It turned out that there were so many dead spatial worlds in the Endless Void, or rather, lifeless spatial worlds. Many dead spatial worlds were actually bigger and more spacious than the Upper Realm. If they could be used, they could probably support a lot of living beings. Including humans, monsters, plants, elves, and so on. They could all develop well.
"There's no need to look. Those are all dead spaces. People will die immediately if they enter."
Huang Ying knew that Du Feng was interested in those gray spheres, so she explained to him. In those dead spaces, animals, plants, and elves would all die if they entered. Even a piece of stone would turn into ashes as soon as it entered the Deathly Still Space.
Unless there was a large amount of Primary Force, such as the entire Upper Realm's Primary Force being filled into a gray sphere that was about the same size, the dead space could only be revived. However, if that was the case, the Upper Realm would become a dead space. The azure blue would no longer exist, and it would become a gray sphere floating in the Endless Void.
By the same logic, once the Upper Realm became a dead space, all living beings would cease to exist. Only Immortal Emperors, Devil Emperors, and Demon Lords would be able to escape from it. Only Immortal Emperors, Devil Emperors, and Demon Lords would be able to escape from it.
Uh … That was terrifying. Du Feng shrunk his neck. He dared not imagine what it would be like if the Upper Realm became a dead space.
"Don't be afraid. If nothing goes wrong, the Upper Realm can still exist for 5.66 billion to 6.67 million years."
This time, it was not Huang Ying who answered Du Feng. Instead, it was Du Tulong who told him the truth.
"Why is there a difference of 200 years?"
Du Feng was also curious about this.
"It's simple. It's because of the big locust tree."
Du Tulong told Du Feng that it was because of the big locust tree that floated in the Void. It stabbed the branch into the Upper Realm through the Spatial Rift and absorbed some Heaven and Earth Primary Force. In addition, the Tribulation Thunder kept striking it, which consumed Heaven and Earth Primary Force.
"Won't the Upper Realm sphere be depleted when warriors absorb Heaven and Earth Primary Force?"
Du Feng's question was a good one, because there was only one big locust tree, no matter how powerful it was. Many Martial Artists and Cultivators in the Upper and Lower Realms relied on absorbing Heaven and Earth Vital Energy to improve their Cultivation. If they were to absorb so much elemental energy over the years, wouldn't that cause the Higher Realm to perish in advance?
"No, it's just a cycle."
Du Tulong's answer was very simple. Even if it was an intelligent human martial artist, an animal, a plant, or even a rock absorbing the elemental energy of Heaven and Earth, it was still a cycle. Humans and animals. All plants would die, and after they died, everything would be returned to nature. Stones would also shatter and eventually return to nature.
Therefore, no matter how they cultivated, they would not let the Upper Realm be depleted, unless their elemental energy was brought out of the Upper Realm.
In other words, people like Donghuang Taiyi and the Black-Faced Demon Emperor who had ascended to the Divine Realm would not bring all the yuan qi they had absorbed in their lifetime to the Divine Realm and inject it into their own shrines. The eternal existence of the Divine Realm depended on this method.
For thousands of years, no one from the Upper Realm had ascended to the Divine Realm. Moreover, the amount of elemental energy taken by an ascending person was not too much, so the impact was not too big. Unless it was an old fellow like the Jade Emperor who had lived for more than three hundred million years, if he left the Upper Realm, it would probably cause a huge impact.
In theory, the sphere in the Upper Realm could still exist for more than five billion years, but the total amount of Heaven and Earth Vital Energy was constantly decreasing. In the future, it would be more and more difficult for martial artists to absorb Heaven and Earth Vital Energy, and it would be more and more difficult for them to improve their Cultivation.
When the Heaven and Earth Vital Energy was reduced to a certain level, there would be no more Cultivators in the Lower Realm. When people practiced martial arts, they could at most strengthen their muscles and bones. Because the concentration of the elemental energy was not high enough, the Cultivators could not improve their Cultivation.
The Upper Realm corresponded to the Three Thousand Lesser Realms below. If all living beings in the Three Thousand Lesser Realms could not improve their Cultivation, they would not be able to ascend to the Upper Realm. This meant that the number of people in the Upper Realm could not be replenished. It was the same for the Heaven Realm, the Demon Realm, the Underworld, and the Devil Realm.
As for the Dragon Realm and the Phoenix Realm, there was no need to think about it. Their descendants needed very good resources to survive. When the environment was bad to a certain extent, the Dragons and Phoenixes in the Lower Realm would have long died out, and there would be no need to talk about cultivation and ascension.
Du Tulong roughly estimated that the lifespan of those in the Upper Realm was about 5.6 billion years. However, when it was 2.8 billion years, it would enter a half-life period. At that time, it would be very difficult for humans to advance to the Body Tempering Realm. It was basically impossible to advance to the Qi Martial Realm, not to mention the Master Realm or the Ascension Realm.
If one listened carefully, it was really quite terrifying. Du Feng pondered for a moment. Fortunately, he was born early. If he was born 2.8 billion years later, he would not have the chance to cultivate for the rest of his life.
However, it made sense. Even among the humans in the Lower Realm, there were many who could not cultivate because of their poor qualifications. As the Heaven and Earth Vital Energy decreased, it was inevitable that those with poor qualifications would be the first to suffer. In the end, everyone could not cultivate and began to wait for their bodies to slowly age.
"How is it? Are you more interested in the True Immortal World after listening to me?"
Du Tulong said this deliberately to provoke Du Feng so that he could improve faster.
Huang Ying had already shown the information about the True Immortal World to Du Feng. It was similar to the Upper Realm and also included 3,000 Small Worlds. The Heaven and Earth Vital Energy was thicker and could probably exist for a longer period of time. Once he got there, he should be able to find some better opportunities.
"If we go to the True Immortal World, will it be considered as an invasion of extraterrestrial beings?"
Du Feng's question was very good because neither he nor Huang Ying belonged to the True Immortal World. If they were to enter rashly, how would they be any different from those extraterrestrial beasts that were released into the Third Heaven in the Star Hall?
"Don't worry, what do you think Connate Numinous Treasures are used for?"
Other than being able to fly quickly, the Connate Numinous Treasure Flying Shuttle had another function, which was to blend into other worlds. Because it was a Connate Numinous Treasure, it would not conflict with any world. If Du Feng and Huang Ying hid in the flying shuttle, they would be able to enter the True Immortal World successfully.
Alright, Du Feng was much more relieved now. He was really afraid that he would be struck to death by the Tribulation Thunder or be surrounded by a group of cultivators the moment he entered the True Immortal World.
"Look ahead, what's going on?"
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