The host welcomes the guests, and the seven wolves are no longer embarrassed by Haige. They puffed through their noses and wagged their tails behind the man, but the brown wolf still had playful glances in his eyes, and two of them sneaked a glance at Hai Ge through the gap between the man's trouser legs.

"You...... You're Wedel? But how is this possible? Haige stuttered, forgetting that when he met someone for the first time, it was very abrupt to greet people like this.

"Hahaha~" Wedel didn't care about him, and laughed heartily: "What, is there any special standard for doing Wedel?" ”

"Oh, I didn't mean that!" Hai Ge's dark face turned red, and he waved his hand in embarrassment.

Seeing his embarrassment, Wedel felt pity, walked over and patted him on the shoulder with his hand that did not hold a wooden spoon, and said, "Let's go, you must be tired." Come in and sit down, and ignore these careful-eyed animals. ”

Hai Ge Mu Ne nodded, followed Wedel to the room he came from, and when he reached the door, he smelled a strange smell, which was not fragrant or not, sour and sweet, and felt bitter after smelling it for a while, and it was somewhat spicy......

"He won't, he's going to give me something from the pot, right?" Thinking about it like this, Hai Ge's footsteps hesitated a little.

Weddle saw that he was not used to the choking smell and said, "Don't be surprised, I spend a lot of time every day extracting plant fibers from the leaves of the purple apricot tree. It smelled so strong that I took refuge in this remote corner to avoid disturbing the staff of the Global Federation of Science and Technology. I'm sorry to entertain your newcomer in a crude place. But after the Shadow Fantasy trip, you must also know that we don't have much time left, and I have to work hard to break through the difficulties against the clock. ”

"The obstacle he is breaking through must be looking for the kind of material that can build an escape orbit for the earth!" Haige's heart was shocked, not only did she no longer hate the smell, but she also wanted to see how Wedel was refining the plant fibers he was talking about. But there were too many questions along the way, and he couldn't help but ask: "You just said that the Global Science and Technology Federation has moved underground?" So how far is it from the ground? ”

Wedel also seemed to remember something, patted his head and said, "Oh, look, I've forgotten everything in this hurry." I haven't told you about it yet, so let's talk about it briefly. The planet you live in can be roughly divided into three parts structurally: the crust, the mantle, and the core. The location of the underground plant kingdom is the core of the earth. ”

"Well, we're really at the center of the earth!" Hai Ge nodded, and then asked, "But as far as I know, the temperature of the earth's core is very high, maybe higher than the temperature of those volcanoes on the earth's surface when they erupt, how can it be possible to grow a large number of animals and plants?" ”

Wedel shook his head slightly and said, "The distance from the surface of the earth to the center of the earth is more than six thousand kilometers, and the depth that human beings on the earth can reach at present is less than fifteen kilometers. All your geologists know is that the higher the temperature and the higher the pressure the deeper you drill. If you drill to 100 kilometers, the temperature below ground may exceed 1,000 degrees Celsius, and there is no detector that can withstand such high temperatures. Therefore, the inner world is even more mysterious to the earthlings than the universe, and people are always guessing what is 6,000 kilometers underground, but they cannot see it with their own eyes. ”

"But you led the scientists of the earth to see it!" Haige said with emotion.

"Yes, it is because of this that I was able to gain the trust of the experts of the Global Federation of Science and Technology and convince them to work with me to establish the Redeeming Light organization to save the planet." ”

Hai Ge was full of curiosity and asked, "Could it be that there is really no terrible high temperature in the place where it is 6,000 kilometers underground?" When a person enters the center of the earth, will it really melt instantly? ”

"According to past studies by geoscientists, you can think so, but those are just hypotheses, and hypotheses can be confirmed and falsified," he laughed. The warmest place on Earth is concentrated in the mantle. The mantle is about 2,900 kilometers thick, and a large part of it is made up of peridotite. The perilithosphere contains an asthenosphere that contains a large amount of radioactive material, resulting in a very high temperature in the entire mantle, high enough to melt the rocks and become the source of underground magma. This is what gives humans the illusion that the Earth's core should be hotter than the Earth's mantle. ”

"It turns out that for a long time, human beings have gone further and further in the wrong understanding." Hai Ge said.

Of course, it can't be understood that way. The process of scientific cognition is long and arduous, and it must go through countless challenging explorations to achieve the final result. But admittedly, it was also quite an interesting process. Scientists in the Global Federation of Science and Technology now know that from the surface of Gutenberg to the core of the earth, this layer of about 1,600 kilometers is not only free of heat, but also full of water and oxygen. But until we arrive, there is only one form of life in this world occupied by various metal deposits, and that is bacteria. The reason for this is precisely because there is no light here. Although the crystals in the rocks emit all kinds of dazzling brilliance, they cannot help plants to photosynthesize, so it is difficult to form a complete ecosystem. ”

"Then those huge ancient animals, as well as countless plants, are ......" Hai Ge couldn't express his surprise in words, so he had to add gestures and make a circle with his two arms, meaning where did all those living creatures in the outside world come from?

Wedel didn't mean to go any further, shrugged his shoulders and said, "From the moment you recognized who I was, it must have been strange how I managed to move around Earth with the help of my dual identity, right?" ”

Hai Ge nodded repeatedly, until now, he couldn't equate the old garage on the outskirts of Xijin City with the imposing underground plant kingdom in front of him.

"When I first landed on Earth, I didn't know anything about the planet, so I didn't dare to act rashly," Wedel said. At that time, after research, I decided that the street dweller could not be noticed, but could stay quietly in the corner and make subtle observations, so I decided to use this identity. I consider myself lucky to have found the old garage where the homeless man lived, because it was not only remote, but also had loose underground rock formations, which made my journey deep into the heart of the earth very convenient.

"But how did you dig such a long passage?" Haige asked.

Hearing this question, Weidel's eyes flashed, but he quickly returned to his senses and replied, "Well, let's save this question for later." In short, what I can tell you is that the only prerequisite for humans to live in the core of the earth is that they have a powerful enough navigation tool to withstand the heat of several thousand degrees and 1.5 million atmospheres to pass through the 4,700 kilometers above the core to get here. ”