Nie Fan was really curious about what important things would call them, the people of the mortal realm, over, and it seemed to be a relatively important matter.

It is no exaggeration to say that although Nie Fan is the strongest among the children of the Nie family in this current session, there are as many people in the Nie family as strong as them or even stronger. Don't look at them, they seem to be very powerful in the clan comparison, in fact, they are still just a few inconsequential pawns in the entire Nie family.

Although Nie Fan has shown the qualifications and potential to be comparable to the strongest ancestor of the Nie family thousands of years ago, it is only potential, and perhaps the family leaders will attach great importance to him. However, attaching importance to it, Nie Fan's specific status in the entire Nie family has not changed.

So, in this case, why did the family summon them over, and it seemed to be a very solemn kind.

"I'm sure you're wondering why the family called you over! Don't worry, listen to me slowly! Before I talk about things, I need to tell you something you don't know. Subsequently, Nie Batian, who was sitting at the top, told Nie Fan and the others a secret that was monopolized by the top groups in the mainland

With Nie Batian's story, Nie Fan and the others understood why they had summoned them so solemnly today, and it was a very secret summoning.

Immediately, Nie Fan and the others also shot something called excitement in their eyes.

It turned out that what Nie Batian said to them involved some secrets in the Yanlong Continent, and these secret civilians generally don't know about it, only the top forces on the continent and some of the secondary forces with these secrets know.

In the Yanlong Continent, there are times when the environment of a certain place changes due to various reasons, such as the battle of top powers, the birth of real demons, the condensation of spiritual energy from heaven and earth, the fall of meteors outside the sky, or the abnormal change of the spiritual energy center in nature.

Then, after some unknown changes, a natural formation will be formed to besiege and hide this place, and the contents of it will be as if they have been erased from this world, so that people cannot find them.

This is called the secret realm of heaven and earth.

There are many kinds of secret realms of heaven and earth. For example, the secret realm generated by the top power of the continent is called the Secret Realm of War Martial Arts. In it, people can watch the incomplete images of the powerful battles at that time, and learn from the martial arts of the great powers, and confirm what they have learned and cultivated, which is the best inheritance secret realm for the family and sect.

However, it is not common for the existence of great energy levels to fight each other, and the fights are all because of some conflicts of interest, and the most likely place for conflicts of interest between great powers is still in the secret realm, not to mention that not all the battles of the great power level can form a secret realm, and many other conditions are needed to form it.

This also caused the scarcity of top-notch battle martial arts secret realms, and the Nie family only got a battle martial secret realm by that ancestor thousands of years ago, and it really stood at the top of the Yanlong Continent, with an orderly inheritance, and there was almost no possibility of decline.

And the secret realm formed by the birth of the true demonic demon born by nature is called the secret realm of the heavenly demon. This is the holy realm of the demon clan, and it is the holy place of the demon clan's cultivation, in which the natural aura of heaven and earth emitted when the big demon is conceived is of great benefit to the cultivation of the demon clan.

This Heavenly Demon Secret Realm is different from the Battle Martial Secret Realm, because it is the breeding place of the Great Demon, so after the Great Demon is born, he will naturally be able to find it, know its location and how to enter. It's not like a secret book that was formed by accident like the Battle Martial Secret Realm, and even the power that created the Battle Martial Secret Realm itself can't be known. Of course, the same thing is that this kind of secret realm is the same as the battle martial secret realm, and it is very rare and difficult to find for various reasons.

The most famous of the Heavenly Demon Secret Realm is the Huaguo Mountain Secret Realm. According to legend, it is the first Heavenly Demon Secret Realm since the opening of the sky, and the Monkey King Sun Wukong is the first immortal realm in this world. The current secret realm of Huaguo Mountain still exists, as one of the habitats of the demon race, it is an existence that is not weaker than the top forces of the human race.

The most popular in the secret realm of heaven and earth is the treasure secret realm formed by the condensation of spiritual energy and the condensation of heavy spiritual energy by the treasures of heaven and earth. This kind of secret realm, as its name suggests, is full of treasures, and there are all kinds of heavenly and earthly treasures. Elixir to promote cultivation, spiritual materials to cleanse the body, and all kinds of messy but useful spiritual objects.

It is even rumored that there are spiritual objects in the top treasure secret realm that can promote the physical body to the immortal realm, but unfortunately no one has seen it, or those who have seen it have not said it. If the wealth is not exposed, and the spiritual things that can make the physical body break through the immortal are exposed, it will be strange that the top powerhouses on the continent who are suffering from not being able to break through are not crazy to chase after them.

Then there is the Outer Secret Realm formed by the fall of an extraterrestrial meteorite. In this kind of secret realm, most of them are extraterritorial strange things that come with meteorites outside the sky, and the most of them are all kinds of strange fires outside the sky, which can be used for alchemy and refining, and are very popular with alchemists and refiners. At the same time, there will also be a peculiar extraterritorial star core with a certain chance of appearing in the secret realm outside the sky, the biggest function of this star core is to enable the owner to sense the Zhou Tian stars when wearing them, improve the perception of artistic conception and subtly change the body, optimize qualifications.

Finally, there is the secret and most magical secret realm, the secret realm formed by the abnormal transformation of the natural aura center - the Tianyuan Secret Realm.

The Tian Yuan Secret Realm is the rarest of all the secret realms, and it is also the most magical.

The Tian Yuan Secret Realm has all the effects that all other secret realms have. You can find all kinds of treasures in the Tian Yuan Secret Realm, you can also find the Extraterrestrial Core in the Tian Yuan Secret Realm, you can also find all kinds of incomplete martial arts images in it, and you can even find the most mysterious Heavenly Demon Jade in the Heavenly Demon Secret Realm.

And the most different thing about the Tian Yuan Secret Realm and other major secret realms is that the Tian Yuan Secret Realm is divided into levels, the largest Tian Yuan Secret Realm can be entered by the powerhouses of the Immortal Realm, and the smallest Tian Yuan Secret Realm can only be entered by cultivators of the mortal realm. The things in the Tian Yuan Secret Realm are also very different according to their size, and the Tian Yuan Secret Realm that can be allowed to enter the Tian Yuan Secret Realm has things that can be used by people of what realm.

This time, Nie Batian asked Nie Fan and them to come over because it was related to the Tianyuan Secret Realm, to be precise, it was related to a small Tianyuan Secret Realm. The name of this Tianyuan Secret Realm is called Yuan Chu Secret Realm, and it is located in Shouyang Mountain, the center of the Yanlong Continent. As the central point of the Yanlong Continent, although Shouyang Mountain is not as good as some of the high mountains in the 100,000 mountains of the Southern Barbarians, it has a majesty that the rest of the mountains do not have, and it is the most of the 10,000 mountains on the continent.

The formation of the Tian Yuan Secret Realm was due to the abnormal transformation of the Heaven and Earth Spiritual Qi Center, so the size of the Tian Yuan Secret Realm also depends on the region in which it was formed.

It stands to reason that the Tian Yuan Secret Realm formed in such a place as Shouyang Mountain, if not the top-level Tian Yuan Secret Realm that can accommodate the existence of the Immortal Realm, is at least second-level. It's a pity that it is the worst Tian Yuan Secret Realm that can only accommodate cultivators from the Transcendent Realm, and it is also the only Tian Yuan Secret Realm on this continent that can only accommodate cultivators below the Mortal Realm.

Speaking of which, everyone must be able to understand it.

That's right, this opening of the Yuan Chu Secret Realm is the reason why Nie Batian summoned Nie Fan and the others here.