Although Liu Long said that it was easy to drag back to Shenlong Island, it was actually very troublesome.

Excluding the ultra-long distance between the two places, it is definitely a big project to drag this big guy back without being exposed.

Because the stealth submarine could not tow this unknown submarine at all, it had to let the mechanical octopus ant move this big guy back, and because of the problem of mechanical octopus energy replenishment, there must be a stealth submarine for its energy supply, so the original five stealth submarines "lost" one in this way.

Looking at the unknown submarine in the distance, Liu Long thoughtfully asked one by one, "Is it the right choice to transport him to Shenlong Island?"

"Why do you ask? One by one, he was caught off guard by Liu Long's sudden emotion, so he asked Liu Long suspiciously.

"If this unknown submarine is really a product of an alien civilization and has a virus in it, I don't want to turn the newly built Shenlong Island into a purgatory on earth. ”

I have to say that Liu Long's concerns are correct, after all, civilizations are different, and at the moment of opening the hatch, no one knows what accidents will happen.

"Young master, you are too worried, we can build a confined space, and then explore this unknown submarine after being fully armed, if it is really like what you said, there is an unknown virus in it, as long as it does not leave that space, then it will not cause any harm to Shenlong Island, not to mention that there is Liu Sheng, a genuine alien expert, even if there is a virus, it will not be able to make any big waves." ”

explained to Liu Long one by one, after all, human beings are always afraid of unknown and dangerous things, which can be said to be nature.

"Forget it, there must be a road before the car reaches the mountain, so let's continue to explore this area. Liu Long seemed to have figured it out, and then said to them one by one.

One by one, he was ordered to explore the big crabs that were originally on standby, so the big crabs that were reactivated started another round of exploration.

Strange to say, just after the unknown submarine left for a while, this lifeless place was miraculously patronized by fish, as if the things that the fish were afraid of had disappeared, and it was not difficult to find that the unknown submarine that was being dragged back to Shenlong Island must be extraordinary.

The big crab was slowly exploring in front, the stealth submarine was slowly moving forward behind, and Liu Long in the submarine watched the exploration of the big crab for a while, and after finding nothing special, he went to play chess with Zhou Gong.

I don't know how long it took, but when Liu Long killed Zhou Gong in his dream, he pulled him back to reality one by one.

"What's wrong. Liu Long, who was in a daze, was suddenly woken up, although he was not as protective as others, but it was not difficult to see that his face was not very beautiful at the moment, after all, it was not a beautiful thing to be woken up from his sleep.

"Young master, look. ”

Although he saw that Liu Long's face was not beautiful one by one, he was sure that as long as Liu Long saw the outside world through the screen, he would not be held accountable for disturbing the sweet dream.

It turns out that the bottom of the sea at this moment is no longer a barren thing, but a large number of buildings, yes, yes, yes, it is a large number of buildings, and what is even more amazing is that the top of these buildings seems to be covered by something, so that the buildings below are perfectly separated from the seawater.

"One by one, where are we. Seeing such a strange picture, Liu Long was stunned.

"Bermuda's Devil's Triangle. One by one answered truthfully.

"How many meters are there now. Liu Long looked down at the entire undersea city like a creator through the big crab standing on the protective shield, and then asked one by one.

"Six thousand six hundred and sixty-six meters. One by one, they answered an accurate number.

After hearing Yiyi's answers, Liu Long couldn't help but take a deep breath of cold air, because at this depth, the protective shield actually protected the building below from the seawater without pressure, which is simply a fantasy for today's technology, after all, 600 atmospheres is not something that ordinary materials can withstand.

"Let's see if there's a way to enter this underground world. Liu Long looked at this empty underwater city and said to them one by one.

"I have just asked the big crab to look for it, but no abnormality has been found, that is to say, until now, we have not found an entrance that can enter it, of course, there is another important reason, that is, the atmospheric pressure here is too strong, and many of our equipment cannot be used normally, if it was at a depth of three hundred meters where the unknown submarine was found, we may have found the entrance a long time ago." Explain to Liu Long one by one.

"Then let the big crab search inch by inch, since it is a city, how can there be no entrance. Liu Long glanced at this city the size of an ordinary county town and said it one by one.

Liu Long's orders were all carried out unconditionally, and fortunately, the big crab could sneak at this depth without any pressure, otherwise it would be impossible to find the entrance.

The large crab descends from the shield to the bottom of the sea, and then tries to enter the lifeless city from the bottom of the sea.

However, the ideal is very beautiful, but the reality is very skinny, because after the big crab used the laser to dig down the seabed for more than ten meters, the protective cover has not disappeared, although it feels incredible, but Liu Long still ordered the big crab to continue digging, but the result has not changed anything, and there must be a protective shield where it is dug.

Just when Liu Long was about to give up this way, he saw the clue one by one.

"Young master, have you noticed that this protective shield looks like it is alive, as long as the big crab digs one meter under it, the protective shield will grow one meter. ”

"Growth?"

"Yes, maybe we are all wrong, this shield is not physical protection, but energy protection. One by one, he boldly said what he thought.

"Energy protection?"

After all, the energy shield has only been seen in movies, and it is impossible to achieve it in reality, but now it has not only been realized, but it is still at the bottom of the sea of more than 6,000 meters, so it is strange that Liu Long is not surprised.

"Yes. One by one replied in the affirmative.

"In that case, you can't enter the city at all. Liu Long said in disappointment.

"If I'm not mistaken, in order to enter this underwater city, you must have a key that matches the energy shield. Although this is a one-on-one speculation, it seems to be the most plausible explanation at the moment.