But Zhang Hao heard that Hongxuanzi was going to listen to the 'Earth Circle Talk', and his eyes suddenly brightened - this is an opportunity, an opportunity to add points to himself!

Compared with the Xuanzhen Sect, I won't talk about the disadvantages, but I also have many advantages. For example, the understanding of the world! And now that he has the opportunity to make a 'long speech', Zhang Hao certainly can't miss the opportunity.

So Zhang Hao started with the elephant in the bracket first.

It is said that when he first got the bracket elephant, Zhang Hao made a simple inference based on various legends and records on the bracket image, and today Zhang Hao said this inference again, and opened the topic with this.

"At that time, the disciple thought that the northern continent of the earth is frozen all year round, and it is said that the sun of the continent of the earth is very low, which is completely different from our side. Then they must receive very little sunlight, at least less than we do here.

And then there is the Hidden Land Continent in the northeast, where the sun is even on the horizon, and many times it is plunged into darkness, what is the reason for this?

Compare it with the Turbulent Continent, where the sun is surging and the heat waves are rolling, and the disciples suddenly realized.

There is only one explanation for this phenomenon – the earth is spherical!"

Saying that, Zhang Hao used the spell as a demonstration, first condensed an ice ball of about one meter on the ground, and simply drew the location of the seven continents on the ice ball, and then condensed a fireball as the sun from a distance, which was very far away. The light flickered, the puck slowly rotated, and a wonderful scene appeared.

However, what needs to be pointed out here is that at this time, Zhang Hao consciously tilted the axis of rotation of the planet, and it was the rotation of the planet, not the rotation of the sun.

Why do you do that? Maybe it's a knee-jerk move. Knowing what is going on, one will have an instinct to seek the truth.

But after Zhang Hao did this, the problem arose again.

"Why doesn't the sun revolve around us?" Hongyuanzi spoke, "The sun in the sky is so small, and the earth under our feet is so huge, and according to our usual observations, it should be the sun revolving around us!"

"This ......," Zhang Hao scratched his head, "I don't know if there are astrologers here in the Xuanzhen Sect?" According to the analysis of the astrologer's data, Zhao Dahe believes that including our planet, there are also five stars of 'gold, wood, water, fire, and earth' that revolve around the sun, so that many problems can be explained. (Note (1))

As for saying that the sun is small, that is an illusion. According to Zhao Dahe's calculations, the size of the sun ...... It is very likely that it is tens of thousands of times the size of our Tianyuan Star. And the reason why it looks small is because the sun is far, far away from us!

I have a way to prove this!"

"How do you prove it?" asked the head of the sect, Hongxuanzi.

"Sunshine is parallel!" Zhang Hao first threw out a concept, and then began to explain. If a small fireball glows, its glow must have an angle. Unless it is a wall or a vertical face that shines, its light is parallel and has no angles.

The light shining on the Tianyuan Star has no angle (the faint angle is difficult to measure).

It's a simple test that can be done in the field. Everyone was busy for a while, and suddenly stopped talking. If this is true, then the sun in the sky should be bigger than you think.

Astronomy was revealed in front of everyone for the first time, and Zhang Hao regarded astronomy as his weapon.

Zhang Hao then began his own performances, the concept of the rotation of the planet and the concept of the day, the concept of revolution and the year, the concept of the axis of rotation and the ecliptic plane, and used some common stars such as the North Star as evidence.

Everyone is a practitioner, especially the Xuanzhen Sect has "Xiao Zhou Tiangong", and everyone also has a simple study of the stars, and they gradually recognize what Zhang Hao said. But it gradually shook me.

Why do we sometimes not see Venus and Mars? Why does Mars sometimes regress? Put it on an orbital plane, everything is clear at a glance!

Young Master Zhang led the audience.

The first time I came to Xuanzhen Sect, it brought a huge shock to Xuanzhen Sect.

After a long time, the head of the Xuanzhen Sect finally sighed, "What about the moon? You talked for a long time, but you didn't say anything about the moon!"

"Because, the moon revolves around us! and it is the only planet that has been observed to revolve around us. The moon rotates once in a month, and we have made a monthly calendar based on the rotation time of the moon.

In addition, the moon itself does not emit light, it is the reflection of the sun's rays, and the change in the phases of the moon also shows that our earth and the moon in the sky are spherical......"

Zhang Hao used two ice balls, one large and one small, plus a fireball to demonstrate the changes in the phases of the moon, and even including lunar and solar eclipses!

Finally, Zhang Hao said: "At present, according to Zhao Dahe's measurements and calculations, the diameter of our Tianyuan Star is about 128,700 kilometers. As for the moon and the sun, because they are too far away, we have not yet found a way to measure them. ”

"Oh...... Oh......" The gods and goddess stage masters nodded in unison. Zhang Hao explained, unknowingly, he had conquered all the masters. Maybe there are some details that Zhang Hao can't say, and Zhang Hao doesn't say some calculation data and processes, but Zhang Hao can't say anything about the derivation process, various evidences, etc.

And the people in the main hall, I don't know when it has exceeded two hundred, and many Yuan infants have come in.

Suddenly, Zhang Hao's ancestor Hongyunzi took the lead in applauding, "Okay, very good! Zhang Hao, the pride of your Xuanzhen Sect, the Xuanzhen Sect can accept you as a disciple, and it is also the luck of the Xuanzhen Sect!"

Zhang Hao looked at this ancestor, and his eyes flashed with gratitude. Hongyunzi's words are very weighty, and they also characterize Zhang Hao - this disciple is not simple, Xuanzhen Sect should cherish it!

yes, it's not easy. Everyone nodded slowly, and this insight was not trivial—in the world of cultivation, the understanding of heaven and earth is very important!

However, the problem of the circle of the earth has been solved, and there is also a new problem--where is the 'heaven'? What happened to the heavenly tribulation during the tribulation? Where is the fairy world? Could it be that the ascension ran to the moon?

In the past, we have always paid attention to the way of heaven, but the theory of the circle of the earth has led to a great impact, that is: where is the 'heaven'? What is the way of heaven that we practice? What is the thing that we usually swear?

So for a while, no one asked about Zhang Haoda's voyage, and everyone had a heated argument about cultivation.

After a while, Zhang Hao said cautiously: "That...... I can probably explain the Apocalypse. ”

Everyone's eyes were fixed on Zhang Hao.

Zhang Hao took a deep breath, "Sect Master, this may involve some secrets. I can say that there are no requirements either. But I guess this secret shouldn't be passed on to the outside. ”

Hongxuanzi nodded: "Don't worry, everything present is reliable." If the news comes out of the Xuanzhen Sect in the future, I will personally apologize to you!"

"No, no, no......" Zhang Hao hurriedly waved his hand, "Zhangjiao, there was a catastrophe when my father was an infant before. With my father's cultivation and foundation, I can't resist it at all.

At that time, I had an idea, and I used iron pillars, iron cables, iron fences, etc., to block my father's side and overhead. As a result, lightning hit the ground along the iron cables.

In the end, the iron rope was partially melted, but my father successfully turned into a baby.

Even after the catastrophe, my father's foundation was more solid, and he just broke through to surpass Liu Jingming, the county guard of Ninghe County at that time, and Liu Jingming had already broken through for more than ten years.

Later, Liu Dingshan, the Emperor of the Kingdom of Qixia, broke through to the late stage of the god transformation by the sea, causing the catastrophe again, and we still used this method to avoid the catastrophe. After that, Liu Dingshan's cultivation and foundation were also unprecedentedly strengthened. ”

At this time, Hong Zhenzi, the head of the Law Enforcement Hall, spoke: "I have been in contact with Liu Dingshan, and his foundation is not at all like he has just broken through, and it is very stable. I think it's the credit of the Heavenly Tribulation!"

With Hong Zhenzi speaking, everyone's eyes looked at Zhang Hao even brighter. Zhangjiao Hongxuanzi asked in surprise, "What is the reason?"

Zhang Hao said slowly: "Coach, I'm just guessing. In my opinion, the Apocalypse is actually a natural phenomenon, like thunderclouds in the sky. When a practitioner breaks through, it will attract a large amount of aura. These auras rub against each other, perhaps creating an effect similar to that of thunderclouds in the sky.

But just like rain clouds in the sky, not all rain clouds will thunder. And it's the same with cultivation, not everyone will cause a catastrophe.

However, judging from the current situation, the catastrophe is not a punishment, but a kind of opportunity. After the Heavenly Tribulation Quenching, the aura is purer and the foundation is more stable. If we can find the law and artificially control the occurrence of lightning, then we will undoubtedly get a shortcut for the Xuanzhen Sect!

According to my observations and speculations, there is a lot of water vapor on the seaside, and the combination of aura and water vapor is more likely to cause a catastrophe!

I suggest that anyone in the sect who is preparing to transform a baby recently can go to the Ocean Group, where we are fully prepared. ”

The atmosphere in the main hall is heavy again, compared with the theory of the circle of the earth, astronomy, the great navigation, and so on, the cultivation is directly related to everyone! This is the real vital interest, and you can't afford not to pay attention to it!

After a while, the head of the sect, Hongxuanzi, asked Zhang Hao with some amazement: "How sure are you that the Heavenly Tribulation is a natural phenomenon?

"Ten percent!" Zhang Hao's words were categorical! At the critical moment, there was no room for hesitation! At this time, Zhang Hao's expression was serious and serious, and his words were firm and decisive. The president's bearing bloomed in Zhang Hao.

Hongxuanzi looked at Zhang Hao, and at this moment he saw not an ordinary disciple, but ...... President of Dayang Group!

Hong Xuanzi was amazed and had a comprehensive understanding of this disciple who had not climbed the mountain gate for nearly a year after apprenticeship. Indeed, as Hongyunzi said, the Xuanzhen Sect is lucky to have a disciple like Zhang Hao!

The earth circle, the great voyage, astronomy, and the matter of this heavenly tribulation made Hongxuanzi see the future of the Xuanzhen Sect.

However, after exclamation, Hong Xuanzi still spoke, but his tone was soft, and he said almost in an equal attitude: "Zhang Hao, there is one more thing to discuss with you today, I think you have guessed it." That is: sailing, warships!"

(It's almost the end of the month, if you have a monthly pass, hurry up and smash it, the monthly pass is valid for the current month, and it will not be accumulated.) ）

(Note (1): The astronomical setting is ready to copy the solar system, everyone is familiar with it, and it is easy to write.) And some brain holes about the moon will also be written here.

Some of the unwritten in "Half-Immortal Civilization" will be improved here. ）