Conan started from the chat group

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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."

The names mentioned by the above two people are all names on the suspect list.

Nami: "".

It seems to make sense.

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

Ye Fan: "Sometimes abbreviation, just draw an o, which means country, and 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 combine it with Δ to get 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.

"Hiss, 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.

"Then what does this mean?" Koizumi Hongzi was a little confused.

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

"" 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.

Situ Xiu was also speechless. The Mumu Police Department actually went to ask others. No wonder the current police must rely on detectives. The weakening is terrible.

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 curled her lips, this group of people never told her what x is, 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, and asked in a low voice, "Officer Takagi, what does that x mean?"

"Huh?" Takagi She was surprised.

"That's what Sister Yuanzi and the others said just now," Conan said with a serious expression.

"Hahaha, you are still young, there is no need to know!"

Takagi smiled and touched Conan's head, feeling very happy, this little guy still has something he doesn't understand.

"Kacha" suddenly flashed.

"You don't have to worry about anything in the year of the dog. Officer Takagi, you will be promoted and your salary will be raised soon."

Situ Xiu smiled slightly, and the camera in his hand captured the scene just now, which was very harmonious and loving.

"" Takagi She and Conan both looked confused.

Looking at the camera in Situ Xiu's hand, Gao Mushe didn't know what to say, he laughed dryly, and turned to deal with the elevator.

Conan put his dead fish eyes: "Xiaoxiu, delete the photo."