After becoming an elder of Kunlun, although the authority became extremely heavy, it seemed that there were fewer things to do every day.

Apart from daily practice and guiding disciples, they have plenty of free time at their disposal and will not be forced by the sect to do all kinds of trivial work - of course, there has been no war in the world of cultivation recently, and no ancient secret realms have been revealed, so the elders are relatively free, and they only gather once a month in Yuxu Palace to fulfill their obligations to participate in politics and affairs of state.

Anyway, just meditate and sleep the whole time.

The lifespan of those in the Nascent Soul stage is generally over 5,000 years, so everyone is basically slow-paced, and it is normal for a dispute over one thing to last for several months.

It is said that Kunlun Taiqing Sect is relatively good, after all, the head of Ziwei Sect does not like to drag things out. Some small sects are really exaggerated, the Yuanying elders hardly care about things, and once they intervene, they are definitely against something - and then it can't be implemented because no one wants to waste time convincing opponents.

On this day, Qiu Changtian was called to Yuxu Palace for a meeting again.

When he arrived at the main hall and saw that the lineup of elders present was unexpectedly complete, he knew that something must have happened.

The big one is coming!

Just as he was pondering, he heard Master Ziwei suddenly say:

"Clouds pass over the North Sea, and rain falls on the South Sea. Black evil spirits are in the center, and the sky canopy descends on the imperial camp. The spirit official holds the jade seal, and Taiyi holds the golden banner."

"Chang Geng, how do you think these verses in the Golden Palace Secret Realm should be interpreted?"

Qiu Changtian was stunned for a moment, then replied:

"And based on the connections between the previous secret realms, these few verses should be hinting at the location of the Seven Treasures Mysterious Garden."

"The clouds pass over the North Sea, and the rain reaches the South Sea. If it is clouds and rain, it must be high in the sky."

"It passes the North Sea in the morning and reaches the South Sea in the evening. In other words, this Seven Treasures Mysterious Garden is either extremely large, covering the entire territory of Shenzhou as well as parts of the North Sea and the South Sea; or it is extremely fast, able to fly from the North Sea to the South Sea in an instant, so that it can meet the requirement of 'raining in two places at the same time'."

"Combined with the following 'Black Evil is the Central Ban, and the Sky Canopy descends to the Imperial Camp', I think it should be an extremely fast thing."

"Otherwise, if it is as big as Shenzhou, the number of the Black Evil Central Forbidden Zone and the Heavenly Canopy Imperial Camp to guard the secret realm must be huge and boundless - in this case, how can it be difficult to be discovered?"

At this point, a Kunlun elder suddenly asked:

"Although in theory, the Central Forbidden Zone and the Imperial Camp are both military guards, they don't necessarily have to be everywhere in the secret realm. Is it possible that the Seven Treasures Mysterious Garden itself is very large, but the core area inside is very small, so there doesn't need to be so many guards?"

"If the core area is extremely small, why should the overall area be extremely large?" Qiu Changtian asked back.

The other party remained silent.

"But if it is an extremely fast thing, it can explain why it has not been discovered." Qiu Changtian continued, "Even if there is no special reason, there is no need to build the secret realm so huge."

"So where does Elder Chang Geng think the Seven Treasures Mysterious Garden Secret Realm is?" Another Kunlun elder asked, "Since it is an extremely fast object, that means it is patrolling the sky day and night, right?"

"Given the size of China, if it were to travel from the North Sea to the South Sea, its speed would be so fast that it would be impossible for us to catch it. How would we locate it?"

If we can't locate the Seven Treasures Garden, let alone find a way to enter it.

"Let's not talk about this for now." Qiu Changtian paused for a moment and suddenly said, "Dear elders, have you ever thought about what flies the fastest in the sky?"

Everyone looked at each other.

Cloud? Wind? It can't be a bird.

"Of course, the sky is the fastest." Master Ziwei said suddenly, "The sky rotates around the Shenzhou continent once, which is one day."

"If the Seven Treasures Mysterious Garden flies extremely fast, then why can it fly so fast?" Qiu Changtian echoed, "Birds have wings to flap, and the wind has cold and hot pressure. If the secret realm of the Seven Treasures Mysterious Garden is hanging above the sky, then it can be explained why it hangs over the North Sea in the morning and reaches the South Sea in the evening?"

The elders of Kunlun no longer had any doubts and were all filled with admiration.

To put it bluntly, although the cultivation civilization in this world is highly developed, it is precisely because the various spells are too convenient that not much scientific thinking has been developed.

When people learn various magic spells and supernatural powers, they mostly just follow the principle of "I will practice as it is recorded in the classics" and rarely think about why it is so.

Why can the Qibao Xuanyuan Secret Realm fly? Because it is attached to the sky, so when the sky rotates, the secret realm also rotates... Regardless of whether it is actually true or not, it sounds very reasonable anyway.

As for how to get close to the sky, that is not something that the Nascent Soul cultivators need to consider. They have to look for immortals.

After the meeting, Master Ziwei called Qiu Changtian to his side and asked:

"Are you sure about what you just said?"

"Not at all sure." Qiu Changtian replied.

"Yes." Master Ziwei nodded.

If Qiu Changtian patted his chest to make a promise, but the Immortal Chisong went up to take a look and found that there was nothing, it would definitely affect his impression in the Immortal's mind.

It's just a guess, which is fine. It's just a survey of the sky, it doesn't matter.

When Qiu Changtian came to Tianmen Palace, Sect Leader Ziwei told Immortal Chisong about Qiu Changtian's guess.

"Are you sure, Chang Geng?" Immortal Chisong's reaction was exactly what Sect Leader Ziwei had expected.

"I'm not sure at all." Qiu Changtian replied, "It's just that the Seven Treasures Mysterious Garden is hanging high in the sky. Even if it's not hanging in the sky, we have to patrol the sky to have a chance to find its trace."

"Yes." Immortal Chisong nodded and said, "I and other immortals often patrol the sky, but I have never seen this 'secret realm hanging in the sky'."

"But if the secret realm travels a thousand miles a day and moves with the rotation of the sky, can the immortals see it clearly?" Qiu Changtian continued to ask.

"Probably not." Chisong Immortal shook his head and said, "I can't match the speed of the sky."

Even the immortals admit that they cannot move fast enough, so how fast could the sky be moving?

Qiu Changtian pondered for a moment and asked again:

"The Sky is moving, what is the route?"

"The four seasons are all different," Chisong Immortal replied. "Generally speaking, it is rotation. In summer, the center of rotation is biased to the south, and in winter, it is biased to the north."

"In other words, at the center of the rotation, the sky is essentially stationary." Qiu Changtian said quickly.

Immortal Chisong and Sect Leader Ziwei were both stunned.

Although both of them were senior monks who had lived for a long time and had excellent arithmetic skills, they were completely unfamiliar with pure mathematical concepts such as linear velocity and angular velocity.

At this time, after Qiu Changtian's guidance, he immediately reacted.

"If the Seven Treasures Mysterious Garden Secret Realm is attached to the inner wall of the sky," said Master Ziwei in a deep voice, "will the speed of movement be different throughout the year as the position of the vortex center changes?"

"For example, on a certain day of the year, the location of the Seven Treasures Mysterious Garden happens to be the center of the sky, so the monks from the lower world can enter; the rest of the time, it revolves around the center, so it is impossible to find it and cannot enter?"