The third spiral line explores the long-wave signals emitted by the gourd-shaped islands in the distance to the bottom of the sea, and strengthens them to make the transmission of aura more convenient.

In this way, this undersea volcano and the special mist on the twin volcanic islands dozens of kilometers away formed a special spirit gathering array, gathering the spiritual energy here and teleporting it to the distant island. Compared with the ordinary Spirit Gathering Array, this formation is much more complicated, and its biggest feature is that it is hidden, if you don't have a spiritual realm, even if you have olfactory imaging, you can't detect the existence of this Spirit Gathering Formation.

Tian Xu was very curious, who had built this Spirit Gathering Formation, and what was the purpose of building this formation? There were many questions that he couldn't figure out.

The function of this formation does not seem to be complicated, which is to gather the aura in the Sea of Okhotsk, and then transmit the gathered aura to the twin volcanic islands through the mist.

But what is the purpose of these spiritual energy teleported to the island? If it is used to nourish the plants and grow elixirs at that time, even he himself does not believe it. The types of elixir plants on the volcanic island are too ordinary, although they are relatively precious because they are rarely found in the secular world, but the actual medicinal effect is not outstanding, and there are many elixirs that can replace them. He estimated that it was just an accident that those plants obtained the aura provided by the formation and evolved into an elixir.

He had paid special attention to the fact that only a small fraction of the aura transmitted to the island was absorbed by the plants, and most of it was not absorbed, but was dissipated at that time. The aura that escaped no longer had a specific direction, and it spread out in all directions of the island, disappearing into the Sea of Okhotsk and the Pacific Ocean on the other side.

"Maybe someone or a formation received aura from here in the first place, but now it's gone?" he secretly guessed, "I don't know who set up the formation, and I don't know why this formation exists, it's so strange." Thinking to himself, his mouth unconsciously spoke.

Ziyan heard Tian Xu's words beside her, and she felt a little clueless, she followed Tian Xu all the way, and she didn't know about this spirit gathering formation. She didn't have a spiritual realm like Tian Xu, so she couldn't detect the existence of this formation at all.

"Is there any formation here?" she asked curiously.

Tian Xu told her about the formation, and asked her to help think about what was possible here, but Ziyan's understanding of this formation came completely from Tian Xu's description, and he couldn't say any useful conjectures.

The materials used to construct this formation, except for the mist on the gourd-shaped twin volcanic islands, were all ordinary materials, not special spiritual materials, which was very clever, at least he couldn't understand how this formation was constructed at the moment, let alone imitate it. He believed that the so-called array mages in the cultivation world now would definitely not be able to figure it out.

All the array materials are made of local materials, using ordinary natural materials, and there are no traces of artificial processing. From this point of view, if this formation is naturally generated because of the magic of nature, there is no problem. But in the face of such an exquisite formation, he still rebelled and believed that it was artificially constructed, otherwise this coincidence was really unimaginable.

Or was there someone or something that came here regularly to collect Reiki?

If this is the case, then there are two possibilities. One is the power to construct this formation, and the construction of this formation is for the use of one's own nephews or subordinate spiritual weapons and spirit beasts, and the other is why the formation provides energy.

He guessed that the latter was more likely.

He thought of the terrain here, and found that the possibility of this formation being used to maintain the operation of a particular formation was much greater.

This is the island chain of the Kuril Islands, separating the Sea of Okhotsk, which is close to the mainland, from the vast Pacific Ocean outside. This formation draws spiritual energy from the Sea of Okhotsk and transports it to the island chain facing the Pacific Ocean. If the island chain of the Kuril Islands is a defensive formation facing the Pacific Ocean, then this Spirit Gathering Formation may be the energy source of this defensive formation. In this way, the Spirit Gathering Array is inside the defensive formation and can prevent attacks from the Pacific side.

The more I thought about it, the more I felt that this speculation was reasonable, so under what circumstances was this huge defensive formation thousands of kilometers long constructed? Who built it, and for whose attack was it defended?

Tian Xu guessed that this may have been built by a certain great power in ancient times, in order to defend against the attack of powerful demonic beasts or demonic cultivators from the deep sea of the Pacific Ocean, it should be the product of the outbreak of ancient demonic beasts.

He thought that in this northwest Pacific region, there are many island chains similar to formations, such as the four islands of Japan, like the Kuril Islands, like the Aleutian Islands in the north, as well as the Hawaiian Islands in the middle of the Pacific Ocean, and the Okinawa Islands in southern Japan, etc., this series of island chains, the explanation of the secular scientific community is the product of volcanic activity brought about by the movement of the continental plate, but judging from this gathering spirit formation, wouldn't it be a defensive formation facing the ocean?

Around the Pacific Ocean, there is a Pacific Rim volcanic earthquake belt, where most of the earth's volcanoes and super earthquakes are concentrated.

Ever since he entered the ocean, the creatures in the ocean had repeatedly broken through his perception of the cultivation realm. From the East China Sea to the Sea of Japan, and then to the current Sea of Okhotsk, the level of the demonic beasts and spirit beasts he encountered was generally much higher than that on land, and the mirage he had never seen before made him even more unable to face it.

In the land cultivation realm, he didn't know what realm was the most powerful, at least the earth immortals he had been in contact with so far couldn't compare to this mirage at all.

He was sure that the mirage should be a spirit beast, not a magical beast, and since this mirage was in the deep sea of the Sea of Japan, would there be a similar powerful spirit beast in the Sea of Okhotsk? If he had arranged this defensive formation in the first place, since he had sent a powerful mirage to sit in the Sea of Japan, of course, he would also send a master of equal or stronger strength to sit in a larger area and have a longer line of contact with the Pacific Ocean. The more fragile Sea of Okhotsk, and the even greater Bering Sea, separated from the Pacific Ocean by the Aleutian Islands, certainly cannot be left behind. Then he should be even more cautious in his future itinerary, and he should not despise any spirit beasts and demonic beasts in the sea.

Tian Xu told Ziyan his guess. Ziyan didn't have a particularly obvious understanding of this, but when she saw the map of the North Pacific Ocean in the tablet, she immediately admired Tian Xu's brain-opening thoughts: "It seems to be the case," she switched the map in the tablet to the Atlantic Ocean and the Indian Ocean in turn, and there didn't seem to be a similar structure around it, "You see, only around the Pacific Ocean there are such island chains and so many volcanoes." The Arctic Ocean doesn't seem to have ...... either."

When it came to the Arctic Ocean, she paused with some hesitation. The situation in the Arctic Ocean is not ordinary.

Among the four oceans, the Arctic Ocean is much smaller than the other three, surrounded by the Eurasian continent and the North American continent in the North Pole, and is covered by thick ice and snow all year round, basically revealing the original appearance of the ocean.

But modern secular technology has long since mapped its precise shape and outline and seabed topography, and it can be seen on a map with clear images. The shape of the Arctic Ocean is approximately rectangular, and the Eurasian and North American continents are separated by only a narrow Bering Strait, which can be considered to be closed by continents.

At the northern tip of the North American continent is the vast territory of Canada, which is made up of a large number of islands, all of which are roughly larger than the Bering Strait. Greenland, the world's largest island, is located on a wide opening between the Arctic Ocean and the Atlantic Ocean, almost half of which is narrowed, and it is its existence that makes the Atlantic Ocean form the famous S-shape, otherwise its northern end is a huge opening, which cannot be clearly distinguished from the Arctic Ocean.

At the northernmost point of the S-shaped Atlantic Ocean in the Arctic Ocean, Svalbard, Franz Josef and North-Zemlya form a sparse chain of islands that separates the Arctic Ocean from the Atlantic Ocean. If this island chain is also seen as a defensive formation, then it can help defend the Arctic Ocean against threats from the Atlantic. Or to help the Atlantic Ocean defend itself against attacks from the Arctic Ocean. The exact situation is not clear for a while.

This island chain divides the Arctic Ocean into two parts, separating the Greenland, Norwegian, Barents, and Kara Seas, bringing the remaining part of the Arctic Ocean closer to a circle, and its shape before it was separated is closer to the shape of a fist.

"Could it be that this Arctic Ocean was smashed out by a huge fist?" Tian Xu shook his head and threw away my unreliable thoughts.

The situation in the Pacific Ocean is relatively clear, and it is easy to see that the series of island chains should be protected against threats from the depths of the ocean. But the island chain between the Arctic Ocean and the Atlantic Ocean does not allow the direction of its defense to be seen on the map. After some research, the two finally decided to modify the original route, no longer taking the Pacific coast of North America, but crossing the Bering Strait into the Arctic Ocean, then crossing the entire Arctic Ocean to inspect the island chain between the Atlantic Ocean and the Arctic Ocean, and finally going straight from the North Atlantic to Bermuda to inspect the situation of the fairy road.