"Do you know the name of the island where the real Doom Bank is located?" After a long time, Gu Yan suddenly turned his head to look ahead, and then raised his hand to look at his watch.

Tang Shuxing also looked ahead, shook his head and said, "I don't know." ”

"Blue Island." Gu Yan smiled, "I've only seen the photos, I'd love to see them with my own eyes, I heard that every two hours, as long as it's in October, I don't know why, this island will turn ice blue, very beautiful." ”

As Gu Yan was talking, a cloud of blue suddenly lit up somewhere in front of him, which was very small at first, and then the blue began to spread in all directions, gradually becoming larger, and then a huge ice-blue island appeared in front of the two of them, just a hundred meters away from them.

Tang Shuxing couldn't help but stand up, looking at the ice-blue island in amazement, he couldn't describe the scenery in front of him in words, the starry sky was reflected on the sea, plus the blue island, it was like seeing a huge sapphire floating there in the universe.

"This ......" Tang Shuxing squeezed out a word from his mouth for a long time, but after this word came out, he didn't know what to say.

Gu Yan stood at the end of the raft and nodded, "This is just the beginning, you can watch it." ”

Tang Shuxing stepped forward, and then found that the ice blue of the blue island began to shrink from the edge to the middle, and it didn't take long for it to change back to its original state, a cloud of pitch black, but not long after the blue island went black, the ice blue seemed to have vitality, spreading from the bottom of the island, and then extending from the sea to the various icebergs, and soon several icebergs around it also turned ice blue. Illuminates the surrounding qiē.

"I'll go—" Tang Shuxing stood on the raft and turned his body, looking around, "It's just a fairyland on earth, what's going on?" How to explain it? ”

"I can't explain how it is, but it's only a few days in October that there is such a spectacle, after which there is no more." Gu Yan shook his head, "Actually, the boss is also suspicious that the real Doomsday Bank is located on this island, and it may have a certain close connection with this wonder." However, no information has survived. If it weren't for that Vivien, we wouldn't know about the existence of this place. ”

Tang Shuxing shook his head: "This doesn't make sense, that little kingdom of the Earth Emperor is so close to here, why doesn't he know?" ”

"He knows. But he never mentioned it. Has anyone known before. I don't know, but he certainly does, because he forbade his nationals to Dragon Island. The place north of Helong Island, although it is said that no one will actually go there, because the further north is close to the depths of the Arctic Circle, no one will be stupid enough to travel there to seek death, only a small number of scientific researchers have ever been, it is the coldest place on earth. After Gu Yan finished speaking, he paused and said, "But it seems that the future may not be anymore." ”

Tang Shuxing nodded: "Don't talk nonsense, let's hurry up to the island, I'm full of curiosity about this place now." ”

Gu Yan smiled: "The boss said that as long as you have seen this scene, you will definitely be curious, of course, I am also very curious." ”

The two of them rowed towards the Blue Island, and after landing, the two hid the raft on one side, because if this thing was gone, they would be dead, and they would have to be trapped on this island, even if there was a boat or something hidden somewhere on this island, but it was only unknown, and they needed to think about their own future.

The fact that there is no snow wind on the Blue Island is strange enough, so to speak, almost nothing, as if there is an invisible barrier around it that shields it from the wind, but people or other things can come and go freely.

Tang Shuxing took off his gloves, put his index finger in his mouth, and then took it out, feeling it for a long time, he turned his head to look at Gu Yan and said: "There is no wind, it's just very cold, the two feelings are completely different, it's too weird, I can't tell what this feeling is, I always feel that the air here is just slowly circulating itself on the island, and the air is extremely fresh." ”

"You wait!" Gu Yan took out an instrument from the equipment, inserted it in the snow, then unfolded it, then entered a string of characters and waited, less than a minute later, a column of numbers appeared on the blue display.

"The air quality here is the best according to the previous level, and the humidity is also good, it is an environment that is absolutely suitable for human survival, but I don't know how the ice and snow come from, it's too weird." Gu Yan looked at those numbers, "It stands to reason that at this temperature, the air will not have this kind of humidity, reaching 56%RH, and it is generally best to maintain it between 45%RH and 65%RH, 56% This value is already quite good, it is not easy to calculate the relative humidity of air quality in the Arctic Circle, but in this place, this value is so accurate." ”

Tang Shuxing stared at the machine: "There won't be a problem with this machine, right?" ”

"If you and I have a problem, there will be no problem with this machine." Gu Yan placed the thing there, "This thing can scan the living creatures within a hundred meters of the surrounding area, put it here, it should be a guard post, this is a thing that Chi Chen has researched himself." ”

Tang Shuxing was not interested in this thing at all, and then followed Gu Yan and began to walk towards the center of the island, and after walking for a long time, they could still see the sea in the distance, which showed that this island was not big, at best the size of a football field and a half. The most bizarre thing is that they can see some plants on this island from time to time, and they are iron trees.

Tang Shuxing stopped in front of an iron tree, took a deep breath, and looked at Gu Yan.

Gu Yan also looked at the iron tree and nodded, "Do you think this is true?" In the Arctic, there are evergreen woody plants, and they also belong to the cycad species, this plant only grows in the tropics and subtropics, how can it grow in such a cold place? ”

Tang Shuxing squatted down and played with the leaves of the iron tree with his hand: "It looks like an iron tree, but it doesn't look like it, it's just that we call it an iron tree in China, right?" ”

"My knowledge of plants is almost all theoretical, rote memorization, you know, when I started learning, the world was in collapse, and there was no opportunity for me to practice." Gu Yan stood there and watched.

Tang Shuxing stood up: "Now is a good opportunity, you can start practicing." ”

"I don't have what I need, so I can only cut some leaves and bring them back." Gu Yan said and walked forward, "Let's talk about it when we leave, now we need to find the entrance, according to Vivian's words, the entrance is in a cave in the center of the island, the outside of the cave will be covered with snow, but because of the temperature in the cave, the outer layer of snow will show something like an ice and snow slide." ”

Tang Shuxing looked around, and finally saw a hill in the distance, and then pointed over there and said, "According to your description, there should be only that side." ”

Gu Yan nodded, followed Tang Shuxing over, walked to the bottom of the hill, and sure enough, he saw the scene described by Vivian, there was a slope ice road, the reason why this kind of thing was formed was completely because the temperature in the cave melted the snow on the surface, and the snow turned into ice, thus becoming the current appearance.

"Let's get to work!" When Gu Yan took out his ice axe, Tang Shuxing had already pulled out the Dragon Lin Blade and inserted it to test the depth.

Gu Yan had no choice but to put away the ice axe, and then Tang Shuxing chiseled a hole there that was enough for one person to enter, reached in and probed: "The temperature above zero, it looks warm, I'll go in first, and then you stuff the equipment in." ”

After Tang Shuxing got in, he saw that there was no change in the cave, but the ground had been re-paved, I don't know what material it was, but the effect of temperature transmission was good, as if it was geothermal, the heat rose, the snow on the guide zhì melted, and it slipped down layer by layer, turning into ice.

Tang Shuxing took the equipment handed in by Gu Yan, helped him in, and then put on the equipment on his back and began to walk towards the cave.

The cave was slanted down thirty-five degrees, very large, like the mouth of a giant strange fish, and the most incredible thing was that after walking deeper into the cave for about ten meters, they found that it was a stalactite cave, and the temperature was slightly lower than the doorway.

"What's going on? Is there a stalactite cave in the North Pole? Gu Yan turned on his headlamp and began to move forward slowly, because the ground was too slippery, and he would fall down if he was not careful, Tang Shuxing walked in front and looked at the ground carefully, although the ground was slippery, it was still retrimmed.

"I guess further down, there will be changes." Tang Shuxing continued to walk down, and sure enough, after the stalactite cave of dozens of meters, there was another cave, similar to the cold cave, which contained a lot of ore crystals, refracting the light source of unknown origin, illuminating the entire cave very brightly.

Gu Yan couldn't understand it now, and looked at the cave in front of him in surprise, just shaking his head constantly.

"This cave is not naturally formed, including the road on the ground, it is impossible for some United Nations or a major country to build it in the later period, and I estimate that even Shangdu does not have this kind of technology now." Tang Shuxing looked at a huge crystal closely, there seemed to be something in the crystal, and after the refracted light source gradually decreased, Tang Shuxing saw clearly that it was a small plant, as if it had been deliberately sealed and preserved in some way.

Gu Yan understood the meaning of Tang Shuxing, stepped forward and said in a low voice: "You mean, this was built by ancient humans?" ”

"Yes, that's what I speculated." Tang Shuxing nodded, "Because ancient humans have also experienced a period of mass extinction, they may also be like us, building something like the Doomsday Bank somewhere, preserving all the things they want to leave behind, and the terrain and landforms of each section of this cave are different in each section of the earth, just like simulating different environments in various places on the earth, maybe we can see more strange things if we go on." ”

Gu Yan nodded, followed Tang Shuxing, who had already left, and asked at the same time: "But judging from the age of the ancient humans obtained from the information in my hand, it has been a long time ago, what was the earth's crust like at that time, especially the land we stepped on, no one could come up with accurate patterns and numbers. ”

Tang Shu replied: "Indeed, what the current North Pole looked like at that time, and whether there was such a place was still a question, so the island we are on may be something of another form." (To be continued......)