Lan Yun said: "We have been living in this Upper Cultivation Realm, and we have no concept of the Immortal Cultivation Realm and the Flying Immortal Realm, brother, you still have a lot of research on the starry sky, why don't you tell us about the mystery of this Immortal Realm Galaxy." ”

He Lang and Zhan Zhaohua also have a strong desire for knowledge, and they both nodded together.

He Lang and Lan Yun, the standard of measuring the stars is often compared with the earth where they lived before.

For example, the size of the population, the distribution of rivers and mountains, and the reproduction of animals and plants.

After coming to the Upper Cultivation Realm, they found that this was consistent with many of the laws on the earth.

It's like 24 hours a day, four seasons a year in spring, summer, autumn and winter, so they don't feel very uncomfortable after coming here, and they feel like they've found their hometown again.

And Zhan Zhaohua has no concept of these, he has always lived in the upper cultivation realm, he has only heard of other stars, and he has never thought of setting foot in it, his lifelong goal is to help Shizun and manage Qingxu Peak into the first peak of the Jade Immortal Gate.

Xu Wenguo, as a genius in the invention world, although the knowledge of the universe and starry sky is not his specialty, it is more than enough to give He Lang and other three popular sciences.

After coming to the Upper Cultivation Realm for more than eight years, he has read countless geographical and cultural materials and classics, and now he also has a certain understanding of the general situation of this Immortal Domain Galaxy.

Although He Lang and the others didn't know anything about these geographical starry sky, they gradually became interested in Xu Wenguo's explanation.

Under Xu Wenguo's vivid description, the bodies and minds of several people were completely shocked by this mysterious and unknown world.

In order to let several people intuitively understand, Xu Wenguo took out a star map of the Immortal Galaxy from the storage bag, and three black wooden balls of different sizes.

He picked up a log ball the size of a broad bean and said, "This ball is equivalent to the size of the Upper Cultivation Realm, and according to my comparison through words, this Upper Cultivation Realm is extremely similar to the size of the earth we came from. ”

"The so-called Immortal Cultivation Realm, it is the second largest in the astral body where the Immortal Realm Galaxy can survive, and it can top the sum of the volume of hundreds of Upper Cultivation Realms, this star body is specially set aside by the Immortal Emperor Zun for the cultivation of high-level monks, and every year tens of millions of monks in the out-of-body period and above go to practice, and this continent is also directly controlled by the Immortal Emperor Zun. ”

As he spoke, he took out a wooden ball the size of a fist and said, "That's probably the comparison." ”

A few people saw clearly that a wooden ball the size of a small broad bean was placed next to the wooden ball the size of a fist, and there was no comparison.

After that, Xu Wenguo held up the largest wooden ball and said: "This is equivalent to the Flying Immortal Realm, you see, the volume of this is more than fifty times that of this fist-sized wooden ball, it is also the largest star that can survive in the Immortal Galaxy, all the monks who have crossed the Flying Immortals, most of them are currently concentrated in this continent, this continent has resources and wealth that you and I can't imagine, and this continent is jointly managed by the Five Venerables and the Immortal Emperor." ”

For the first time, the few people who were listening had the concept of the size of a star, and they were all surprised that the Upper Cultivation Realm they lived in was so small.

Xu Wenguo continued: "And in the entire Immortal Domain Galaxy, there are a total of sixteen thousand five hundred and twenty-four large and small stars. Of the sixteen,524 stars, only 2,840 are suitable for living beings. Other stars that cannot survive are either extremely cold or extremely hot, and some stars, although they are also behemoths, are covered with red flames on their surfaces, and before they get close, they will be directly roasted and evaporated. ”

He Lang was puzzled and asked, "With such a large volume as the Immortal Cultivation Realm and the Flying Immortal Realm, there are only these two that can be suitable for habitation?"

Xu Wenguo nodded hurriedly and said yes.

"I remember that there are countless large and small stars in the Milky Way, and there are hundreds of billions of stars alone, so what does this fairy galaxy have to do with the Milky Way?" Lan Yun also asked.

"This immortal galaxy and the Milky Way galaxy are incomparable, before we came to the Upper Cultivation Realm, we had a detailed investigation of this galaxy, and the result of the investigation was that this immortal galaxy has actually been close to the left side of the solar system, but it is covered in dense fog all year round, and we have not been able to peek at the slightest movement of this star field. ”

Xu Wenguo stripped his hair and continued: "At first, we still regarded this dense fog area as a hollow area, that is, a zone where there could be no stars, so we separated him from the Milky Way. ”

He Lang and the three of them listened attentively, and Zhan Zhaohua also interjected at the right time: "The dense fog that Mr. Xu said should be the maze laid by the Immortal Emperor Emperor three thousand years ago in order to protect itself, so as to prevent the intrusion of foreign forces. ”

It seems that Zhan Zhaohua is not completely ignorant of the outside world.

Xu Wenguo nodded again and again: "What Brother Zhan said is that at first we thought that this area was a self-contained system and an infinitely expanding void area around it, but since we found that the mist suddenly became thinner, I realized that there are not only a large number of stars here, but also many planets suitable for survival, so now I can conclude that this fairy galaxy is just a component of the Milky Way." ”

All three nodded.

"Brother, then according to what you said, the solar system is centered on the sun, so where is the center of this fairy galaxy?" Lan Yun is a good student who is good at thinking.

"At the center of the Immortal Galaxy is a star called the Desolate Realm, its size is unimaginable, but it is surrounded by flames all year round, so that tens of thousands of stars around him are roasted into a forbidden area where no one lives. ”

The illuminated body that exists like the sun in the Desolate Realm is also the star in this fairy galaxy, and the other more than 10,000 large and small stars all revolve around the central point of the Desolate Realm, but the volume of this star in the Desolate Realm is hundreds of times larger than the volume of the sun, no wonder the surrounding planets can exceed 10,000.

In the star field map, there is a huge star in the center, and countless stars that are much smaller than the surrounding are densely scattered around, and the outer reach, the smaller the star size, and the upper cultivation realm will be included in the lower right corner of the star field map, far away from the center, as if the abandoned lone star shimmers slightly.

"I've heard Lan Yun mention before that the Upper Cultivation Realm is the closest star to the Earth and is suitable for human habitation, so does it have anything to do with the Earth?, why does he orbit the Desolate Realm, but it is consistent with the Earth's calculation time?" He Lang asked.

This question has always been the biggest doubt in his mind.

In this fairy galaxy, the time calculation unit of each star is different, some stars have less than 24 hours a day, and some are much longer than this time.

The annual calculation system is even more confusing, with the Earth having 365 days in a year, which is calculated according to the time it takes to orbit the sun as the center.

And the time of the orbit is even more different at different distances.

Based on He Lang's superficial understanding of the Upper Cultivation Realm, he knew that a day here was also twenty-four hours, and a year was longer than the earth, three hundred and eighty days, and what puzzled him the most was that in the Immortal Galaxy, the calculation of time was based on twenty-four hours a day, three hundred and eighty days a year.

Could it be that this remote little star in the Upper Cultivation Realm contains some secrets?

"I haven't found strong evidence of a relationship between the two, but there are many similarities between the two stars. Xu Wenguo also seems to be cautious when talking about this issue.

He Lang and Lan Yun looked at Xu Wenguo in surprise and listened to his words.

"I'm just making a bold guess now, this Upper Cultivation Realm is one of the few strange cases in the Immortal Realm Galaxy, and his trajectory is very likely to be self-contained, and should not be affected by the Desolate Realm. ”

Xu Wenguo finally concluded: "All in all, there are many essential differences between this place and other stars, and if you have the opportunity to go to other stars in the future, you can feel the difference for yourself." ”

Xu Wenguo's astronomical knowledge has been popularized here, and it will be over.

A few people are still unsatisfied, but they also know that many things need to be felt and touched by themselves in order to have a deeper understanding.

So they went back to the original topic.

"Looking at it this way, there are many masters in the Immortal Cultivation Realm and the Flying Immortal Realm, they will all come here, and something big must be about to happen. Lan Yun said.

"I heard that they learned that there would be a change in the Ancient Temple, and these masters were all sent by the Immortal Emperor and the Five Emperors to suppress this major change. Zhan Zhaohua explained.

Several people were at a loss, and then heard Zhan Zhaohua say: "This change is not necessarily without benefits, the natal magic weapon I used the day before yesterday came from the Desolate Ancient Temple, and I think there are many people who should come with the mentality of looking for treasures." ”

He Lang and Lan Yun had seen the beacon fire slash that day, the power was terrifying, and as soon as they made a move, they killed the two Jindan. I don't want it to come from the Ancient Temple.

"What kind of place is the Ancient Temple?" He Lang asked curiously.

Zhan Zhaohua then told the three of them about the origin of the Ancient Temple.

The Ancient Temple is located in the middle realm of upper cultivation, which is full of the power of the demon clan and the demon race, and the aura of demons is pervasive all year round, and mortal monks are scarce, and they dare not set foot in it.

And the ancient temple is even more forbidden land, within a thousand miles, are barren land, legend is there three thousand years ago, the star road changed after the anomaly, all the trees and mountains turned into nothing overnight, thousands of miles, dry bones everywhere.

The Ancient Temple was built three thousand years ago, and it is the most prosperous gathering place of the demon and demon races.

At that time, the two demon clans were both under the rule of the Demon Emperor, and they were not divided into two.

This is also the peak period of demon power, and the immortal path is suppressed by demons, and can only avoid the abundant spiritual energy in the upper realm of the astral body, because the abundant spiritual energy in the upper realm has great restrictions on the play of demon exercises.

At first, the Ancient Temple was only used as the palace of the Demon Emperor in the upper cultivation realm, and when the vision occurred, the Demon Emperor was stopping here, and then fell here.

After that, because there was no leader, the demons were divided into two clans, and the infighting continued, which also provided a good opportunity for the development of immortal cultivation.

It is rumored that this time the Ancient Temple attracted the gathering of many powerful masters, and it was also related to the Demon Emperor.

Someone spread the rumor, the demon and demon clans, to activate the Demon Emperor left the sealing spirit in the Ancient Temple.

And the day the seal is unsealed, it is also the time when the forces of the two demon clans combine again and make a comeback.

At that time, the Immortal Dao Human Race will face a major impact from the Demon Realm.