"Did you just see it? It's not magic, is it?" The shock on Guan Zixuan's face had not yet faded.

"No wonder even Sister Lan is scared, it's really not easy!" I looked at the place where the man disappeared, and I still couldn't understand how he did it.

"This man...... I'm afraid it's going to be invisible?" said the old black.

"Is it a special function?" Uncle Wang asked.

"Maybe it's some kind of cutting-edge science and technology. Old Black touched his chin.

"Anyway, we need to be careful. I reminded from the sidelines.

After looking at the place where the man disappeared for a while, we didn't find anything useful, so we decided to go back first, and talk about the rest later, we had to go to the polar regions, but we had to be careful.

After that we went back to the hotel, got a little bit of preparation, and set off the next day.

This polar expedition was specially contacted by the headquarters for us, so we were given preferential treatment.

The days on the boat were very boring, we had to play cards in the cabin every day in thick cotton jackets, and sometimes the wind was not too strong, and we would go out fishing.

After many days of this, we finally managed to reach the polar regions, and the boat walked on the polar ice for a long time before coming to a stop under a huge glacier.

We got off the boat and moved out of our luggage. From here, we're on foot.

Old Black communicated with the people on the boat in a foreign language, and finally walked over with a shake of his head.

"What's wrong, old black?" I asked.

"They didn't go in with us, saying that they were instructed by the people in the headquarters, and they could only wait for us on the periphery, and if we didn't come back in fifteen days, they would leave on their own accord and wouldn't waste time. ”

Old Black shook his head.

"They're not going?" I paused, "and if they don't, we'll probably have to be more careful." ”

"Hmm. They all nodded.

Hei took out the map and observed the terrain around me, while I checked my luggage.

"After climbing over this mountain and walking a little further in, you should find an ice cave. Lao Hei said.

"Then let's go, this is my mission, I can't hide from it. I smiled.

In the afternoon, we traveled in one direction for a long time, climbed over a snowy mountain, and encountered a small avalanche on the way, but fortunately we had learned about polar survival, so we were not injured.

"Five kilometres further on, we'll find the ice cave. "Old Black is holding a compass and guiding the way.

This ice cave is said to be the only way to the polar center, and you can only get to the polar center if you find it.

"It's getting late, so let's camp here first, and then we'll continue our journey tomorrow. Lao Hei said.

I nodded, agreeing with his suggestion.

That night, we sensed movement outside the camp and walked out en masse, but we didn't seem to notice anything.

"Could it be a snow wolf?" I asked the old black.

"I don't know, but we'd better be careful. Old Hei frowned and returned to the tent.

The next day, we woke up early in the morning.

After about two hours of walking in the direction of yesterday, we managed to find the ice cave.

This ice cave is not as big as we thought, it is about two meters in diameter and is diagonally downward.

"This is the entrance to the Polar Center?" Uncle Wang circled around the ice cave a few times, his face puzzled.

"This should be the place, let's go down. I said.

Next, we tied the safety ropes separately and planned to go into the hole to find out.

The road is still easy to have at first, except for the occasional steep slope, but it's not a big problem.

Further down there it was a bit painful because we had to wear wetsuits to get through, and it was all icy and cold.

In order not to let the luggage get wet, we deliberately chose a very thick soft plastic, which we dragged when we swam in the water.

After a long waterway, we finally reached the shore.

"I'm cold, this is a devilish place. Uncle Wang shuddered as he spoke.

"It's too cold!" Guan Zixuan also shivered.

"Let's get dressed, don't catch a cold. "I set up a tent for Guan Zixuan to change her clothes, and we changed all our clothes outside.

"Let's go, let's move on. ”

We've come a long way.

Originally, it was very dark at the beginning of the place where I came in, because the ice above was very thick. But as we walked along the waterway for a while, we noticed that the light gradually got better.

"The ice here seems to be very transparent. Lao Hei said lightly.

"Indeed, this place is brighter than the rest. Uncle Wang looked up and said.

The ice above us has changed from blue to transparent, which is why it has such good light transmission, which also proves that the ice in this place is not very old and not very dense.

"Ahh

We were attracted by her screams and rushed to her side.

Following her gaze, we saw a large insect, about two meters long, like a large hairy centipede, and its head was a bit like a fire phosphorus insect.

"What is this?" exclaimed Uncle Wang.

But after closer inspection, I seem to think of this bug.

"It's a giant sea scale insect. Lao Hei said.

That's the name, Wen Feng said it in class.

But I don't think the giant sea scale worm will come ashore, but this one seems to have been lying here for a long time.

"Possibly...... It was frozen in the glacier, but now the glacier has thawed it. Old Black continued.

I nodded, and that was probably the most plausible explanation at the moment.

"It doesn't seem to be aggressive, but let's get out of the way, don't mess with it, maybe it's still alive. I said.

Rounding the seascales, we continued to walk in for a while longer, until we reached the end of the road.

At the end of the ice, we realized that at the end of this ice cave was a huge cliff, and there were several ice caves opposite us, which looked like there were a few more moth-eaten holes in the hollow bamboo tube.

At the top of the cliff is not a blue sky, but a layer of ice, and at the bottom is a huge black building, which is the same building that Wen Feng showed us in the photo.

"Let's go down! Uncle Wang, untie the rope from our bodies, take out the mountaineering rope in our bag, there is still a distance of more than 20 meters to the bottom, and we have to slide down with the rope. I said to Uncle Wang.

In order not to get separated, we tied each other together with ropes when we entered the hole, and the length of the rope between the two of us was one meter, and then we had to untie the rope.

Uncle Wang tied the rope to a huge icicle and lowered the rope.

"I'll go first, and you'll follow. Lao Hei said.

"Okay. "We readily agreed.

Lao Hei is the strongest in terms of comprehensive strength here, and it is most suitable for him to take the lead.

After the old black was over, I followed.

When I got to the bottom of the cliff, I realized that this building was much larger than what I had just seen, no wonder Wen Feng said that this thing was ten kilometers long, I am afraid that there really is.

I saw that one side of the building below was deeply embedded in the ice, and there was no end in sight on the other side.

Then Uncle Wang and Guan Zixuan slid down one after another.

"What are we going to do next?" asked the old black, looking at me.

I looked at my backpack and found a letter from it, which was the next letter that Sister Lan left me.

"Next, let's listen to Sister Lan. I smiled.

With apprehension, we opened Sister Lan's letter.

"First of all, this place is the center of the southern polar region and the switch of the earth. "The first sentence of the letter was not the familiar greeting language I was familiar with, but it was written directly.

"Xiaojie, now you are short of time, and you need to complete the task quickly. Although the problem is not visible on the surface of the earth, the interior is already under extreme pressure, and I am afraid it will not last long. ”

In the letter, Sister Lan explained the whole process of this time and all the solutions.

Sister Lan explained several articles, and I summarized them.

The earth has a geomagnetic field, which is called a geomagnetic field.

There is another planet in the solar system that also has a global magnetic field, and that is Mercury.

Sister Lan said that the magnetic field strength of the geomagnetic field was originally about the same as that of Mercury, but now the magnetic field strength of Mercury is less than one percent of that of the Earth.

All of this is because of the building under our feet, which strengthens the geomagnetic field, and it is also because of its failure that the earth has cracks.

And the reason for its failure was that Sister Lan took down four of the important parts, that is, four copper capsules.