The Taiyin Human Emperor and the Sun Saint Emperor quickly left the Divine Domain with Zhou Tong's scriptures, and both of them returned to the Ziwei Star Domain, which was their hometown.

"You really don't want to go to the Fairy Realm?" After the two Holy Emperors left, Yan Ruyu asked.

"Of course I will go to the fairy realm to have a look, but this world still needs to be taken care of." Zhou Tong shook his head and said, "Some things must be arranged to prevent any changes in this world in the future." ”

In the original book, Ye Fan basically abandoned this world.

Whether it was Ye Fan, the Ruthless Emperor or the Beginningless Emperor, in fact, the time to study the immortal method was not enough, and they all took the immortal elixir in their lives.

When Ye Fan went to the Immortal Realm, he took away all the immortal elixirs in the entire world, which could be regarded as directly reducing most of the time for the later emperors to study the immortal method and go to the Red Dust Immortal.

Originally, the road of the Red Dust Immortal was the ultimate long jump in every life, and Ye Fan and the others also took away one of the pedals. It can be said that this change of events almost made it impossible for future generations to have such people.

And after he left this world, he never came back, so this led to the fact that this world in the later world was completely reduced to a testing ground for an unknown immortal emperor, constantly reincarnated.

Zhou Tong didn't want such a thing to happen in the future, so he needed to make some arrangements.

Although once the unknown Immortal Emperor makes a move, Taiyin and Sun will definitely not be able to stop it, but the stronger this world is, even the Immortal Emperor will definitely have to expend more strength, and it will be more difficult to quietly complete this reincarnation arrangement.

"However, there is still one thing left before this world truly grows and completes, and that is the World Tree!" Zhou Tong's eyes swept and looked directly at the World Tree inside his Ten Cave Heavenly God Ring.

The World Tree is difficult to cultivate, and the World Tree in Zhou Tong's hand is also much easier to cultivate because it was originally degraded from the World Tree; But the real World Tree often needs to grow naturally, little by little.

In addition to the natural metamorphosis, the easiest way to re-cultivate a World Tree is to find a real World Tree, and then use this tree as a guide to cultivate a child little by little; In fact, the so-called Hedao Immortal Seed World Tree seedlings were cultivated in this way.

Because this cultivation method involves the most fundamental World Tree in this realm, even at the peak of the Immortal Realm, the World Tree seedlings are the top Harmony Seeds. It is impossible for people without a big background to get it.

In fact, this is how the World Tree of the Ten Crowns of the Ancient Era was cultivated. In the Immortal Ancient Era, the Immortal King of the Nine Heavens and Ten Earths used the World Tree of his own realm as a guide and gave birth to a seedling of the World Tree, which was finally obtained by the Ten Crowns.

Zhou Tong is doing this kind of thing now, he is now cultivating the descendant of a World Tree in a secret method. It's just that the World Tree he cultivated was not for people to be a Hedao Immortal Seed, nor for people to be a magic weapon, but to cultivate a World Tree for the outside world.

It can be seen that in the World Tree, a seed has begun to be born. This seed is slowly growing by absorbing some of the laws of the World Tree.

"If you are not mistaken, it will take at least 100,000 or even 200,000 years for this seed to really be cultivated." Zhou Tong said secretly in his heart, "But I don't lack time now, I can afford to wait." ”

It takes more than 100,000 or 200,000 years to cultivate a World Tree seedling, and you can imagine the preciousness of this kind of thing. Moreover, the World Tree cannot be cultivated continuously, after cultivating a child from the main body of the World Tree, the main body of the World Tree will need to be cultivated for at least a million years before it can be cultivated again, otherwise the World Tree will be damaged.

"I don't know what the World Tree born in the Inner World of the Blue Emperor is, could it be a lotus flower?" Zhou Tong said silently in his heart.

At the same time, he looked to the side of the emperor.

As a test subject of the new experimental system, the Emperor also has a quasi-world tree in his body, but the emperor is still too weak, and that world tree will maintain the word "quasi" for a long time.

"Actually, isn't there no way to make the Emperor Prince the second Immortal King?" Suddenly, a thought appeared in Zhou Tong's heart, maybe there was a way to make the prince directly become an immortal king in a short period of time?

Although the Emperor Zi is an experimental subject, he is also an existence that has survived the Creation Tribulation, and the Creation Tribulation he has crossed is second only to Zhou Tong, and even stronger than the Blue Emperor's Tribulation, plus there is a quasi-world tree in his body.

With such good conditions, if you push him a little behind your back, you may really be able to do it.

"However, as for how to push him, it needs to be finalized." Zhou Tong didn't think about how to push it for a while.

The easiest way is actually like the Emperor of the Desolate Heaven when he completed the Nine Heavens and Ten Earths, directly kill a group of True Immortals or Quasi-Immortal Kings, and directly use their Dao and Origin to repair the world.

It's just that although the inner world of the Emperor is complete, the origin is not so strong, so I am afraid that there are a lot of true immortals or quasi-immortal kings that need to be killed.

And this method also has a drawback, that is, the World Tree cultivated by killing, if there are a large number of them, I am afraid that they will enter the Demon Path, which is not the method of the right path.

"However, the matter of cultivation still needs to be talked about slowly, so I'd better go and get the Hedao flower first!" After pondering for a while, Zhou Tong made up his mind.

In any case, if you want to integrate the World Tree into this world, it is the easiest way to directly use the Hop Blossom as a guide, although the World Tree seedlings have not yet taken shape, but it is not wrong to hold the Hop Flower in your hand first.

Zhou Tong's huge divine sense swept away, and he quickly sensed the existence of the Nine Dragons Coffin, and his expression immediately moved, crossed the endless star field, and descended on a barren planet.

Here, there is a five-colored altar, and next to the altar lie nine huge black dragon bodies.

Nine Dragons need energy to pull the coffin and set off, and if this barren planet wants to accumulate enough energy for its actions, I am afraid that the unit of time is 10,000 years.

The ancient coffin is quaint, and I don't know how many years have passed.

Zhou Tong descended on the coffin, sat quietly on the coffin, listened attentively to the scriptures in the coffin, and a trace of discoloration appeared on his face.

Zhou Tong thought that he had thoroughly comprehended the hundreds of words of scripture before, but now that he listened to it again in his immortal king realm, he suddenly had a different feeling.

This scripture is ostensibly about the construction and deduction of the fairy realm, but now after careful deduction, he suddenly found that there is a deeper meaning in it.

This mystery ...... Reincarnation? Zhou Tong pondered for a while, and there was a vague feeling in his heart, but he didn't feel right, not a complete mystery.

"The scriptures left over after the Emperor of the Wild Heaven became an Immortal Emperor, if you want to reach a deeper stage, I am afraid that the only way to become a quasi-Immortal Emperor is to become a quasi-Immortal Emperor." Sitting here for three whole years, Zhou Tong finally shook his head, being able to comprehend a trace of the mystery of "reincarnation" is already considered to be his rebellion, but it is impossible to comprehend more things.

"Lack of strength, nothing is useless!" Zhou Tong finally gave up on comprehending these things, and directly opened the innermost copper pavilion, and suddenly the chaos was surging, and the fairy light was overflowing.

The innermost is a vast world, with immortal light circulating and abundant longevity, which can be called a small immortal domain.

However, Zhou Tong doesn't care much about this world, because when it comes to quality, this world is not as good as his own Ten Cave Heavenly God Ring World. All he cared about was the Harmony Flower in it.

With a sweep of his divine sense, he directly brought out the Hedao Flower, and then left the Nine Dragons directly.