Science solves cases? No, I am an immortal cultivator!

Kitagawa Taki certainly didn't know what had happened to Hei Yu Chiying these days.

He was invited to attend a special investigation meeting of the Metropolitan Police Department.

Also traveling with them was Kogoro Mori.

"Mr. Kitagawa, Mr. Mori!"

Takagi Shigeru greeted the two of them warmly.

"Oh, Officer Takagi, I heard that this is a large-scale serial homicide case?" asked Kogoro Mouri.

"That's right!" Takagi Shigeru nodded and introduced: "We found a mahjong tile at the murder scene that happened at the toll gate in Odawara City the day before yesterday.

Several other cases involving mahjong tiles occurred in various places including Tokyo, Kanagawa, Nagano, Shizuoka, and Saitama."

Kogoro Mouri took a deep breath. The scope was indeed wide enough and the nature of the case was extremely bad.

"Anyway, the details of the case will be explained in detail in the meeting. Please follow me!"

As he said that, Takagi Shigeru brought the two of them to the conference room.

The conference room was already filled with police officers from various counties, many of whom were acquaintances.

Yamato Gansuke, Yokomizo Sango, Yamamura Cao...

"Mr. Kitagawa!"

Shancun Cao saw his benefactor "Beichuan Taki" at a glance, and hurriedly came up to the few people in three or two steps.

Kitagawa Taki nodded slightly, "Officer Yamamura."

Shancuncao smiled and took out his police officer ID, pointing to the police rank on his name with his left hand to show it to the few people.

"Inspector!?" Kogoro Mouri widened his eyes. This crazy policeman was promoted to inspector so gorgeously?

"Thanks to Mr. Beichuan, I got a promotion!"

Shancuncao had a smile on his face and actually saluted in the British military style.

"Gunma Prefectural Police..." The corners of Kogoro Mouri's mouth twitched. Is there really no one available in Gunma Prefecture?

Beichuan Taki smiled and said, "Congratulations."

"By the way, Mr. Beichuan, why are you here?" After showing off, Shancuncao finally remembered the important matter.

Takagi Shigeru introduced, "Mr. Kitagawa and Mr. Mori were invited by Administrator Matsumoto to serve as special advisors for this joint investigation."

Just then, Inspector Megure coughed at the door of the conference room.

When they looked back, they saw Inspector Megure, who had changed into a suit for the first time, followed by Shiratori Jinzaburo and Matsumoto Kiyonaga, who had a face full of flesh and a fierce look.

"shall we start now?"

Several people returned to their seats, while Kitagawa Taki and Maori Kogoro sat in the advisory seats.

Photos of the six homicide victims were posted on the whiteboard, and the story was told by Shiratori Jinzaburo.

"Except for the sixth case, the first five cases were all stabbed with knives. Furthermore, it is suspected that all five victims were first stunned with a stun gun, taken to another location, killed, and their bodies abandoned."

Kogoro Mouri nodded slightly, these cases were undoubtedly confirmed to be serial murders.

Shiratori Renzaburo paused for a moment, "There's a question here—why did the murderer take the victim to another place before committing the crime?"

"Secondly, mahjong tiles with red circles painted on them and English letters and vertical black lines on the back were found next to the bodies."

Shiratori Jinzaburo gestured to everyone to check the information on the table.

Kitagawa Taki opened it and took a look. The mahjong tiles were one one-tube and five seven-tube tiles, with two A's, E's, H's, Z's and an upside-down L as English letters.

Shiratori Renzaburo continued, "In addition, the murderer took away a personal item from each of the six victims: a necklace, an amulet, a drawstring bag, a motorcycle keychain, a makeup mirror, and a doll."

"Could it be that the perverted murderer took it away as a souvenir?" Kogoro Mouri muttered to Kitagawa Taki beside him.

Shiratori Jinzaburo: "Finally, there's the death message left by Ryuzaki, the sixth victim of the case - Tanabata, kyo (romanization)."

As soon as he finished speaking, the police officers below began to communicate in a low voice. There was too much information in these six serial murders and it was difficult to analyze.

Kogoro Maori glanced at everyone, stood up confidently and walked to the whiteboard.

"I'm saying, aren't you all overthinking this? Since it's mahjong tiles, doesn't that mean mahjong? The motive for the murder is clearly a mahjong dispute!"

Kogoro Mouri's words immediately sparked discussion among the police.

Kitagawa Taki held his forehead slightly, and Maori Kogoro gave the wrong answer again.

Maori Kogoro continued, "The murderer left behind one bamboo and seven bamboos, which means there were eight people in the mahjong game. There are still two circles in the seven bamboos that have not been colored. One represents the murderer himself, and the other is the last victim."

Inspector Megure was shocked and asked, "Doesn't that mean the murderer will continue to commit crimes?"

"That's right!" Kogoro Mouri nodded confidently.

Matsumoto Seinaga, who was sitting next to Inspector Megure, frowned slightly when he heard this.

Shiratori Jinzaburo questioned: "But Mr. Maori, if you want to represent eight people, why don't you just use eight tubes?"

Maori Kogoro raised his index finger and shook it. "The murderer chose the One and Seven of Tongs for a reason. He actually wanted to use these two cards to draw a winning hand. And they must be super good cards!"

"So that's how it is!" Yokogami's exclamation came from the audience. "It's just that someone used a low-brow method to break the game."

Yamamura Cao continued, "That's why the murderer was so angry, right?"

Maori Kogoro said affirmatively: "That must be right. According to my guess, the others must be some unscrupulous guys!"

But not everyone buys his story.

Yui Uehara asked, "Mr. Maori, what do those letters mean?"

Takagi Wataru raised his hand, "And is there a death message left by Mr. Ryuzaki?"

"Why did the murderer take the victim somewhere else?" Yamato Gansuke glanced at Uehara Yui in the front row and asked his question.

He had tried to contact Hara Yui before, but failed.

I met her at the Metropolitan Police Department today. Uehara Yui was very calm, and there was a vague sense of alienation.

Faced with all kinds of questions, Kogoro Mouri was confused and didn't know how to answer for a while.

Seeing this, Beichuan Taki said, "For these issues, I think we should start with the social relationships among the people.

The murderer deliberately left this information, which definitely cannot be a random killing. There must be some connection between these victims. "

Miwako Sato agreed: "Mr. Kitagawa's words make a lot of sense. Finding their common ground is the key to solving the case."

The police officers in the audience also nodded. Kitagawa Taki's remarks sounded much more reliable than Maori Kogoro's.

Kogoro Mouri took the opportunity to quickly return to his seat.

Kitagawa Taki wanted to say something when he felt the phone in his pocket vibrating. He took it out and saw that it was a message from Hei Yu Chiying.

The content was very brief, with only an address, which was the name of a bar...