Cao Chongshan fell into silence, stunned for a long time, and then Fang opened his mouth again, a pun. "Let's get to work first, and I'll talk about the rest when I figure it out. A lot of time has been lost, and we can't go on like this. He sniffed, wiped the tears from his eyes with his hand, and staggered to his feet.

Yu Chihong stretched out his hand to help him, and he gently pushed Yu Chihong's hand away. "Don't worry, Lord Wei Chi, no matter how bad my mood is, it won't affect my work, what to do, I still have to do it, this bit of professional ethics is still there."

Wei Chihong nodded approvingly at him, watched him stagger to the workbench, and let out a long breath.

"It is very likely that the books published by Feng Yanze were written by others, which has long been rumored among the editors of the publishing house." At the case seminar, a criminal police officer reported the results of the investigation.

"Who are the others?" Duan Zhiming asked.

The criminal police reported: "Zhao Xin, a doctoral student brought by Feng Yanze, was also his graduate student before, and Zhao Xin and Feng Yanze's assistant Wei Yishan were graduate students, and both of them were Feng Yanze's protégés and had a good relationship. According to Zhao Xin, those books are likely to be ghostwritten by Wei Yishan, Wei Yishan is also Zhao Xin's graduate student, specializing in music psychology, after graduating from graduate school, she applied to return to her alma mater, originally said that she was a teaching assistant in the music department, but because Feng Yan was in the way, she was assigned to the art and design department, and can only be a student counselor, unable to engage in teaching.

Wei Yishan cried to Zhao Xin for this reason, Feng Yan has been using her, she is unwilling to continue to be used, and Feng Yan deliberately manipulates her. The use that Wei Yishan is talking about is probably ghostwriting. ”

"Wei Yishan only joined the work in September last year, and if she has been forced to ghostwrite for Feng Yanze during her graduate studies, it is very consistent with the time when those books were published." Lu Bin took over the conversation, "The fruits of my hard work were stolen by others, no matter how hard I tried, I couldn't get recognition, not only that, but even my desire to be a teacher couldn't be realized because of Feng Yanze's destruction." When resentment accumulates over a certain period of time, it will explode......"

"But what about the evidence?" Fu Yiming interrupted him in annoyance, "This is just our speculation, there is no evidence, we can't treat Wei Yishan as a murderer, and we can't interrogate her casually." Wei Chihong went to attend other important meetings, and this case seminar was presided over by Fu Yiming.

"There is still a doubt about Wei Yishan." Duan Zhiming added, "After the incident, when she was questioned in the office, she did not wear white overalls from the laboratory. But when I saw her later, she was wearing white overalls. That day she said she had been in the computer music lab, preparing for the lab class. Now that I think about it, it doesn't make sense to be in the lab and not wear overalls. If she came after taking off her work clothes, she couldn't say anything, she was already very anxious when she heard that something happened, how could she take care of her own clothes, Zhao Xin was also asked in white work clothes. ”

"It must have been blood spilled in overalls!" Lu Bin became excited again, "As long as you find that overalls, there will be evidence." ”

Duan Zhiming is not as optimistic as him. "The murder weapon hasn't been found yet, that woman is too cunning to deal with."

At this time, Wan Xing hurriedly walked into the conference room, Zeng Jinling and Qiao Yan went to the Da Vinci Art Academy, and the special investigation team did not participate in this case seminar. She didn't greet everyone either, and directly explained the reason: "I watched all the surveillance videos of the convenience store on the day of the crime and found some information. ”

In the video footage, Wei Yishan appeared in the convenience store. This convenience store has a free service of collecting and sending couriers, and it can be clearly seen that Wei Yishan is here to send express mail, and she handed a pre-packaged package to the younger brother at the service desk. The time shown in the upper right corner of the screen is when the school rioted because of the murder.

"Wei Yishan lied, she wasn't in the lab all the time." Fu Yiming saw hope, "Hurry up and check where she sent something." ”

The results of the investigation came out quickly, and Wei Yishan was sending the package to her uncle Zhang Tianbao's home at that time, and the recipient wrote herself. Wei Yishan's parents are out of town, and she does not have a home of her own in the city, so she usually lives in the school dormitory, often visiting her uncle's house on weekends, and occasionally staying there.

"At that time, what did she want to send back?" Lu Bin suddenly patted his head, "I understand, it must be something very important that she put in school and couldn't bring it back to her uncle's house in person." It's the murder weapon and the bloody clothes! ”

The parcels delivered by the courier company were all stored at a convenience store in the community, and then a pickup code SMS was sent to the recipient's mobile phone to pick up the parcel with the pickup code. Wei Yishan only needs to go to the convenience store to pick up the parcel by herself, and she can indeed do it without knowing it.

Once the package is sent at that time, it will not be delivered the next day. After Feng Yan was killed, Wei Yishan was busy dealing with various things, and if the package was indeed filled with evidence of murder, she had to consider the time and place of destruction, and she might not be able to pick up the parcel in time. The detective quickly found the convenience store, fortunately, the package had not been picked up, and when he opened the package, it contained a white overalls stained with blood, and a knife.

Wei Chihong went to the Da Vinci Academy of Art in person, although he didn't want to face Wei Yishan, he still wanted to give the other party a chance to make her confess and be lenient. After all, Wei Yishan's uncle Zhang Tianbao is his mentor.

Wei Yishan had just received a notice from the department and decided to let her be a teaching assistant and take over Feng Yanze's research. She walked out of the department leader's office, couldn't help but burst into tears, still excited, but saw Wei Chihong coming over. "What's the matter?" Her mood was like riding a roller coaster, falling from a height in an instant.

"Let's go to the office." Yu Chihong made a "please" gesture.

Wei Yishan walked past Yu Chihong with a cold face.

"Have you cried? Wei Chihong looked at Wei Yishan's red eyes, "Is there something sad?" ”

"You wish I was sad." Wei Yishan's tone was full of provocation, "But I'm disappointed, I cried because I was happy and excited, and I could be a teaching assistant soon." ”

"It stands to reason that you should have been a teaching assistant when you first entered the school. It was Feng Yan who got in the way of it, which caused your hopes to be disappointed. Wei Chihong with a little sympathy, "You also have suffering, the books you worked hard to write are all signed by Feng Yanze's name, and you yourself can't get any affirmation, not only that, but you were also suppressed by Feng Yanze, and your work was not smooth." That resentment is getting bigger and bigger, and one day it will explode. ”

"You're trying to think of me as a murderer. It's true that most of the books published by my professor were written by me. But he asked for my consent, and when I wrote those books, I was only a graduate student, and it was normal for graduate students to work for their supervisors for free, and the publisher had too many manuscripts, and the professor didn't have time to write them, so I ghostwrote them according to his views. Wei Yishan refused to let go.

"Ever heard the story of the last straw?" Wei Chihong suddenly asked.

Wei Yishan looked at him coldly. "What do you mean?"

Wei Chihong still spoke in a sympathetic tone: "A merchant has an old camel, he uses the camel to transport straw, and the camel works hard all day and night. Once, the merchant wanted to see how much straw the old camel could pull, so he kept adding straw to its back. But the old camel didn't look tired, and finally the owner wanted to see if the camel's weight had reached its limit, so he gently threw a straw on the camel's back, and the camel finally collapsed. A straw is light, but when the camel's weight has reached the limit of what it can bear, a straw can crush it. You're like that camel, and I'm curious to know what the last straw that broke you was it. ”

"Enough!" Wei Yishan shouted angrily, "I have no basis to say that I am a murderer, I can accuse you!" ”

"We certainly have proof. I wanted to give you a chance, but, unfortunately. Yu Chihong raised his voice outside the door, "Come in." ”

An interpol walked in, holding a folded white overalls with dark red blood stains on them.

Wei Yishan's face changed suddenly, she couldn't help but understand what the blood-stained white overalls meant.

"This is something you sent to your uncle's house by courier, right?" There was a bit of indescribable emotion in Wei Chihong's eyes, "The bloodstains on this are consistent with Feng Yanze's." Next, just test your DNA on this overalls and you'll be telling. And that knife must have your fingerprints on it. Until the results of the appraisal are in, you should turn yourself in. Can you tell me, what was the last straw for you? ”

Wei Yishan's pale lips twitched, and finally burst out a wisp of trembling. "I've been putting up with it, and I'm about to collapse."

Wei Yishan revealed a shocking fact: Feng Yan often sexually harassed female graduate students and had improper sexual relations with many female students. He is good at disguise, shows a decent and gentlemanly demeanor in public, coupled with his extraordinary appearance and wisdom, so he greatly reduces the vigilance of female students against him. He first selected docile and obedient female students whose hometowns were in other places, and created more contact opportunities under the pretext of miscellaneous matters such as accounting and conference affairs. With tricks such as "praising and killing" and "attaching equal importance to grace and power", he praised and praised the obedient girls in front of everyone. Or promise to let the girl's article be published in a certain publication, use the method of repeatedly revising the article to increase the opportunity of contact, pretend to care about the girl's family situation, living conditions, emotional status, etc., and use "we are teachers and students, but also friends" to close the distance, and then sweetly talk and induce the girl, and the girl who is deeply involved does not know it.