Qin Yunfei piloted the submarine and sailed towards the core area of the East Island. There were no cruising whistles along the way.

"I remember on the way to the core of the East Island, there were a lot of dark whistles. Why don't you even have a ghost shadow on this road? ”

Long Qi was very curious, after all, she had been here countless times, there were patrolling dolphin cavalry on it, and there were cruising fish-man secret posts underwater, if she passed rashly, she would definitely be discovered.

But on the way to Yunfei, let alone the secret whistle, there is not even a fish.

However, just when she was surprised, Qin Yunfei smiled.

"These people who are dark sentinels are usually a group of soldiers with average cultivation and good eyes. And these people, how many meters can you expect them to be able to go underwater?" Qin Yunfei looked at Long Qi with interest.

"Well, what do you mean by that? This fish-man clan is an expert in diving, and they can dive fifty or sixty feet, to say the least. ”

According to the pressure-bearing capacity of people in this world, the average soul master can dive into the water for three or five meters, and the soul master can dive into the water for twenty meters, while the soul sect can dive for seventy or eighty meters, and when the soul emperor arrives, it is estimated that he can reach one hundred and seventy or eighty meters.

And this fish man clan can enter the water for fifty or sixty zhang, that is, about two hundred meters, and move freely, and its cultivation must be below the soul sect.

This is also the advantage that they bring by surviving underwater all their lives.

However, such an advantage has become a big joke for Qin Yunfei, a person who relies on technology to fight.

"Actually, you're right, diving fifty or sixty feet, it's really amazing. And to be able to do one mile and one post, it is really hard. But now that we're 200 feet underwater, how can they find us?"

Qin Yunfei calmly explained their current position, and when he heard what Qin Yunfei said, he shocked Long Qi.

"What do you say? Where are we now? Two hundred feet? Isn't that more than a mile?"

"Of course, if my submarine can't dive 200 zhang, then what kind of submarine is it?"

Qin Yunfei smiled calmly, the role of the submarine itself is for detection and raiding, since it is going to the other party's lair to detect, it is naturally necessary to sneak in.

"I don't quite understand how you did it, but if it's less than two hundred feet here, how can we not be crushed to death?"

"Oh, I think you know that the pressure in the depths of the water can be very high. It doesn't seem to be an idiot princess yet. Qin Yunfei was interested in a large number of dragon qi, and showed a playful smile.

Long Qi was very unhappy when he looked at him like this.

"What do you mean, do you think I don't know the essentials of underwater warfare at all?"

Qin Yunfei hurriedly waved his hand, "This is not true, I just sighed, when I was in Xuanfeng City, there were many sons and brothers, who thought that why the dignified Soul Sect could only dive for twenty zhang, so I mistakenly thought that most of the people in this world were physical idiots." It's just that I didn't expect that the seventh princess actually knew the key to underwater pressure. ”

Although Qin Yunfei was explaining, he was also full of emotion.

"Underwater pressure, affected by the depth of the water, leads to the increasing pressure under different waters. The Soul Sect is strong, although he can withstand huge physical damage, but the premise is that he uses the Star Soul skill to strengthen the local body. But underwater is the whole body, all-round pressure pressurization, on the strength of the body, has great requirements. Therefore, no matter how strong you are, as long as your physical strength is not up to standard, then if you want to continue underwater, you can only do it within your own safe range. ”

Qin Yunfei sighed, "Actually, this question is really obvious, no matter who it is, the body is always a physical body, and if you want to resist such a strong water pressure, if you force a temporary sprint, you can still bear it, but if it is for a long time, it is very likely to be crushed to death." And those boys are really idiots, thinking that going into the water is like fighting, which is embarrassing. ”

After Qin Yunfei explained, Long Qi didn't feel any surprise, and even rolled his eyes, expressing impatience.

"You're really funny, and you have to explain this kind of thing so clearly?"

Being despised by Long Qi, Qin Yunfei was also very helpless, he could only smile awkwardly, and then continued to drive his submarine forward.

But as he was walking, he suddenly found that an unknown object was rapidly approaching him.

In order for a submarine to travel safely, it is necessary to have a radar system.

To this end, Qin Yunfei specially designed a sonar radar, which can detect everything within a five-kilometer radius of his vicinity.

In the three hundred kilometers he had been sneaking up before, he hadn't noticed anyone was following him.

But just as he was approaching the core area, he suddenly found that there was an unknown flash on the radar, and it was constantly approaching him.

"What's wrong?" Long Qi saw his strange expression, so he hurriedly asked.

"There's something approaching us, although it's not clear what it is. But looking at the speed, it shouldn't be an ordinary soul emperor. Qin Yunfei explained briefly.

Long Qi was stunned and said, "Where are we now?"

Qin Yunfei said the approximate direction, "It should be twenty miles away from the capital of East Island." ”

"Could it be the Yaksha King? I heard that this guy is the Governor of Coastal Defense of Ryu Island, and he is a Soul Saint-level powerhouse. ”

Long Qi fell into deep thought, she had heard a little about the characters in the core of the East Island.

"Yaksha, is that it?"

Qin Yunfei adjusted his radar search results and used temperature monitoring to show the other party's appearance.

Above it was a green-faced, fanged demon with two pairs of thick arms, a huge three-pronged fishtail, and a huge steel harpoon in his hand.

"That's him! Did he find out? Damn it, why don't you retreat?"

Long Qi hurriedly asked Qin Yunfei to retreat quickly.

But Qin Yunfei smiled, "Retreat, why retreat? There are no signal soldiers behind him, we are in the water, wouldn't it be better to kill him?"

Without waiting for Long Qi to react, Qin Yunfei had already turned the direction of the submarine and began to aim at the enemy.

This Yaksha King was indeed the overlord in the deep sea, but in just one minute, he had already rushed to a position of a hundred meters in front of Qin Yunfei.

And at this time, the huge harpoon in his hand also began to shine with strange brilliance.

Seeing this scene, Qin Yunfei smiled coldly and pressed his shooting button.

"Whoosh!" he shot two steel spears, and they were also covered with long chains, not to kill the other, but to capture the Yaksha and capture him.