Stay away from Conan.

"Therefore, when diving underwater, the oxygen in the oxygen tanks you carry is the only source of oxygen you can rely on. If you don't pay attention to the remaining oxygen during the dive, and you may not be able to float for a while The depth out of the water, this is an extremely dangerous situation!"

Mr. Xiao Bin asked so seriously, and pointed to the pile of oxygen tanks prepared on board, and added:
"You must know that at this time, no matter how many oxygen tanks I have spared on board, I will not be able to rescue you in time!"

In this regard, listening to Mr. Xiaohama's narration, mainly among Shizu Junya and the other three tourists who were listening to the lecture, Shizu Junya didn't respond. It seemed that these were the most basic attempts and did not need to be explained. Among the other three tourists, one of them had some thoughts about Mr. Xiaobin's remarks, and couldn't help asking:
"But... at that time, you can also use this to ask for air from your diving buddies, right?"

Holding a breathing tube connected to an oxygen tank in his hand, the tourist asked the question.

"That's right."

And listening to this tourist's words, the other two tourists around him also nodded one after another, as if they felt that what he said made sense.

But hearing their conversation, Hattori Heiji couldn't help shaking his head helplessly, as if he felt too naive about their thoughts——

"Using a breathing tube, it is indeed possible to lend air to a person who is deprived of oxygen."

In this regard, Mr. Xiaobin slightly closed his eyes, sighed and said this, as if affirming that their thinking was reasonable, but then he explained their thinking in more depth:
"However, please think about it carefully, the oxygen tank that each diver can carry at a time is only one person's amount of oxygen, and the partner who dives with you will also consume oxygen!

"So, if you want to borrow oxygen from your partner because you don't have enough oxygen, the partner who dived with you may not necessarily have better oxygen than you.

"Moreover, when there is a lack of oxygen in the water, divers or divers usually panic. If you give your own oxygen to the other party at this time, it is possible that the other party will absorb your oxygen all at once because of nervousness——

"After all, when people panic, their breathing becomes very flustered!"

Sternly, Mr. Xiaobin's tone became extremely serious, and he disagreed with the idea of ​​borrowing oxygen from his companion when he was hypoxic underwater, and said:
"Therefore, if you think that your diving buddy can always borrow this from you, you are very wrong."

Holding the breathing tube on the oxygen tank and showing it, Mr. Xiaohama continued:

"If you really encountered such an emergency situation, would you give the other party the little oxygen you have left regardless of your own life? Therefore, your own oxygen should be well controlled and managed by yourself. This is the most important point! Do you understand? !"

In this way, after listening to Mr. Xiaobin's detailed explanation, the three tourists finally nodded embarrassingly, and then realized that their thoughts just now were too naive.

So, Mr. Xiaobin continued:

"Since this is the case, it seems that you are all beginners in diving. Don't dive too deep this time. Once you feel uncomfortable, come back to the boat quickly. Don't force it!"

In this regard, the three tourists present had no choice but to nod in agreement——

"Well, well said."

Listening to Mr. Obama's explanation to the three tourists, Hattori Heiji couldn't help but nodded, and said with some approval——

"Hey! Heiji, what are you doing? The village chief and the others are waiting to sail!"

But at this time, it seemed that he had been watching for a long time on the pier beside the boat. After Mr. Xiaohama roughly explained the main points of diving, Toyama and Ye had already boarded the boat and headed towards Hattori Heiji who had not yet boarded the boat.

Therefore, Hattori Heiji hastily responded:
"Ah, that's it. Come right now!"

Saying that, Hattori Heiji waved his hands towards Takato and the others, and said with some pride:
"Then I'll go first. This time I may solve the puzzle before you!"

"Having self-confidence is a good thing, but this kind of thing is not necessarily!"

Seeing Hattori Heiji's confident expression, Koshimizu Nanatsuki smiled unconvinced, and at the same time looked at Takato beside him, and said to him:

"You say so, Mr. Wise?"

"Um……"

In this regard, in the face of such a situation, to be honest, Gao Yuan also understands that being able to go directly underwater and see the so-called underwater relics will be of great help to this investigation, so he who cannot dive may really have no way to compare Hattori Heiji found clues faster, so Takato didn't make a clear statement, but just echoed slightly.

Immediately, when Gao Yuan saw that the village chief on the boat was pulling up the anchor and preparing to set sail, thinking about his purpose, Gao Yuan walked up to the village chief and asked the village chief:
"By the way, Mr. Village Chief. I remember you said that there is a 'Giant Rock' in the east, west, and south of this island, so except for the 'Giant Rock' on the east side of this side, the 'Giant Rock' on the west and south sides Under the waters where the rock is located, are there any relics?"

Somewhat concerned, Gao Yuan asked this question——

After all, according to the legend mentioned by the village chief yesterday, it is said that the "three giants" on the island guard the treasure of the ruins, and the "giant rock" called "giant" in the legend has three giants near the island. So, how many ruins are there under the sea?

As far as I can tell from the conversation I had with Hattori Heiji last night, the area where the so-called underwater ruins are located on the island is right in the area where they are going to dive and check, and it happens to be on the east side of the sea. near the water in the area where Giant's Rock is located.

In other words, it is only known that there are suspected undersea relics under the waters where the "Giant Rock" is located on the east side.

That being the case, what is the situation below the waters where the two "Giant Rocks" on the west and south sides mentioned in the legend are located?

If the so-called underwater ruins are really related to the "Giant Rock" mentioned in the legend and the waters around the island, then logically speaking, the waters near the "Giant Rock" on the west and south sides, There should also be suspected underwater ruins.

However, as far as I know after I landed on the island, the area that seems to have underwater remains only exists under the waters on the east side where Hattori Heiji and the others are going to dive. The west and south sides of the island were mentioned by the village chief yesterday. Before the legend, I didn't even know that there were similar rocks that were very high above the water in those two seas.

So, after thinking about it, Gao Yuan decided to ask the village chief to verify his doubts.

As for this, after listening to Gao Yuan's inquiry, the village head replied with certainty:
"No. The underwater ruins here only exist under the waters on the east side that we are going to sail to now. There is nothing strange in the waters around the 'Giant Rock' on the west and south sides."

"Is that so..."

Hearing the village head's affirmative reply, Gao Yuan couldn't help but nodded, so he didn't continue to ask any more questions. After telling the village head to be careful when sailing, he turned and left the pier, heading towards the west side of the island go.

In response to this, Yue Shui Nanatsuki and Xiao Ai naturally followed Gao Yuan's pace——

"Mr. Wise, what do you think about the question you asked the village chief just now?"

And hearing Gao Yuan's inquiry just now, while walking on the road, Koshimizu Nanatsuki couldn't help asking Gao Yuan curiously.

Seeing this, Gao Yuan shook his head, and just said:

"I don't know if it will have any impact... In short, let's talk about the situation of the three 'Giant Rocks' first. After all, I still can't understand the point of 'three giants united into one' mentioned in the legend. What is there?" significance."

Hearing this, Koshimizu Nanatsuki also recalled what he heard yesterday, the legend about the underwater ruins and "Giant Rock" mentioned by the village chief, and nodded thoughtfully. Just follow Gao Yuan and continue walking.

On the other hand, Xiao Ai, looking at Gao Yuan and Yue Shui Nanatsuki, was simply chatting about the content related to the incident, and was silent throughout the whole process, just walking beside Gao Yuan...

……

On the other side, after taking the village chief's boat out to sea, it didn't take long for everyone to arrive near the waters where the underwater ruins were located.

Here, after the village chief docked the boat on the sea, everyone in diving suits got on board and began to prepare to dive into the water.

Among them, Hattori Heiji, Toyama and Ye are different from the other four, they are not inexperienced beginners, and the purpose of this dive is to get closer to the underwater ruins, so the two also Without waiting for the other four beginners including Junya Tokitsu, after arriving at the designated place, the two took the lead and started diving underwater together.

In this regard, since he had seen the diving ability of the two people yesterday, Mr. Xiaobin did not give them any more instructions today. He just told them to pay more attention to safety, and Mr. Xiaobin finally went to the rest of the people who were about to go into the water. Emphasize some precautions, let Hattori Heiji and Yuanshan Kazuha go to the bottom of the sea first——

“No matter how many times I watch it, it’s always spectacular!”

And soon, after Hattori Heiji and Toyama Kazuha dived into the water, the wide sea area did not hinder the process of the two of them diving, and the two approached the area that was roughly made of rocks. composed of submarine monuments.

Seeing this, Hattori Heiji still felt a little shocked when he just looked at the area that seemed to be surrounded by huge rocks from a distance——

"Is it really possible that such a structure is man-made?"

With such doubts, Hattori Heiji gestured towards Yuanshan and Ye, expressing that he would go further to the undersea ruins to have a look.

Yuan Shan and Ye nodded in response to such a gesture, and if there was no objection, the two continued to dive down.

After bypassing a piece of submarine stone reef, the underwater sunlight began to be somewhat covered by this piece of reef, so in order to make the line of sight clearer, Hattori Heiji and Toyama Kazuha opened the diving suit worn above the head Searchlights, all the way down a submarine slope, the two will soon approach the edge of the suspected submarine ruins on the bottom of the waters.

However, before the two of them were completely close to the seabed ruins, Hattori Heiji seemed to have noticed something moving keenly. He turned his head and saw that it was also descending the slope of the seabed. He and himself rolled down to the place where Toyama and Ye were——

"Ah! What is that!"

Suddenly, when he encountered such a large rock rolling towards him on the bottom of the sea, Hattori Heiji was startled, and wanted to pull Toyama and Ye who hadn't noticed the situation behind him to avoid it.

However, the underwater action is not like that on land. When the water surface has dived to a certain depth, the obvious water pressure directly affects the actions of Hattori Heiji, making his actions seem to be slowed down a lot. Yuan Shan and Ye's hands were touched, but at this moment, the large rock that rolled down also hit the two of them.

For a moment, the two people who were submerged in the water seemed to be pushed down by the rolling stones. After a while, the two people completely touched the stone wall of the seabed ruins that was close at hand.

But it was also because the stone wall blocked the way behind that the two of them came to a halt——

"Okay, it hurts!"

However, when Hattori Heiji reacted from the encounter just now almost instantly, Toyama and Ye could not help but cry out in pain underwater——

I saw that she almost didn't even bite the breathing tube in her mouth, and her mouth kept bubbling rapidly, wanting to howl, and the culprit of all this, the falling stone, was actually at this moment It pressed on Yuan Shanhe Ye's feet, making her unable to move.

"He Ye!"

Suddenly, seeing Toyama and Ye in distress, Hattori Heiji also wanted to shout anxiously, but due to the need to bite the snorkel to breathe underwater, Hattori Heiji could only try his best to make it barely audible. clear voice--

"Are you OK!"

Saying that, Hattori Heiji hurriedly thought of a way to get himself a firm foothold on the bottom of the sea, and then exerted all his strength, preparing to move the stone that was pressing down on Kazuha's feet away from Kazuha's feet——

"No, I'm caught!"

It's just that Hattori Heiji was unable to move the stone even if he tried his best underwater.

And anxious, Hattori Heiji saw that there was nothing he could do with the force, so he carefully observed Kazuha's injury, and realized that after the stone collided with the stone wall of the underwater ruins, due to the irregular shape of the two surfaces, it caused a collision. There was an irregular gap, and He Ye's feet were caught by this small gap.

However, this gap is extremely small, if you don't move the stone, there is no way to get He Ye out of danger——

"What should I do?"

In a hurry, Hattori Heiji couldn't help breathing in oxygen with his heart rate increasing.

But immediately, Hattori Heiji remembered what Mr. Kohama said when he was on the pier before, if he was too flustered at this time, the oxygen consumption would be—

"He Ye!"

For a moment, Hattori Heiji, who tried his best to calm himself down, looked at Toyama Kazuha, who was panicking because he was pinned down by a stone.

Then, Hattori Heiji noticed that the oxygen content displayed on the barometer on Kazuha's oxygen bottle was almost gone!

This sudden encounter caused Yuan Shan and Ye to breathe heavily due to panic from just now, and the oxygen in her oxygen tank was almost running out——

"hateful!"

Feeling that his heartbeat was also gradually accelerating, Hattori Heiji felt an unprecedented sense of urgency...