Conan took everyone through the tunnel, although the road is very complicated, but Conan's choice of road is very clean and neat, without any mud and water, and the route through here has obviously been familiar to Conan.

When Conan finally stopped, the scene around him was no longer visible without a flashlight - everyone was now in a hall a few meters square, and four permanent lights were installed on the roof of the hall, so everyone could be sure that they were standing at a crossroads.

"No matter how you look at it, this is the part of the next prompt... Conan looked at the crowd behind him and shrugged. "I'm sorry, I haven't been able to crack the part here, so please don't worry."

"Conan-kun... Ayumi said.

"If you're tired," Conan said in his thoughts, just coping. "You can sit down casually, Mr. Tadao has a tissue, you can borrow one from him...

"Not really!" Ayumi shook her head. "How the hell did you deduce how to get here?"

"That's..." Conan pouted. "You all want to hear it?"

"Hmm!" Everyone nodded vigorously.

"Write down the first two lines of 'Hidden afternoon horses and other monkeys, the road suddenly detours, and the snake and sheep look at the dragon and are confused' according to the ancient bamboo slip writing method (starting from the right, writing from the top to the bottom, and changing to the left line after one line is written). As you can see, because this is an ancient script, it was written in katakana (before World War II, both katakana and kanji were used in formula writing), so that we can arrange them one by one. ”

Conan said as he showed the crossword box he had written in Tadao's notebook.

"The Beidou has seven stars, so the Beidou represents 7, and the Beidou side also means filling in the katakana square with a side length of 7 squares - those two lines have exactly 49 hiragana to verify my inference - so the whole table will become like this."

Conan showed everyone a table with a hiragana in each box.

The columns from right to left are as follows

TA-DA-SHI-KI-HA-U-MA

NO-A-YU-MI-TO-SHI-TE

SA-RU-NI-CHI-KA-DU-KI

A-RA-WA-RE-HE-BI-KA

HI-TSU-JI-WO-MI-CHI-N

KI-NA-RU-NI-YU-U-TO

WA-NO-I-NO-CHI-NA-SU

"And then?" Tadao asked impatiently.

In anticipation, Conan placed the tip of his pen on the lattice (TA) in the upper right corner and slid down. However, after drawing the "hidden" katakana, Conan's pen tip did not continue to draw downwards, but to the left!

Tadao immediately changed to a stunned expression, because every time Conan drew a grid, there must be one or two of the next three grids that could be drawn, and the katakana in the grid that Conan had just drawn could be connected to the katakana in the grid that Conan had just drawn, and when Conan's pen tip stopped, Tadao read out the katakana in the grid that Conan's pen tip had crossed.

"The hidden road calls to me... (TA-DA-SHI-KI-MI-CHI-NI-WA-RE-WO-MI-CHI-BI-KA-N-TO-SU)

"That's right," Conan replied with a smile. "This sentence is hidden in such a way in two lines of text that seem to make little sense!"

"And where are we going here?" Tadao asked. "I'm afraid there's only one way to go right here...

"Since the green, standing in the yellow, for the black then the Nai will fall forever, for the red is full of cinnabar, only white can pass... Conan said the code words he heard earlier (I think the code words are written like this, and at the end of this article, I will rewrite the previous vernacular-like code words that are easy for you to understand into an archaic version)

"Why do I think this is a proposition no matter how I hear it? . . ." The corners of Tadao's mouth twitched.

"yes... Conan also had a solemn face.

"Let's take a walk... Yuan Tai pursed his lips and said disdainfully. "As long as you are more cautious, there should be no problem."

"Hey!" Conan was about to dissuade him when he saw that Motota had already walked towards the entrance on the right.

"Don't go over!" Tadao was taken aback. "Come back soon!"

In an instant, with a scream, Yuan Tai disappeared in front of everyone's eyes.

"Genta!" Conan exclaimed, and then ran to the place where Motota had disappeared.

"Don't go!" Tadao hurriedly reminded. "Naraku will fall forever!"

“！！！” After hearing this, Conan stopped as if he had been immobilized, and then confirmed the condition under his feet.

If you walk another 20 centimeters ahead, Conan will fall into a fall trap that is close in front of him - a deep pit with no bottom in sight.

Right in front of Conan, Motota's hand gripped the edge of the trap like a man in the water who grabbed the log.

"Come here!" Conan took a look at the situation and realized that he might not be able to pull Motota back alone, so he shouted for help.

With everyone's concerted efforts, the big fat boy Yuantai was finally dragged up, and everyone was lying next to the pit exhausted.

"Can you stop being so aggressive next time?" Conan complained. "You almost killed us all!"

"I'm sorry... Yuan Tai said in a low mood.

"So which way should we go? . . . Tadao said helplessly. "If this is Naraku's eternal fall, then that is to say, isn't one of the remaining two paths...

"Hmm... Conan responded, but was too tired to finish nodding. "That's too bad...

"What do you mean?" Mitsuhiko prostration-In the process of dragging Motota just now, Conan grabbed Motota's two feet, while Mitsuhiko and Ayumi grabbed Conan's right foot and pulled it up together.

"For the red then the cinnabar is pervasive... Conan explained. "If you go into the red road, you'll be hit by cinnabar."

"Cinnabar?"

"Cinnabar, the scientific name is mercury sulfide," Conan explained. "It is a common alchemy material in ancient times in the Far East, which can refine mercury."

"As for the materials for alchemy, there shouldn't be any problems, right?" Yuan Tai scratched his head. "Even if mercury can be refined, the cinnabar used as a raw material will not be too toxic, right?"

"Cinnabar itself is certainly not the main problem," Conan denied. "But the problem is that in the pit, there is a problem with the reason for producing mercury from cinnabar!"

"Huh?"

"In mining, the gold ore is often soaked with mercury and the amalgam is obtained through a displacement reaction... In this process, a large amount of highly toxic mercury vapor is produced. ”

"Could it be..." Ayumi guessed.

"yes," Conan concluded. "If you go wrong, you will walk into a road full of highly toxic mercury vapor, and you will not even have a chance to go back...

———————————— the dividing line of the author

The Japanese literal translation of the prompt (If you think that the katakana maze in this chapter is not to your taste, then say it in the book review area, if it is more than the 10th floor, I will write a single chapter, throw the Chinese maze that meets everyone's taste, and replace the katakana maze.) Similarly, my previous inference about the interstep is the Chinese model, and if you want to see the inference of the Japanese model, you can also say it in the book review area, and the standard is also on the 10th floor)

The sun is shining, the sunset is shining, the place where the sun sets.

If you chase a mouse, choose the middle and take it, how fun.

Correct, according to the horse

Near the spirit monkey, snake or sheep, appear in front of you

The dragon of rarity, the body of water for a long time

That is, according to the Beidou side, guide me on the right path

From the green out, standing in the yellow

If it is black, it will fall forever

For the red then cinnabar pervasive

Only white can pass, this treasure is right

It is comparable to gold, white rice, and a stone