends on whether Qiao Yan has it, but she shouldn't have it either, someone has taken care of her very well." Wanxing said it very easily.

Li Haoxun immediately smiled and turned his head to look at Qiao Yan. "I have already told Wei Chi that it is okay to take care of it, but don't overdo it, especially in public, you have to pay attention to the influence. When you go home and close the door, you won't interfere with how you take care of me. ”

Qiao Yan buried her head low, ashamed and panicked.

Wei Chihong behaved with a serious face. "I promise not to take care of it in public in the future, and I will talk about it behind closed doors when I get home."

"You kid." Li Haoxun pointed his finger at him, laughing and shaking his head.

At the time of Shi Nara's murder, there was no sighting information of suspicious people for the time being. After investigation, it was learned that Shi Naliang was indeed a person who did his own thing, as Hong Han said, which caused a lot of disputes. His participation in endorsement activities and the like depends on his mood, and sometimes he leaves without saying a word to the organizers at the event, leaving a mess for Hong Han to clean up. But Shi Naliang's talent is indeed incomparable, so Hong Han has been doing his best to maintain his image, and celebrities like Shi Nara are very testing the emotional intelligence and IQ of the agent.

The task force began to investigate all the people who had dealt with Shi Nara, looking for people who hated him.

In the afternoon, Wei Chihong received a call from Lu Xipeng, saying that all the deleted audio data in the recorder had been restored. He immediately called Qiao Yan and drove to Haidu University.

"Why did you find Professor Lu to analyze the voice recorder?" Qiao Yan didn't understand.

"You'll know when the time comes." Wei Chihong sold a pass, "I heard Lu Bin say in the morning, after Hong Han consulted the leaders of the brokerage company, he decided to take the music in the voice recorder as Shi Naliang's last work before his death, play it at the memorial service, and at the same time include it in the commemorative album that will be published and released in the future, so he asked to return the voice recorder as soon as possible." Time was too limited, the technicians in the bureau had a heavy task at hand, and the acoustics were not as professional as Professor Lu, so I thought of asking him for help. At noon, Professor Yoro met with him, and he promised to give me a result in the shortest possible time. ”

The two went to the acoustic laboratory of the physics department, where Lu Xipeng was waiting for them, and to their surprise, Lu Xipeng's wife Xin Qiyun was also there.

Lu Xipeng smiled and explained to Wei Chihong: "When you called me at noon, my wife happened to be by my side, and she felt very curious when she heard about it, and wanted to know how I, a person who doesn't know much about music, should analyze and study the works of musicians, so I have to follow and take a look." It just so happened that my wife could play the piano and could help, so I brought her with me, and I hope you won't mind. ”

"Of course I wouldn't mind." Yu Chihong responded with a smile.

"Look at the audio waveform." Lu Xipeng quickly got into work, pointing to the audio waveform displayed on the laptop screen, "First of all, this is the recorded tune. Then, here's the deleted sound, the melodicly similar tune you want to restore. It's similar, but it's a different tune. ”

This was already heard by Yu Chihong and Qiao Yan before.

"The key is to come, listen carefully." Lu Xipeng said again.

Yu Chihong and Qiao Yan both listened attentively. At the end of the piece, after a brief silence, there was a sudden sound of footsteps, accompanied by the sound of bells.

"Listen to the footsteps, it seems to be the sound of high heels." Qiao Yan has been wearing high heels for a long time and is naturally experienced.

Wei Chihong nodded and said: "Cao Chongshan's appraisal report also states that there are shoe prints of high-heeled shoes at the scene, and the shoe is 20 centimeters long, that is, between 33 and 34 yards. Among the items collected at the scene was also the woman's long hair. ”

"Was it a woman who killed Shi Nara?" Qiao Yan was surprised, the first thing she thought of was Luo Yi. Was he abandoned by Shi Nara, and suspected of being raped by him in disguise, so he had a strong hatred for him? However, the contradictions at the scene of the murder made her quickly reject her speculation, the prisoner did not leave fingerprints on the murder weapon, but left blood stains on the ground, and traces of items that had been released, no matter how you think about it, it doesn't look like the same person did it.

"Can you know where the footsteps started?" She asked.

Wei Chihong said yes, the data showed that it started at 10:11 p.m., stopped for about 15 minutes in between, and then the footsteps and the sound of the bell reappeared, stopping at 10:36. At 10:41 a.m., I began to record the song saved by the recorder. All of this happened to be within 10 to 11 o'clock of Shi Nara's presumed time of death.

"The sound of bells...... "Wei Chihong also thought of something, "That day in the ward, when Luo Yi answered the phone, I glanced at her mobile phone, and I remembered that there was a string of bells on the mobile phone chain. He thought for a moment and then said, "Let's listen to that recording first, maybe you can hear something." ”

After listening to the footsteps and the recording of the bell several times, Lu Xipeng and Wei Chihong heard at the same time that the footsteps were a little abnormally chaotic, like an old man with inconvenient legs walking.

"Let's do an experiment." Lu Xipeng proposed, "My wife's shoes are exactly the same as the high heels that left the mark on the scene, they are size 33, and her shoes can be used as experimental supplies."

Xin Qiyun couldn't help much for the time being, and kept listening quietly beside her, not daring to disturb. Now that I heard that my high heels could come in handy, I quickly took off the shoes on my feet.

"Don't worry, I'm not experimenting here." Seeing that his wife was in such a hurry, Lu Xipeng took the initiative to cooperate, and touched her head with a smile, "I want to go to the scene of the crime." If you want to go barefoot all the way, we don't mind. ”

Xin Qiyun snorted and put on her high heels again.

Qiao Yan unconsciously looked at Xin Qiyun's feet, although she was wearing stockings, she could still see that those feet were small, delicate and slender, and they were really slender and jade.

Lu Xipeng prepared all kinds of necessary equipment, and the four of them went to the villa where Shi Nara was killed, and Lu Wei Chihong and Qiao Yan also went to the jewelry store to buy a string of bell pendant mobile phone chains similar to Luo Yi.

Once the laptop, source speakers, headphones, and other equipment are placed, the experiment begins.

"This is the sound waveform of the heels and the bell left over from the recording. The heels and bells are ready, so let's find out who exactly matches this waveform. Lu Xipeng was in charge of operating the equipment, and asked his wife to come first, "You are wearing high heels, carrying this string of bells in your hand, and walking along the footprints on the ground." ”

Where there are high-heeled shoe prints on the ground, Cao Chongshan has already marked them. The mark extends all the way to Shinara's study on the first floor.

Xin Qiyun walked along the markers, and Wei Chihong held the microphone and followed the radio.

The result of Lu Xipeng's comparison is that the waveform is different.

"Qiao Yan, you can try it too." Wei Chihong said.

Qiao Yan then took off her flat shoes and put on Xin Qiyun's high heels, her shoe size was 35, she put them on relatively reluctantly, with a bell, and walked along the mark with a somewhat unsteady pace.

"It's still different." Lu Xipeng shook his head.

Qiao Yan changed back into flat shoes.

"I'll try it myself." Yu Chihong took the bell mobile phone chain from Qiao Yan's hand and tied it to the zipper of his jacket pocket. Then he took off the leather shoes on his feet and stuffed his feet into Xin Qiyun's high heels. His feet were big, like an adult who insisted on wearing a child's shoes. Qiao Yan, Lu Xipeng, and Xin Qiyun all looked at him in surprise and amusement, as if they were watching a good show.

Yu Chihong could only barely stuff his feet into it a little, and then began to challenge walking in high heels, while Qiao Yan was responsible for using the microphone to pick up the sound.

Wei Chihong didn't wear high heels at all, and the shoes were too small, so he stumbled and almost fell several times. When his body shook, the bell on his body rang loudly, and it took him a lot of effort to stand firm and continue to move forward with difficulty. Lu Xipeng and Xin Qiyun were both amused by Yu Chihong's embarrassed appearance. Qiao Yan couldn't stop laughing on the side.

But after laughing, Lu Xipeng found an amazing result - the waveform matched!

The final result of the experiment was that the sound of high heels recorded by the voice recorder came from a person who weighed about 75 kilograms and was not used to wearing high heels, which should be a man.

What was the purpose of the man, who was wearing a woman's high heels, all the way from the living room to the study? There are also items that caused the bloodstains to break, and since the villa is still cordoned, the scene has been restored to the same state. Yu Chihong squatted down and looked at the shape of the item in the middle of the bloodstain again. Then he took out his phone from his pocket and compared it to it.

"There was a cell phone there?" Qiao Yan immediately saw that the size of the mobile phone was almost the same as the shape of the item, and the model of the mobile phone was different, so the shape and size must be different.

"It should be." Wei Chihong's thinking has gradually become clear.