The Primordial Heaven has three levels of time units used in its calendar: Eternity, Century, and Year.

One eternity is ten thousand ages, one century is ten thousand years.

"The world's era is not calculated in centuries, but in tens of thousands of years... That's right, in extraordinary worlds with cultivation systems, the conversion between time units becomes incredibly huge."

The current calendar year is 3845, the 841st year of the 74th ancient era.

"Yes, the last two sections of the Azure Domain are recorded."

This means that at least 80 billion years have passed in the Yuantian Realm to date, and the actual time span may exceed 100 billion years!

Legend has it that countless ages ago, perhaps eight hundred billion years ago, or perhaps nine hundred billion years ago before the counting began, the Yuantian Realm possessed three thousand domains.

But this three thousand isn't three thousand added together, it's three thousand multiplied together!

[There is a billion-dollar celestial domain!]

This is the "Primordial Heaven Domain," not a separate "great domain" like the Vast Ocean's Condensing Waves, which was created by the Azure Domain human race.

However, the current ten billion yuan celestial domain has diminished to thirty thousand domains... This thirty thousand is simply an additive relationship, not a trillion.

However, this doesn't mean that the Yuantian Realm has shrunk countless times over billions of years. From the perspective of the Yuantian Realm as a whole, it has actually been expanding and growing larger through the long-term absorption of other planes!

[However, the Yuantian Domains in the core area of ​​the Yuantian Realm are encroaching upon and merging with each other, and the Yuantian Barrier has been permanently broken.]

At the center of this world lie four boundless domains, twelve imperial domains, and one hundred and twenty royal domains. Even the smallest royal domain exceeds a hundred billion miles in length and width; a True King at the peak of his cultivation would need to fly at maximum speed for two days and two nights to traverse it.

[Besides the 136 domains mentioned above, the rest are miscellaneous domains scattered around them. Of course, this includes the Azure Domain where you are now; it couldn't be more mixed up.]

[A map was also transmitted from the memory crystal. On that map, which, when shrunk, could cover a double bed, Qingyu was just a tiny dot, about the size of a grain of sand.]

Within the Imperial Domain, there are at least a hundred beings at the Sixth Realm, while in the Emperor Domain, there are several thousand.

As for the Boundless Realm... it has seven realms.

[Furthermore, Bei Chenguang couldn't find the "Desolate Ancient Domain" from which you originated, so he suspects it's a "lost" Yuan Tian Domain, perhaps wandering on the outer edge of the Yuan Tian Realm.]

"Fortunately, this kid knows how to figure things out on his own and patched the loopholes himself."

"That saves me the trouble of making things up again."

[The following section introduces the path to transcendence beyond the Fifth Realm.]

[You already know about the fifth realm; it's about fully comprehending a transcendent system.]

Upon reaching the perfection of the Fifth Realm, this understanding is sublimated and will condense into a "Dao Seal." Once the Dao Seal is formed, it signifies that one has reached the Sixth Realm.

The Six Realms have many other names: Ten-Life Legend (representing a basic lifespan of 100,000 years, or ten "century"), Emperor, Half-Immortal, Quasi-God.

This realm is a stage of "Taoist transformation/divine transformation/immortal transformation/transformation".

Each cultivation system is equivalent to a "law" or "way," but these laws conflict with each other, preventing cultivators from simultaneously practicing multiple systems.

"I understand the rejection of Dao traces."

However, upon reaching the sixth realm, one can separate this condensed Dao Seal, absorbing the person's cultivation level and the Dao Seal into their life core, and transforming their external body into a purely mortal without cultivation, allowing them to cultivate other systems.

[This external body is newly created; even if it is damaged, it will not affect the original body's full-fledged appearance upon its return.]

During the reconstruction process, since the previous system had become a complete Dao seal, it would not conflict with the newly constructed system.

Furthermore, in this newly constructed system, in addition to inheriting the Holy Body after multiple evolutions, one can also borrow the power of the Dao Seal, thus enabling the use of multiple systemic methods—because the Dao Seal does not conflict with other systems.

[It's just that the current cultivation system is at a certain realm, so we can only borrow the techniques corresponding to that realm from the Dao Seal system.]

This method of rebuilding is called reincarnation; it completely preserves memories, only the cultivation level drops.

If this incarnation is damaged, the Dao Seals will become unstable. It will take several thousand years for each Dao Seal to recover before the next incarnation can be created.

In the central region of the Yuantian Realm, people generally refer to the different levels of Six Realms experts not as "how many Dao Seals," but rather as "how many Heavens."

[Bei Chenguang has now reached the sixth level of the Heavenly Realm. He could have cultivated many more systems, but the different systems must resonate with each other in order to advance to the seventh realm as quickly as possible.]

[If you choose your Dao Seal haphazardly, you might end up having to choose from hundreds or even thousands of systems to advance.]

[The Seventh Realm – also known as the Realm of True Immortals and Gods, but collectively referred to as the Lord of the Spring and Autumn Period.]

[Because this realm truly transcends the limitations of time, there is no record of a Spring and Autumn Period ruler ever dying in the Yuantian Realm. The oldest known living Spring and Autumn Period ruler, as far as Beichenguang is concerned, has survived from 30 billion years ago to the present day.]

How many seals are needed to "complete" and form the Dao fruit?

[Bei Chenguang stated that he wasn't entirely sure either, but normally it would require at least 36 Dao Seals, forming one-tenth of a cycle.]

[Cultivating multiple systems again seems simple, but it is actually very difficult. Although theoretically, a top genius can reach the sixth realm at the age of a thousand and live for 100,000 years, continuing to cultivate other systems will only make it faster. Even if the speed does not increase at all, 100,000 years is enough to complete 100 systems.]

[Furthermore, as one's cultivation level increases, reaching the tenth or one hundredth level, lifespan will definitely increase, so accumulating hundreds of systems in the future will not be a problem.]

But that's not the case.

Because different systems truly depend on talent; just like some people excel in mathematics, others in literature... it's impossible for anyone to have perfect aptitude in every area!

Some people might only need 100 years to achieve the leap from zero to forming a Dao Seal in one system, but switching to another system could take ten thousand or even a hundred thousand years!

As one comprehends more and more systems simultaneously, the resulting cognitive obstacles also become increasingly thick.

[If someone who has only ever played table tennis suddenly sees a soccer ball, all they'll think about is getting a bigger paddle to hit it.]

[A person who has only participated in various formal competitions could not possibly imagine that he must kill the referee to win a match on South Korea's home turf.]