How did Jian Jing deduce that Jin Meixian's cause of death was related to the position of president?

It's hard to believe, but it was Wang's roommate who reminded her.

She thought that Wang's roommate didn't seem to know the real cause of Jin Meixian's death. Maybe they were not accomplices, but guessed it when everyone was testifying.

An ordinary girl's hasty "motive for murder" must have something to do with what she knew.

Yu Qiu's death was due to Jin Meixian's exposure of the sponsorship incident.

Could the real motive for murder also be due to a secret she knew?

Thinking of this, she naturally thought of Yao Yue.

Yao Yue was diagnosed with mental illness and took a two-year leave of absence. Coincidentally, the director of the psychology department of the student union at that time was President Fang.

Let's review President Fang's resume as mentioned by Zhao Xuan. He is an ordinary student, but he has been promoted very quickly. When he graduated from his post as president last year and the new election was held, he beat Cheng Jiayou and became the president.

You know, Cheng Jiayou's conditions in college are really good.

He has a good appearance, a good family background, good grades, and good relationships. The most important thing is that his family donated things to the school. The ivory tower is not pure. Why did the teachers of the school choose President Fang instead of Cheng Jiayou?

Just because he can flatter?

To put it bluntly, if he is not the president, he will not flatter? He should flatter even more fiercely.

Therefore, for President Fang to become the president, it must be someone's effort.

Who?

Yao Yue's boyfriend who is the second generation of an official.

President Fang solved a big problem for him, and the other party returned the favor and helped him get the position.

This makes sense.

However, the second generation of officials and Jin Meixian are friends. Maybe they were showing off or they were drunk. Anyway, they don’t take these things seriously and may have just said it casually.

Originally, Jin Meixian would have just listened to it, but who would have thought that one day she would be provoked by Wang Ruoke and would be so resentful that she would not be satisfied until her boyfriend became the president.

Given her character, she may have threatened President Fang a long time ago. Before, Liu Kai said that President Fang talked to Jin Meixian, maybe it was because of this matter, and President Fang just went along with it.

And who is President Fang? He doesn’t have a good family background and climbed to this position by himself. Jin Meixian has a handle on him and wants to threaten him to get out, but of course he won’t agree.

I’m afraid that the murderous intention was set at this time.

Jian Jing sorted out the causes and consequences clearly and basically connected them together.

There is only one thing, who did the murder? She thinks it was President Fang, but considering the means of murder, it is more like Wang's roommate did it for her boyfriend's future.

This is the part that she just can't figure out.

How about drawing a card and giving it a try? As

soon as the thought came to her mind, Jian Jing suppressed it.

Although the system is good, you can't just use it when you encounter troubles. If you can solve it by yourself, try to find a solution by yourself, otherwise you will never make progress.

Think about it again, what is wrong?

Jian Jing pondered over and over again, and unknowingly drank too much water, and wanted to go to the toilet.

She had already entered the toilet, and when washing her hands, she couldn't help but look up at the glass mirror.

Alas, I didn't sleep well last night because I was thinking about the case. I have two big dark circles under my eyes. I used concealer to cover them up when I woke up in the morning, but after a few hours, some powder still floated.

After drinking water, my lipstick has faded a little, and there is a trace of blush on the edge of my lips.

Jian Jing opened the bag, took out a tissue to wipe off the remaining lip makeup, took out the moisturizing spray, sprayed a circle of fine water beads on her face, and after it was slightly dried, she used powder to touch up the faded parts.

Finally, she reapplied lipstick.

Sip it.

It's done.

She packed her backpack and threw away the garbage, and when her fingers picked up the tissue stained with lipstick, an indescribable shudder crawled over her. Just like Conan's fleeting blue lightning, the aura broke through the chaotic cerebral cortex, as if ice water was poured on the head in summer, shuddering and sobering up.

So... so that's it!

It's so simple, but everyone was misled.

Jian Jing was suddenly very excited and rushed into the office impatiently.

She already knew the modus operandi, and now all she had to do was find the decisive evidence.

Where is the potassium cyanide? Has it been destroyed after a day?

Jian Jing used her extraordinary observation skills to look through the office carefully, but "detective observation" is not against the will of heaven. The office was so messy, and the huge amount of information actually hid the key things.

"What are you doing?" Liu Kai couldn't help but speak when he saw her wandering around.

Jian Jing ignored him.

She was thinking that President Fang would not prepare means of murder in the dormitory, as it would be easy for his roommates to find out, and he didn't have a good relationship with them. The student union's office is a reflection of his status and position, and it is where he feels most in control. There

are not always people in the office every day, and as the president, it is not difficult to find a chance to be alone.

It should be near the desk.

President Fang saw that her eyes never left his position, his heart skipped a beat, and he moved aside to stop her: "I have a lot of school documents here, you can't look at them randomly."

As he spoke, he pretended to tidy up the things on the desk.

"Why are you so anxious?" Jian Jing smiled, "I found the right one?"

President Fang shook his head: "I don't know what you are talking about."

"When the criminal tries to make excuses, he usually says this. I'm tired of hearing it." Jian Jing said calmly, "Get out of the way."

President Fang was not willing to give in, and waved his arm to push her: "I said, the student union's stuff can't be spread outside. If you mess around again, I won't be polite."

However, Jian Jing did not give in at all when facing such a tall and strong boy.

She is not only strong psychologically, but also physically confident. Pure physical strength brings great confidence to people.

Jian Jing held his waving arm, and the huge male pushing force came from the tiger's mouth, but the muscles pulled and blocked this force.

She pushed President Fang away with her backhand: "Try it again?"

President Fang was surprised by her strength and was stunned for a moment. He wanted to fight back, but he couldn't really fight with a girl in public, otherwise even a fool would know that something was wrong.

With just this hesitation, Jian Jing had already started to search.

What was there to be afraid of after the commotion? Just search quickly.

Wang Ruoke bit her lip and came over to pull her: "What are you doing? It's not good to rummage through other people's things." After thinking for a while, she said, "The police didn't move."

"Then call the police to arrest me." Jian Jing shook off her hand, not only swept all the data aside, but also did not let go of the keyboard, opened it all at once.

Others didn't know what was wrong with her, and they didn't dare to persuade her, and surrounded her.

"What are you doing?" Ji Feng led Zhao Xuan in after the interrogation. Seeing the scene in the office, he smiled. "What did you find?"

Wang Ruoke said, "I don't know why Jian Jing rummaged around everywhere."

Liu Kai said maliciously, "Maybe she destroyed the evidence."

Ji Feng knew Jian Jing very well and immediately guessed that she might have found something. He walked over and asked, "What are you looking for?"

"Evidence." Jian Jing squatted down, her eyes parallel to the table.

After a moment, she tore off a roll of transparent tape, stuck it on the table, handed it to him and said, "Smell it?"

Ji Feng moved closer, sniffed for a moment, and his eyebrows flew up.

The smell of bitter almonds.

The signature feature of potassium cyanide.

He waved for someone to bring the evidence bag, and smiled at President Fang: "This is potassium cyanide. Tell me, why is it on your desk?"

"Potassium cyanide? I don't know." President Fang was shocked, "This is not mine."

Ji Feng said, "It's on your desk, don't you know?"

He shook his head: "Potassium cyanide is a toxic substance, how could I put such a thing on my desk, I don't want to die."

"It's too obvious to put it on the table, who would be so stupid, someone must be framing it." Wang Ruoke looked around, "The people in the same office are the most suspicious."

Jian Jing smiled: "You two are singing the same tune, and you have a tacit understanding. But if I guess correctly, this thing belongs to the president."

President Fang asked back: "Why would I put this on my desk? Am I not afraid of death?"

"Of course you are afraid, so you didn't leave this on purpose. The real evidence should have been destroyed by you, and this was left behind unintentionally." Jian Jing paused, then changed the subject, "Well, let me start from the beginning."

"First of all, Jin Meixian died of potassium cyanide poisoning, but potassium cyanide poisoning takes effect very quickly. If it is put directly in the food, it is easy to be caught on the spot, and it is not convenient to destroy the drug. The best way is to put the poisonous item next to her, so that no matter when she is poisoned later, you will have enough alibi and plenty of time to destroy the body and the evidence.

"You and Jin Meixian are not familiar with each other, and she even hates you a little. Therefore, you have no chance to approach her and poison her belongings. Originally, if this matter was handed over to your girlfriend Wang Ruoke, she could do it, but people like you would not leave a handle to anyone, even your lover.

"In this case, there is only one way for you to poison her, which is to swap one of her belongings. As long as you find the right opportunity and the method is fast enough, it will be done without anyone noticing."

Hearing this, Ji Feng touched his chin and felt something was wrong.

How did President Fang know in advance what powder Jin Meixian would take? Wang Ruoke informed her? That is different. There must be a difference between the used and the new.

But he did not interrupt.

As if she knew his doubts, Jian Jing glanced at him and explained, "Girls only carry a few things with them: mobile phones, lipsticks, powder, and tissues. The cosmetics they carry may be different every day, but tissues are always indispensable. Soak the tissues in potassium cyanide solution, dry them thoroughly and restore them to their original state, and you will get a pack of invisible murder weapons."

When she read the autopsy report before, she deliberately took a look at the personal belongings that were salvaged.

In the small Chanel bag, there was a mobile phone, a charging cable, two lipsticks, powder, and a pack of wet tissues. The police detected trace amounts of poison in all the items, but it was not necessarily the powder.

"The tissue was probably used to wipe his mouth, so the poison would take effect too quickly. Let me guess, you must have waited until Jin Meixian finished her meal and went to the toilet before you found an opportunity to switch the bags, right?" Jian Jing said, looking at Zhao Xuan.

She concentrated on her memory for a while, and said uncertainly: "When he went to the toilet, it seemed that his clothes got caught on the chain of his backpack, and everything fell out."

Zhang's best friend also remembered: "That's what happened."

"I just accidentally knocked it off." President Fang said expressionlessly, "What does this mean?"

"You chose to switch tissues because you noticed that Jin Meixian always uses the same brand of tissues, right?" Jian Jing said calmly, "She doesn't like the ordinary tissues on the street, and uses a foreign luxury brand. It's especially soft and contains hyaluronic acid. It has a strong fragrance and can cover up odors. The texture is similar to cotton towels and is very easy to take care of. The only problem is that it's not sold in China at the moment, so you can only buy it from an agent."

She said, "It's not easy for you to buy this tissue, right? You can't find it in the supermarket, and no one around you uses this kind of tissue, so you can only find an agent to buy it yourself. Can I take a look at your shopping records?"

President Fang's face turned pale, but he still refused to change his words: "Even if there is, what can it prove?"

"You have the same tissue as Jin Meixian, and there are some crystal particles left on the table after the potassium cyanide solution evaporated. I think this is already very obvious evidence."

"Why would I kill her?" He was still stubborn.

Jian Jing: "Because Jin Meixian threatened you with Yao Yue's matter, you were afraid that the matter would be exposed and affect your future. After all, the civil service examination has a political review, you don't want to lose your career, right?"

President Fang didn't expect that she even found out about Yao Yue. He moved his lips and wanted to refute, but he didn't know where to start.

Wang Ruoke opened his mouth: "Actually, it was me..."

Before he could finish his words, Ji Feng asked: "Where did you get the potassium cyanide? When did you come to the student union? How did you get the key? Who has it?"

After several questions, Wang Ruoke wisely shut up.

"Fang Tao, do you have anything else to say?" Ji Feng asked.

President Fang said: "I want to find a lawyer."

"You've watched too many American dramas. Find a lawyer after you go to court. The state will arrange it for you." Ji Feng said with a smile, "Now, you should come back to the police station with me."

He escorted the person into the police car, and before closing the door, he couldn't help asking Jian Jing: "Teacher Jian, I have a question. Aren't girls afraid of wiping off their makeup if they wipe it with a tissue? Why does she wipe her face?"

Jian Jing curled her lips, knowing that he couldn't hold it back.

"This is a coincidence. Fang Tao was probably thinking of wiping his mouth." She seemed to be talking about a trivial matter, "But Jin Meixian has acne, so she must have oily skin, which is prone to oiliness. Before she put on makeup, she must have used a tissue to absorb and press her face, and then put on powder."

She glanced at him and deliberately said, "In fact, it's all your fault for today's case. You kept talking to me about the powder box, otherwise I might have thought of it yesterday."

Ji Feng: "...I know shit."

"What does that have to do with me? Who made you fail your job?" Jian Jing raised her chin and took cheerful steps in her high-heeled boots, "Anyway, today's case is my fault~~"