The campus network in this world has not been renamed. It is between the openness of Weibo and the closedness of QQ. Each university has its own section, which is only open to students of the school, and all of them are real-name systems.

Jin Meixian's campus network does not have much, but she has a lot of friends, a series of lists.

Cheng Jiayou's account has a lot of student union notices. He is very conscientious. Every time there is an announcement, he will forward it on his own account.

Liu Kai is more active, with many original articles, but he mentions Cheng Jiayou more or less, and his intention to take advantage of him is very obvious. Some girls below replied to him, and he flirted with them there.

Zhao Xuan's account is the most daily, with check-ins at restaurants near the school, help with beauty problems, and questions about how to sterilize stray cats. It is ordinary and daily.

What surprised Jian Jing the most was that President Fang did not have an account.

"Doesn't the president use the campus account?" Jian Jing asked.

President Fang sat behind his computer desk. Hearing this, he looked up and said, "Oh, no, I have a student union account."

The student union account is an administrator account, which has the power to delete posts and ban comments in the public forum.

Jian Jing curled her lips and looked down to search for "Jin Meixian". Not surprisingly, there were no posts. Searching for "student union", there were only official notices such as recruitment notices, and no negative news at all.

She had no choice but to go to Cheng Jiayou's account again and look through every message of his.

After searching for more than ten pages, she found a girl named "Yao Yue" and scolded him: The student union is a bunch of bastards, trash who abuse their power for personal gain, and they will not die well!

Jian Jing was quite curious, so she clicked on her account and found that this girl had several accounts that she frequently visited. Most of them belonged to the student union, but she didn't find any traces of her visits in other people's accounts, so she was obviously blocked.

However, the account that was visited most frequently, with dozens of traces every month, belonged to a rich second-generation.

He was from the school next door, and his profile picture looked like a decent guy, a little handsome, and he also blocked "Yao Yue".

Jian Jing had seen this rich second-generation profile picture in Jin Meixian's friend account.

She opened the account and asked Cheng Jiayou: "Do you know this person?"

He glanced at her and said: "Friend, what's wrong?"

"Nothing."

Jian Jing walked away and asked Zuo Xin: [Do our students have any scandals?]

Zuo Xin: [Too many, which one are you asking about?]

Jian Jing sent Yao Yue's account: [Do you know this girl?]

Zuo Xin: [I don't know her, what do you want to do?] Jian

Jing: [Can you help me find out? It's urgent]

Zuo Xin immediately became alert: [No problem, leave it to me, but you have to tell me about the case]

She is not stupid. Jin Meixian had an accident yesterday, and Jian Jing suddenly started asking about this. Even a fool would know that there is a connection. She did not really want to participate in solving the case, but she was satisfied to hear about it afterwards.

Jian Jing: [OK]

Zuo Xin: [Look at me, I'm the best at this]

The police rely on professional knowledge such as technology and IP addresses to check online information, while girls rely on avatars, nicknames, and word usage habits to check messages, which is equivalent to psychological profiling.

Jian Jing put away her phone, thought for a while, and asked Zhao Xuan: "Can you take me to the bathroom?"

Zhao Xuan didn't want to interrupt her work, but after thinking carefully, she was afraid that she would say something, so she nodded: "Okay, I'll take you there."

The two of them entered the women's bathroom together.

Jian Jing pushed open the door of the cubicle and didn't find anyone, so she said: "Do you know Yao Yue?"

Zhao Xuan was stunned: "Who is that?"

"She often scolds the student union on the Internet." Jian Jing reminded.

Zhao Xuan suddenly realized and said nonchalantly, "There are many such things. Students will manage other students, just like class leaders. How can they not be scolded?" Jian Jing

was not familiar with her and did not dare to reveal too much. She nodded calmly, "So that's how it is. By the way, who is President Fang's girlfriend? Didn't Liu Kai say that she is pursuing Jin Meixian?"

Zhao Xuan had now torn her face with them and didn't care to say a few more words, "Who knows? I haven't seen her, but she should be a rich second-generation like Jin Meixian, right? No, he should be looking for a second-generation official."

Jian Jing thought, "President Fang's family background seems average."

"Very average." The student union is full of shrewd people, and their family situations cannot be hidden. Zhao Xuan said, "Sometimes I admire him too. Cheng Jiayou's family donated a batch of experimental equipment to become the vice president. Of course, he has the ability, and his resume will look better when he enters the student union. But Mr. Fang climbed up by himself." President Fang

was criticized for his official power, but his inspirational words are really inspiring.

He entered the school, not the top student, and his family did not donate money, but he squeezed into the student union in his freshman year, starting from the bottom running errands, trying to please many school leaders, and last year he stood out and overwhelmed Cheng Jiayou to become the president.

"He doesn't care about money, he's only aiming for the civil service exam." Zhao Xuan knew a lot of inside information, "Before, a leader came to inspect our school, he was busy running around, and several leaders praised him for being 'sensible'."

Jian Jing was amazed, and felt that he and they were not in the same university.

The two girls chatted in the bathroom for a while, and didn't go out until there was a noise outside.

Ji Feng finished questioning Zhang's best friend and asked Jian Jing to come in.

Jian Jing asked, "What happened?"

"She confessed. She was the one who put the sedative." Ji Feng briefly explained the whole story and said, "I asked someone to go to the clinic to verify. If there is no accident, she was not the one who poisoned." Jian

Jing propped her chin up and said, "No wonder she didn't say bad things about Jin Meixian yesterday. It turned out that she felt guilty for accidentally killing someone."

"What about Wang Ruoke?" She was puzzled. "She is very strange."

Ji Feng agreed, "Indeed, Wang Ruoke's hatred for Jin Meixian is unreasonable. She deliberately brought up Yu Qiu and is suspected of misleading us. But her motive for murder is not clear. If she really wants to kill for the quota, she has to wait for the test results to come out. Besides, I think she is very confident and doesn't think she will fail."

"So?"

"Teacher Jian, you have talent, but you lack experience." He smiled, "Just because she has no motive to kill doesn't mean she has no motive to mislead. In my opinion, she wants to protect someone."

Jian Jing was stunned, then suddenly realized, "That makes sense. She wants to protect the murderer, or maybe her hatred is not just for herself, but more for that person."

Following this line of thought, she quickly figured out the key: "This should be a boy."

After a pause, she almost immediately pointed to someone: "President Fang."

"Reason?"

"Liu Kai is not worthy, Cheng Jiayou doesn't like him." Jian Jing was not talking nonsense, she had seen Wang Ruoke sneer and roll her eyes at Liu and Cheng several times, "As for President Fang, there is no direct evidence, but there is indirect evidence."

Ji Feng wondered: "Why didn't I see it?"

Jian Jing smiled slightly and raised her finger: "First, I looked through Wang Ruoke's campus photos, she didn't post photos of her boyfriend, but there were several times when she went out to eat, there was a man in the reflection of the glass, which shows that she does have a boyfriend.

"Second, she posted photos of herself trying on clothes, and there was a pair of men's sneakers in the dressing mirror, the same style as the sneakers under Fang's desk.

"Third, Wang Ruoke's notebook is the same model as President Fang's, but the color is different."

She had not wandered around the office just now in vain, and had already compared it with the scene she saw in the girls' dormitory yesterday. If she didn't mention it, she would not have noticed it. After eliminating two wrong options, the details should not be too obvious.

Ji Feng: "..."

He thought about it, but said: "But I have a question that I can't figure out."

"What question?"

"When was the poison put in?" He thought, "According to my observation, you girls always keep your bags with you. At most, you ask someone to take it when you go to the toilet. Oh, it doesn't count for your boyfriend. The powder box must be taken out of the bag, so that you can put the poison in it? Do boys have this opportunity?"

Jian Jing frowned.

What he said makes sense.

Ji Feng added: "I still think that putting poison in a powder box is something women do."

Although he cannot represent all men, his experience and intuition tell him that boys generally don't think of such a method, only girls would do this.

"Didn't you take photos yesterday? The deceased had a lot of cosmetics." He analyzed, "Is it possible that the time was wrong? The poison was administered a long time ago, but the deceased just happened to use this on that day."

Jian Jing speculated, "It's possible. Jin Meixian doesn't live in the dormitory often, and she has a lot of powder cakes. It's hard to track the specific time if she randomly uses one."

Ji Feng asked, "Do you girls use this regularly?"

"If I have to say, it's been cold and dry recently, so I'll use something moisturizing." Jian Jing recalled Jin Meixian's desk, "But it's not necessarily the case. It depends on the specific skin condition."

Ji Feng had a headache: "This is difficult." It's been too long, where can I find evidence? Without evidence, all reasoning is bullshit.

At this time, Zuo Xin sent a message saying that she asked Yao Yue's information through her roommate's boyfriend's good friend.

The story is bloody.

Yao Yue is a student of the Foreign Language Department. By chance, she met a boyfriend who is the son of an official and got pregnant. The boyfriend was just playing around and was afraid that she would get close to him, so he broke up with her.

The girl refused and kept pestering him, and many people knew about it. The son of an official was annoyed and hid away. Not long after, the girl was suddenly forced to drop out of school by the school, saying that she had some mental problems.

Some people believed it, some did not, but Yao Yue's words and actions were indeed fierce, so no one asked too many questions.

This year, the son of an official graduated and Yao Yue re-enrolled in school. However, she could no longer find the man who abandoned her, so she had to vent her anger on the student union, saying that they were running dogs and so on.

Seeing her absorbed in the story, Ji Feng glanced at her: "New clues?"

"No, I haven't figured it out yet." Jian Jing said, "Who do you suspect?"

Ji Feng said, "It's no good to have a preconceived opinion."

Jian Jing changed the subject: "Whose motive is more sufficient?"

"Wang," he replied, "No matter why she hates, she does have hostility towards the deceased, and at the same time, she has more conditions to commit the crime."

Jian Jing: "I think it's President Fang."

"Where's the evidence?"

She stood up: "I'll go find it now."

What Ji Feng said made sense, but Jian Jing felt that her reasoning was more logical, but it was just missing a link to connect the dots.

First, find Cheng Jiayou to confirm the motive.

Jian Jing called the person out alone and got straight to the point: "In my opinion, Jin Meixian is a very vain person. She likes to show off, right?"

Cheng Jiayou hesitated and nodded.

"Did she ever say that she hopes you will be the president?" she asked tentatively.

Cheng Jiayou was surprised: "How do you know?"

Jian Jing couldn't help but smile: "She did?"

He sighed: "Zhao Xuan heard me quarreling with her that time, it was because of this. She thought that the vice president had the word "vice" in it, and hoped that I could be the president. But we are seniors, and the next term will be the next term." For Cheng Jiayou,

the student union is just a place to exercise his abilities, and he doesn't care whether he is the president or the vice president. Especially since the president needs to accompany teachers and leaders for drinks and social events, he can't help but flatter them, and he can't lower his head.

"I don't know why Meixian suddenly cared about this and had a quarrel with me." Cheng Jiayou said, his tone lowered, "I shouldn't have quarreled with her if I had known."

Although it was only two months, he was a little sad after the love affair.

Jian Jing didn't notice his depression, thinking that Jin Meixian's whim was probably related to Wang Ruoke.

She was secretly in love with President Fang, and her words and deeds would have some influence on it. She also had a grudge against Jin Meixian, and it was likely that she had said something provocative during the quarrel, causing Jin Meixian's worries.

And this was probably President Fang's motive for murder.