The person Su Fengzi found was named Ye Yan, a professor in the Department of Mathematics of T University.

At eleven o'clock in the evening, Professor Ye hurried to the underground mall with the key to the door.

Most mathematicians are uninhibited, and Professor Ye is probably the best among them, with his messy curly hair, wearing a pair of cotton slippers, and he didn't talk much after pushing the door in, panting and throwing the key on the table, he asked, "What code do you want to solve?" ”

Lin Chen glanced at Ye Yanzhi's appearance, and could almost imagine what kind of ghostly mood the other party was when he received Su Fengzi's call, probably although he wanted to drop the phone, but when he thought that the caller was Su Fengzi, he could only obediently get up from the bed and go downstairs to take a taxi.

Wang Chao got out of the way in front of the computer, and Jiang Chao's police officers had already sent the book of "Discrete Mathematics".

Ye Yan quickly flipped through the book, glanced at the price list that had been restored on the screen, and then said, "Oh, it's indeed a password." ”

"Professor, are you sure, why do we just look at it, it's all garbled!"

"Because you don't read much." Ye Yan said very angrily, as if he didn't want to stay longer for a second, he casually pulled a sticky note, wrote down a few words, and then slapped it on the table and asked, "Is there anything else, I'll leave first." ”

Lin Chen glanced at Su Fengzi, who was leaning against the window like no one else, still looking at the angry Professor Ye with a faint smile and said, "Why are you in such a hurry, let's go have a supper together?" ”

"Am I sick, going to supper with you?"

Su Fengzi was probably used to his attitude, and he was not angry, but still laughed.

Seeing that Ye Yan was about to leave, Xing Conglian hurriedly stepped forward: "Please wait a moment Professor Ye, our technicians are still restoring some images, maybe we will trouble you later." ”

"Then why did you call me so early?" Although Ye Yanzhi was very polite, he still sat down.

Lin Chen picked up the note.

There are two short sentences written on it.

【4.10HomeFarewellDinner】

【Wirwarentotundkonntenatmen.】

In the dim light, the black and white words became more and more blurred.

Although he is unkempt, I have to say that Ye Yan's words are really good.

"Hey, the book is all in Chinese, why did it decipher it into English?" In line with the principle of asking questions if you don't understand, Comrade Wang Chao began to ask questions again.

But Professor Ye obviously didn't have much consciousness to teach and educate people, he hugged his arms, and said coldly in the direction of Su Fengzi: "Am I still responsible for teaching the police how to solve cases?" ”

"Of course not." Su Fengzi replied.

The atmosphere of these two people is subtly weird, specifically, probably as long as Su Fengzi is there, the atmosphere will not be normal.

Lin Chen looked at the two sentences translated by Ye Yan and handed the note to Xing Conglian.

"What was the number of the first one?" The criminal servant asked.

"April 8th." Wang Chao replied very consciously.

"What about the second one?"

"April 10th, good luck, boss, they cleared the field on April 10th, and that was the last word they left before clearing the field."

"What do you think?"

Lin Chen listened to the sentence Conglian suddenly asked him, and after pondering for a while, he said slowly: "The first one is very easy to understand, it is more like a schedule, the itinerary for April 10th was arranged on April 8th, Home should be the location, referring to their usual meeting place, then farewell dinner......"

"It's more appropriate to translate it as a casual meal." The criminal Conglian took out his mobile phone again and called Jiang Chao: "Lao Jiang, let your subordinates check the whereabouts of the six deceased on April 10 to see if there is a meeting point." ”

"Article 2......" Lin Chen naturally turned his head and asked Conglian, "What do you mean?" ”

"In French, it should be a poem." Torture Conglian said.

"I still rely on poetry, and I am so high and good at literature and art!" Wang Chao looked up from the screen again and interjected, "Isn't this sick, spend a lot of effort to encrypt a poem, and no one will suspect it if you write it directly?" ”

"It's a different feeling." Lin Chen interrupted the young man's words.

Not only the torturer, but even Ye Yan looked at him with puzzled eyes.

At night, the underground is so quiet that there is no sound of footsteps.

Lin Chen said softly: "What it creates is a beautiful illusion, a code word that everyone keeps reciting silently in their hearts, and it will give everyone incomparably powerful power. ”

After the dinner party, before death begins, repeat the silent recitation, remembering it.

"We're dead, but we're able to breathe."

Xing Conglian's voice was low, and his melodious voice like a cello echoed in his ears.

Lin Chen was stunned for a moment, only to realize that he was talking about that poem.

Without indulging in the poem's intention of death, Xing Conglian typed the key words into his mobile phone, and then quickly searched for the full text.

Memories of France

Recall with me, the skies of Paris, the Colchicans......

Let's go to the flower girl to buy hearts:

Those hearts are blue and bloom in the water.

It was raining in our room,

The neighbor, Mr. Lyson, came in, a skinny man.

We played and I lost my eyeballs;

You lent me my hair, and you lost it all, and he defeated us.

He walked through the door, and the rain chased after him.

We are dead, but we can breathe.

The poem was written by Paul Celan, a Jewish poet who had endured many hardships.

"What does that mean?" Ye Yan also glanced at it and couldn't help but ask.

Lin Chen shook his head, a little speechless.

Anyone who has read this poem can appreciate the cool and beautiful mood of death in it.

It's so attractive for those students, death isn't bloody, it's so beautiful.

This suddenly reminded him of the scene when his little sister jumped down from the blue to transparent sky, and she was so happy, as if death was just another form of life.

The mobile phone passed from person to person, and Xing Conglian took a cigarette between his fingertips and looked at him with more intense green eyes: "This poem must have meaning." ”

That was the last sentence left by the organization to the believers before the clearance, and in addition to encouragement and incitement, it must have symbolic meaning.

Of course, Lin Chen knew that what Xing Conglian wanted was to deduce an exact address from the poem, and at 18:00 o'clock tomorrow, the exact address where the students would end their lives.

But the problem is that the intention in poetry is complex and varied, and what is even more complicated is that different people have thousands of different understandings of the same poetry.

We are dead, but we can breathe......

So, what is your understanding?

"Buying hearts, or blue? The heart is blue, floating in the water? The water in spring is all green, and the blue is only the sea, but Yongchuan is also close to the sea...... "In this atmosphere, there is only the dynasty that can talk non-stop," playing cards? Is there a card tournament in the university town recently, probably not, neighbor Mr. Lyson...... The rain chased him from behind...... Who is he? ”

The young man kept asking, but the captain of the criminal police couldn't help it and knocked him on the back of the head.

"Let's use the elimination method first." Lin Chen paused and said to the dynasty, "Bring out the topographic map of Yongchuan University City." ”

"Gotcha!" The young man's hand was up and down, and a gray 3D satellite map spread out, "But Ah Chen, why do you think it's in Yongchuan University Town, should we focus on Yongchuan University first?" ”

"Now it seems that it is unlikely that the incident will happen tomorrow at Yongchuan University, if I am the final mastermind, I will definitely use the first two collectives to attract the attention of the police, and arrange the final highlight in a place that everyone expects......" Lin Chen said, looking at Xing Conglian, but found that the other party was just frowning and thinking deeply, and there was no reaction, so he continued, "Since the primary purpose of the mastermind behind the scenes is to make money through live broadcasting, then we can exclude all areas where there is no monitoring or relatively weak monitoring coverage." ”

The dynasty quickly turned all unmonitored areas into grey.

"Actually, the public area is easy to say, but many schools have cameras in the classrooms, what if they rush in and attack the school building?" Wang Dynasty looked at the many areas that were still bright and said worriedly.

"Since the object of their hatred is the ordinary classmates around them, they will inevitably choose a crowded place where students gather relatively well......," Lin Chen paused, and said to Wang Chao, "Please compile a list of student activities for each university in the university town tomorrow for me." ”

"It's been sorted out." Wang Chao took out a piece of paper from his schoolbag and said with a smile, "The boss let me do it, be prepared!" ”

Lin Chen looked at the dozens of activities on the A4 paper, large and small, and finally understood the pressure of the criminal slave company.

Probably a long time ago, the criminal conglian had already considered the issue of suspending various activities and controlling them, but even if the collective activities on campus could be suspended, there were still classrooms, canteens, libraries and other crowded places, and it was impossible for the more than 200,000 students in the entire university town to disappear without a trace overnight.

Lin Chen stared at the satellite image, a little distracted for a while.

He suddenly listened to the torture Conglian and asked, "What is the most dangerous and uncontrollable situation in your imagination?" ”

"You're trying to ask, if it's me, how can I kill the most people in this situation, right?"

"You can understand it that way."

"They are a group, and only collective activities can make them feel the short-term and incomparably powerful power......" Lin Chen took a deep breath and said, "I will choose a closed place that outsiders cannot break through in a short period of time and carry out massacres." ”

After he said this, no one in the shop spoke anymore.

A rotating display stand is still gently turning, and the crystal ornaments reflect a colorful light.

"That would eliminate all open spaces." Xing Conglian took a pen, crossed out all the outdoor activities on the paper, and continued: "The cafeteria is unlikely, the canteen is too dense, unless there are firearms, it is difficult for the minority group to control the number of students several times their number, and ......"

"The cafeteria is not elegant and nice enough." Lin Chen said.

"Killing people has to be elegant, don't you have to have a BGM!" Wang Dynasty said angrily.

"Since it wants to be elegant and beautiful, it is obviously not beautiful enough for someone to resist...... "Xing Conglian seemed to think of something, and asked Lin Chen, "What is the possibility that they will carry out the killing according to the content of that poem." ”

"Poetry has existed for a long time, if it is a code word or a slogan, then they should hope that the final killing feast can be in line with the artistic conception......" Lin Chen pondered for a moment, and suddenly looked at the punishment conglian, "You just said that the accusation zhì?" ”

The torturer raised his eyebrows, obviously thinking of the same place as him.

The two suddenly looked at each other, but did not speak, and the little comrade of the dynasty began to be anxious, "What's wrong with the accusation, how can they control the innocent students?" ”

"Colchicum ......" Lin Chen looked at the dynasty and said, "You can find a photo to see." ”

When the young man heard this, he quickly entered the keyword in the picture search box, he looked at the flowers that instantly covered the entire screen, and after a while, he said indifferently: "This is, blue heart?" ”

"Colchicum is roughly pink, but when the light is dim, it will appear blue-purple." Lin Chen explained.

"So, they're going to kill in the evening?" Wang Dynasty swallowed, "But what is the blue heart floating in the water......

"Colchicine is very toxic, with a lethal dose of about 0.8mg/kg." Lin Chen said lightly, "But it is relatively bitter, and it will take a certain dose to death, so its effect should still make the students who eat it by mistake weaker and less resistant." ”

"Cast ...... Poisoning? Wang Dynasty was almost frightened, "Rely on, what should we do, will they poison the water dispenser, do we have to thoroughly check all the water sources overnight, the bottled water in the school classrooms and libraries, and the mineral water that will be distributed at the event site?" "But this workload is too much," what if the problem is the source of drinking water manufacturers, which has already entered the market! ”

The young man's brain hole opened wider and wider, and Lin Chen stopped him: "It won't be so difficult, let's dissect it, first, we haven't received any reports of colchicine poisoning yet, assuming that there is a batch of problematic water sources, then it has not yet flowed into the market, and supermarket distribution and school water delivery will not work late at night, so we have time to stop this part of the water source problem." Lin Chen looked at Xing Conglian and said, "Second, if it is a poisoning incident for student activities, it is very likely that that the batch of water has already been procured and will only be distributed to the students at the appropriate time, so it will be relatively difficult to stop similar free drinks; However, the most difficult thing to control is the third point, if colchicine is in the hands of the members of the organization, and they personally poison it, then the boiling water room in the school and the water dispenser in the classroom will become the target......"

"The third point is okay, it's scary to come together with the three~"

Su Fengzi's voice came from the corner.

"Colchicine is very bitter, students can easily find out that there is a problem with the water when they drink it, and the poisoning of public drinking water facilities cannot control the amount of water consumed by students, if there is similar poisoning, it seems that at most, it will be used to distract the police and create a panic ......atmosphere," the convict said, holding a cigarette, "The teaching building and the library can be ruled out, and it should be a fixed-point attack." ”

Hearing this, Lin Chen looked at the list of tomorrow's activities compiled by the dynasty again, although most of the school activities started after class at half past five, some daytime activities could still be excluded.

If poisoning is successful, drinking plenty of water is essential, so knowledge competitions, party ceremonies, college conferences, and lectures can be temporarily ruled out......

The rest is an indoor basketball game after school, as well as activities such as the A University Campus Singer Contest and the T University Dance Festival......

It circled these three activities with a red pen, and then looked at the Torture Slave Company.

Tonight, Xing Conglian had been saying very little, especially since just now, he had spent most of his time pondering. Obviously, when it came to such a difficult decision, it was a little difficult for even the punishment to make up his mind.

In fact, there is still some time before tomorrow evening's live broadcast, and if they make up their minds, then it is entirely possible to prevent tomorrow's poisoning.

The deployment and control of the three specific locations is relatively simple, and it is easy to solve the problem of catching turtles in the urn or catching them all.

However, if they choose this way of dealing with it, it means that they can't startle the snake in advance, and they have to wait quietly for the other party to act.

However, this kind of waiting puts public safety at great risk, not only by watching the targeted students drink the highly toxic liquid and waiting for them to be poisoned, but also by ignoring the poisoning of public water sources that may be deposited.

If there are any casualties, they cannot afford to bear the heavy responsibility.

Or, they can choose the simplest solution to the problem: go straight out, smash open the coffee bar across the street, and point the middle finger at the surveillance camera and write down all their speculations.

But the question is, then what......

Then, it may be that the group will order a halt and the group members will continue to hibernate, or it may be that there is a second plan within the group, and they will not be able to guess where the next dangerous event will be......

The organization could even have its members go to a place en masse and drink the poisonous water in front of all the teachers and students in the school.

Corpses are all over the field, mourning all over the sky, why not be happy?

"We can't take any chances." The torturer finally spoke.

Lin Chen didn't expect that the decision of the criminal slave company would be like this?

"Is there any way to change the will of this group by six o'clock tomorrow night?"

He listened to him ask very, very seriously.