Conan pointed his finger on the ground and slid it back and forth across several points, but the results of each gesture made him shake his head.

With just these six points, there are too many shapes that can be pieced together.

With Conan's imagination, he thought of more than a dozen possible graphic styles in a short time, but each one felt a bit far-fetched.

So, Qin Zhibo continued: "At this time, we have to contact the mahjong tiles on the corpse to see..."

"There are two types of mahjong tiles on the corpse, one tube and seven tubes, so we'd better treat the points on the map as two types."

As he spoke, Qin Zhibo marked the map point of the first corpse scene with a marker pen.

"Next, we can look at the letters on the back of the mahjong tiles. What letters do you think these are?"

Conan took the code paper, with photos of the mahjong tiles on site clearly printed on it.

All the letters are A,E,A,Γ,H,Z.

Although the police have been calling these letters "English letters" during the search meeting, it is obvious that one of the letters is not English.

The letter looks like an upside-down L or an F with a horizontal bar missing.

But the murderer could not have written it wrong, nor could he have written the English L like this on purpose.

Suddenly, Conan's eyes froze, and he pulled out an ordinary alphabet from the complicated ocean of knowledge in his mind.

"These are Greek letters!"

Greek letters are also case-sensitive, and many of the uppercase letters are very similar to English letters, so they are often confused.

But this Γ is absolutely unmistakable.

"Are these Greek letters?"

Dr. A Li also lowered his head and took a closer look, then nodded, "It does look like..."

"However, the main application field of Greek letters now is science, especially mathematics. What did the murderer want to express with these letters?"

Qin Zhibo continued to point out, "Actually, many capital letters in Greek letters are the same as or very similar to Latin letters, so these capital letters are rarely used."

"But the murderer deliberately used so many capital letters that are similar to English letters, probably to confuse the meaning."

"Then let's convert these uppercase letters into lowercase letters and see if we find anything new..."

Conan's eyes moved slightly, and he immediately took a pen and wrote the lowercase versions of these capital letters on the paper.

They are α, ε, α, γ, η, ζ respectively.

Looking at these seven letters, Conan held his chin and fell into deep thought again.

Although the reasoning has reached this stage, it is still not easy to figure out what it means based on just these few letters.

So Qin Zhibo further reminded, "Don't forget to distinguish the letters according to the different colors of mahjong..."

"Also, don't forget the general areas of application of the Greek alphabet."

After Qin Zhibo's two prompts, Conan's brain suddenly had an idea, and he suddenly thought of something.

Could it be...

Conan quickly picked up the marker and scribbled between several points on the map, quickly sketching out an incomplete shape.

"Eh?"

Dr. A Li bent down and looked at this familiar shape, and said doubtfully: "This is..."

Just when Conan was about to open his mouth to answer confidently, a faint voice suddenly came from beside him.

"It's the Big Dipper."

Conan and Dr. Ali turned around and saw that Haibara Ai was standing next to them at some point.

At this time, Haiyuan Ai was wearing a long white pajamas dress, her eyelids drooping listlessly, and she glanced at the map on the table.

"Hui, Huiyuan..." Conan was startled by the sudden appearance of Huiyuan Ai, "Why are you awake?"

"What? Can't I wake up?"

Haihara Ai cast a scrutinizing look at Conan, "Or are you doing something sinister behind my back?"

"Where is it?!"

"Haha~"

Conan smiled and scratched his head, but this suspicious attitude made Haihara Ai even more suspicious.

Haiyuan Ai glanced at the other objects on the table and saw the code paper with the mahjong tiles printed on it. He raised his finger and asked lightly.

"What's that?"

"That's...a homework puzzle left by the school teacher!"

As soon as Conan blurted out his words, he regretted them in his heart.

Haibara Ai is in the same class as herself, how can she not know what homework the school teacher leaves?

And which teacher gives mahjong homework to primary school students?

Haibara Ai also immediately saw through Conan's lies, raised her hand to grab the code paper, and naturally saw the victim's information marked on it.

"Is this case information?" Haiyuan Ai shook the piece of paper in his hand.

"Yes, yes!" Conan scratched his head and explained with a silly smile: "Uncle Qin got the information about a serial murder case from the police, so he came to me to discuss it~"

"Discuss?" Hui Yuan Ai glanced at Qin Zhibo, "Does he need to discuss with you?"

This is quite hurtful.

Because the implication of this sentence is that with Qin Zhibo's ability, there is no need to discuss the case with him, Conan.

The next second, Conan also understood this meaning and suddenly grinned.

"You take care of me!"

"I don't care about you, I just came to see what there is to eat..."

After saying that, the nosy Haihara Ai walked to the bar and skillfully prepared various simple breakfast ingredients.

Since Haibara Ai usually makes breakfast, she doesn't need Dr. Ali's help. She can do it by herself.

At this time, Dr. A Li also lowered his head and whispered to Conan's head: "Shinichi, is it okay not to tell Xiao Ai about this?"

"Well...this is also for her own good."

After saying that, Conan turned to look at Qin Zhibo and confidently reasoned: "This pattern should be the Big Dipper, right?"

"According to Bayer's stellar nomenclature, stars will be named according to their constellation + Greek alphabet."

"The five letters on the seven-tube mahjong tiles are ε Ursa Major, Ursa Major, γ Ursa Major, eta Ursa Major, and ζ Ursa Major, which are the five stars of the Big Dipper."

"And the letter corresponding to the cylinder is Polaris, which is Alpha Ursa Minor."

"This means that the locations of all the victims' deaths should form a complete map of the Big Dipper and Polaris."

"There are currently six victims, two short of a complete figure..."

Thanks to Wu Yuetian for the 200 reward!
Chapter completed!