Chapter 518: return

Since the system is no longer usable, Yin Tian can only accept this reality. Fortunately, his current strength is not bad. Even without the help of the system, it is enough to protect himself, but it will be inconvenient to perform tasks again.
Soon, Yin Tian had left the magma cave and flew in his direction after finding Rothfair's breath.
Roosevelt lives in the only palace in the underground world. The palace is made of a dark red strange rock, which looks very depressing.
Silently pouted, Yin Tian really couldn't appreciate this aesthetic.
Rothfer had already felt Yin Tian's arrival. He walked out of the palace and was taken aback when he saw Yin Tian's embarrassed appearance. He didn't expect Yin Tian to be so miserable.
The original golden armor was severely broken, and it was deformed and cracked in many places, and there were faint signs of melting.
Yin Tian's helmet was also cracked, and his face mask had long since disappeared. Roosevelt saw Yin Tian's face for the first time.
"You're back, are you going well?" Rosfell asked.
Yin Tian nodded and said, "It's not bad, Rothfair, you can rest assured that the number of Netherstones I have already exceeded 10 million, you don't need to pay for the subsidy yourself."
Roosevelt heaved a sigh of relief when he heard this. He was really afraid of having to supplement Yin Tian by himself.
As the king of the underground human race, although Rothfair has the supreme power in the race, he also needs to use a lot of Netherstone.
Whether it is for his own cultivation or rewards to his subordinates, the Netherstone is indispensable.
However, the amount of Netherstone is so much more than every year, and the only way is to flow out from the lava river above, so Roosevelt has to save money.
I’m afraid Rosfer didn’t expect that Yin Tian had obtained nearly 90 million Netherstone in the magma river, and almost hollowed out the 6-component Netherstone veins. If it weren’t for the high temperature, Yin Tian would even have it. All the veins are absorbed.
Ignorance is sometimes a kind of happiness, and at least Rothfair is in a good mood now.
Of course, in the next few years, Rosefair will not be so happy when he discovers that the number of ghost stones produced by the Magma River has drastically reduced.
"By the way, Roosevelt, can you tell me about your underground humans?" Yin Tian asked while following Roosevelt into the palace.
Rothfair nodded, his tone becoming a little low.
"Yes, actually... our underground humans are a cursed race."
"Curse?" Yin Tian looked puzzled.
"Not bad!" Roosevelt explained: "It's like this. About ten thousand years ago, our ancestors also lived on land... Later, because of the curse, we came to the underground world. So far, there have been Thousands of years have passed."
Roosevelt spoke slowly and seemed unwilling to bring up these past events, but since Yin Tian asked him, he still told the whole story.
After a long time, Roosevelt finally finished speaking, and Yin Tian couldn't help but sigh.
Unexpectedly, the underground humans have a history of thousands of years. I really don't know how they survived in this extremely harsh environment.
Water and food are extremely scarce, the climate is muggy, and the oxygen content is extremely low.
The lack of sunlight all year round made their skin extremely gray and their eyes had deteriorated very seriously.
Although underground humans can use the Netherstone to cultivate to increase their life span and adaptability to harsh environments, what's the point of this? It's nothing more than lingering in this underground cage.
"Rosfell, haven't you thought about going back to the ground?"
Although he knew that the underground humans would cause great chaos when they returned to the ground, Yin Tian couldn't help but ask this sentence.
Roosevelt sighed and said: "Why haven't we thought about it, but after so many years, we have long been unable to adapt to life on the ground. The curse on our body prevents us from adapting to the environment on the ground. Of course, there are other things in the underground world. Life can adapt to the environment on the ground, but this obviously does not include the underground human race."
"The hot sun will make our eyes pain unbearable, and our skin will quickly erode. After we breathe in the air on the ground, we will become weak and lethargic. This kind of curse has already made us go back. Thoughts on the ground."
Yin Tian was speechless when he heard it, just as they could not adapt to the underground space, Rosfeld and the others could not adapt to the ground environment.
As for the various reasons Rothfair said, Yin Tian also had some speculations.
Due to tens of thousands of years of evolutionary mutation, it is normal that the underground human races cannot adapt to the scorching heat of the sun. As for the sleepiness after breathing the air on the ground, it is not difficult to understand, it is nothing more than drunken oxygen.
The so-called drunken oxygen is due to the fact that the human body has just adapted to the low-oxygen environment in the plateau area, and re-enters the area with relatively high oxygen content, and will not adapt again, resulting in fatigue, weakness, lethargy, chest tightness, dizziness, diarrhea and other symptoms , Will produce a so-called "deadaptation reaction" or "low original reaction".
The oxygen content in the underground world is extremely thin. It feels like Yintian that the oxygen content here is much lower than the highest peak in the world, the oxygen content on Mount Everest. Therefore, once the underground human race reaches the ground, the oxygen content will increase tenfold. Under the circumstances, it is not surprising that there is a strong drunken oxygen phenomenon.
I know that Gui knows, but Yin Tian won't explain to Roosevelt either.
After thinking about it, Yin Tian asked again: "By the way, Rothfair, I have seen some monsters with heads that look like you in the outer passage, but their bodies are like dwarfs and have a bunch of wings. Those are also underground humans?"
Rothfair shook his head, his face darkened again.
"Hey, those people...no, it should be those monsters. In fact, they were originally our underground humans. They were originally some mutated children. Thousands of years ago, for unknown reasons, many women gave birth to those monsters, and one of them was born. For bat wings, the rest are no different from ordinary children. There are not many underground humans, so we didn’t want to execute them, but raised them as ordinary children.

"But later... we found out that the bodies of those children couldn't grow up! Moreover, their hands and feet grew long, sharp claws, and became extremely bloodthirsty and irritable! When they grew up a little bit, these children couldn't help their hearts. Desire to kill, but kill or even swallow the same kind, then the underground humans can no longer accommodate them.
"But after all, they were also born from underground humans, and their parents were still there, so they didn't kill them in the end. They just drove them to the outside passage, planning to let them fend for themselves. But who knows, not only did they not die, Instead, they survived and continued to multiply, forming a new ethnic group."
"Fortunately, these things don’t like light, and generally don’t enter the underground world. They can only live in the outer passages. Coupled with those things whose strength is average, they will not have any impact on us. So for so many years, it’s acquiescence. They exist."
Yin Tian sighed after hearing this, and secretly said that this was also a group of poor people. Those so-called demons should be underground humans with genetic mutations.
After talking to Rothfair again for a while, Yin Tian left.
"Rosfell, I hope I'm leaving when we see you again."
"Okay, you are my permanent friend of Roosevelt. I am so lonely. I have lived for three hundred years. Only you can defeat me. You are the only friend I recognize. I hope you will have the opportunity to come to the underground world again in the future. "Rosfell said lonely.
Although Rothfair is the king of underground humans, he is also lonely. The wisdom of the underground is not average, and the level is strict, so he has no friends in his life~EbookFREE.me~Although at the beginning, Yin Tian It is Rothfair’s enemy, but he is no longer hostile to Yin Tian. The opponent not only helped him solve the huge hidden danger of the magma dragon, but also had no idea of ​​hitting the 3 million Netherstone in his hands. Rothfair was full of affection for Yin Tian, ​​thinking that he was an upright, open-minded person worthy of deep friendship.
Yin Tian smiled when he heard Rosfer's words, but found a big problem in his heart.
Roosevelt turned out to be more than three hundred years old, but his appearance is clearly still very young. Why is this?
The blood of the devil can extract life-prolonging things. Isn’t it the same for the underground human races that have the same origin as the devil? Is their blood more effective than the blood of the devil?
Shaking his head slightly, Yin Tian quickly suppressed the thoughts in his heart.
The underground humans are miserable enough. If he talks about this idea, I am afraid that human greed will sooner or later hit their attention. Even if it can't be done with the current level of technology, after ten years, a hundred years later, when humans are capable of expedition to the underground world, then I am afraid it will be the end of the underground human race.
Yin Tian is not a savior, but he still has a kind heart.
Today's things, he will be rotten in his heart, no one will tell, just as a reward for Roosevelt for helping him get so many Type 2 cosmic energy crystals.
"Goodbye Roosevelt, I hope we will meet again."
After Yin Tian turned around and flew out, Rosefell was a little startled to see.
This new friend is really free and easy, and even left like this, I feel a little bit unwilling to let go.
He didn't know that the reason Yin Tian left so quickly was because he couldn't help but shed some blood on Roosevelt to study the reason why he could live so long.