Conan started from the chat group

At the same time, some police officers questioned the nearby people and got an important piece of information. Some witnesses saw a man wearing a hat and a coat kill the victim before the power outage, and then took advantage of the power outage to snatch the victim's phone. letter.

"Probably so. At that time, the victim was about to go up the escalator. The murderer suddenly killed the victim from behind. It happened that there was a power outage. The two fought. The murderer snatched the contents of the letter. The victim just took the escalator to go upstairs," Gao Mushe said. .

Hearing the words, the Mumu Police Department squeezed his chin and said, "Did the witnesses see that the murderer walked downstairs at that time, or followed him upstairs."

"According to eyewitnesses, the two scrambled for the letter and went upstairs on the escalator," Takagi said.

"Then why didn't he yell loudly?" Mumu Police Department was a little puzzled.

"Uh, the witnesses thought they were making a movie," Takagi said with a laugh.

"" Mumu Police Department.

No matter what the witnesses thought at the time, he was just an ordinary person. Even if he saw the murderer committing the crime, he didn't dare to step forward to stop it. For this kind of thing, he was afraid to hide as far away as possible.

Situ Xiu could imagine that the murderer was wearing a coat, mask, hat and gloves at the time. He had already planned to murder, because it was related to the serious crime of embezzlement of public funds. Although he would not die, he would go to jail.

Nami: "In the list just now, there is a name named Triangle Moe. I think it will be her, group leader, I want to reason."

Nami: "ΔXing means triangle, ox means cute, it must be her".

Meng Hao: "ox stands for cute? How do you explain it?"

Nami: "x is dear and female, and so is o, so it must be moe."

Everyone: "".

Nami: "Also, look at Moe, this must be a female name, Triangle Moe."

Ye Fan: "With your explanation, Yu Jiang of the Three Kingdoms is also possible. Δ is three, country is an abbreviation of 0, and x is a woman, which is Yu Jiang."

Nami: "".

Huang Rong was stunned: "Guo is the abbreviation of o, what does it mean?".

Ye Fan: "Sometimes abbreviation, just draw an o, it can also represent mouth."

Yang Guang, Emperor Yang of the Sui Dynasty: "It turns out that your era can still be shortened like this. Can you tell?"

Zhong Shan: "Ordinary people may not understand it, but those who are familiar with it understand it. I remember that some signatures are simpler. Just draw a few circles and it will be the name of that person."

Nie Xiaoqian: "If o is 口 or 国, then what about x and Δ? What is this abbreviation?"

Shen Gongbao, who was diving silently, was a little dazed. He felt that his train of thought could not keep up with the rhythm of the group of friends.

The group of friends were discussing, and Situ Xiu and the others were also discussing.

Koizumi Hongzi frowned, and said, "oxΔ, is it Tridenta?"

Situ Xiu: "Sister Hongzi, why?"

Koizumi Hongzi smiled slightly: "Put x in o, isn't it a field? Then Δ is a triangle field."

The corner of Situ Xiu's mouth twitched twice: "There is no one named San Santian."

"That's right." Koizumi Hongzi smiled.

"Hey, does that x refer to multiplication, and oxΔ refers to mathematical formulas?" Sonoko said suddenly.

"But, why oxΔ?" Xiaolan was puzzled.

"Because if you write a mathematical formula on the envelope, it will definitely be annihilated by the murderer, so use o and Δ instead!" Sonoko explained.

"What does that mean?" Koizumi Hongzi was a little confused.

"I see, the murderer must be a mathematician," Judy said.

"" Situ Xiu, Conan.

Upon hearing this, the Mumu Police Department immediately asked the next student, Fan Jiu, if there are any employees who are excellent in mathematics in the company, and the answer was that the company mainly focuses on liberal arts talents.

This analysis is wrong.

Xiaolan suddenly said: "Does x refer to that thing?"

"Huh?" Everyone wondered.

Xiaolan blushed and said, "That's right, that cute mark that Teacher Judy mentioned in class!"

"Impossible, absolutely impossible." Sonoko, Koizumi Hongzi, and Judy all laughed.

Xiao Lan frowned, what is x, this group of people have never told her, it's too bad.

"The x you are talking about is something that girls often write at the end of letters?" Takagi said with a smile.

"Yes!" Judy said.

Xiaolan was surprised: "Officer Takagi, do you know what x means?"

"Hee hee, this means that Officer Takagi often receives that kind of letter, doesn't it?" Sonoko Diao said.

"No, it's just someone else's prank." Takagi Sherlock smiled.

Hearing this, the Mumu Police Department asked curiously, "What do you mean by x?"

"Officer, it doesn't really matter, the x doesn't mean it's the x of this oxΔ, it doesn't matter," Takagi explained.

Xiaolan felt itchy in her heart when she heard the words, she looked helpless, no one said anything, it was all charades.

"Hey, look, the left side of this o, which is the farthest edge of the envelope, is stained with blood."

Conan held the victim's envelope, pointed to the blood stain on the side of o, and asked, "Does this mean that the deceased wrote something other than oxΔ?"

"This has been checked, and no similar bloodstains were found," Takagi explained.

"Officer, have you checked the treads of the escalator?".

Conan raised his finger and pointed to the escalator, and said, "Although the escalator stopped moving now, it was moving when the body was found, so the words written by the victim in blood may remain on a certain pedal."

"That makes sense, Takagi." The police department's eyes lit up, and he immediately ordered Takagi to start the electric elevator.

"But, it's been such a long time, those words written in blood have long since disappeared," Yuanzi said.

"Sister Sonoko, there's no problem. There is a solution called luminol, which will have a magical effect when sprayed on the blood. It will fluoresce like magic, isn't it, Officer Takagi?" Conan said with a smile.

"Yeah." Takagi She was slightly taken aback, how did this brat know about such a high-tech thing.

Conan pulled Takagi She, put it in his ear, and asked in a low voice, "Officer Takagi, what does that x mean?"