The scholar gave Li Chen nearly a hundred years to perfect the so-called dragon boat, that is, the carrier that brought them into the formation.

In terms of the understanding and integration of the formations alone, this time is actually too long for Li Chen, because with his attainments, these formations in the primeval period rarely require him to spend too much time to study, but to achieve the extreme of this dragon boat formation, this time seems too short and compact.

Because if one thing wants to be done to the extreme, it is obviously not enough to just inherit the formation of outsiders, what he really needs to do is innovation.

The difficulty of innovating this thing is that no one can be sure of the correctness of this thing until you finish it, even if this person is Li Chen.

Therefore, in just three months, Li Chen has already understood all the formations, and at least he can close his eyes and depict every line in them.

Next, it is the real big project, and Li Chen needs to retreat to complete this matter.

Before the retreat, Li Chen met with Wang Tingtaiyi and others, and only said that he had a very important thing to do, but it was a pity that he couldn't tell them for the time being.

Everyone understands very well, even if Hongxue has a trace of dissatisfaction, she didn't make a sound, and at this time, she also discovered the change in her personality, in the past, she never seemed to care about these so-called details, but would feel troublesome, and now I don't know what happened to her.

Before the retreat, Xuan Li found Li Chen alone, "Your Highness, I know that you have a priority for everything in your heart, but I still have one thing to tell Your Highness, although we are now in the primeval world, we should not forget when we were born, maybe we can return to the future after hundreds of thousands of years from today, but I am afraid that the world at that time is not what we knew it was then."

He said it earnestly, all because he himself had a certain experience in time regression, and there was even a Dharma body named the Buddha of the past, but he was worried that Li Chen was bewitched by scholars because he didn't know enough about time regression.

Li Chen's heart was also shocked because of these words, and he bowed slightly.

When he saw the scholar again, Li Chen simply asked about this matter directly, and said: "I am willing to help you today, you should understand the reason why I did this, just because there is great righteousness in the world, no matter which path it is, after all, it is to open up the ups and downs that the world cannot cross before us, but I also have my own things to do, therefore, after I complete the dragon boat you need, please send me back, for me, even if I have the heart to enter the space channel after the formation to find out, it will be after the matter in the future life is resolved."

The scholar said calmly, "That's nature."

Only then did Li Chen begin to retreat with peace of mind and carefully study the formation.

The formation is a bit peculiar, his earliest birth has nothing to do with cultivation, it is actually derived from mortals in the battle of dynasties, in order to make the soldiers achieve more powerful combat effectiveness in a limited number of people, so according to different arrangements and times, as well as according to different types of troops mixed placement.

The earliest formation in the world, even before the primeval times, the alien beasts at that time had not yet grown, and the human race's development of the cultivation method had not reached the level where everyone could practice.

In this case, the first two dynasties of the human race began to compete, one of which was only half of the strength of the other, but its king studied the formation day and night, and each station had a fixed name, such as Chen, Kun and so on.

In the end, the two divisions fought in Nagano, and the division of the formation won more with less, unifying the upper realm, and at that time, there were many more formation mages in the world, just to rely on the formation to arrange the troops.

Until thousands of years later.

There are more and more cultivators in the world, and the role that this kind of military formation can play is becoming more and more limited, so it is gradually banned, and only a very small number of practitioners will delve into it, and some people have also put forward the saying that the formation can also be used in practice, but people soon found that no matter what kind of formation, it needs to rely on a certain cultivation realm to complete, and the larger the formation, the more burdensome it is.

In such an atmosphere, the formation is getting weaker and weaker.

Fortunately, Li Chen now has enough energy and enough cultivation realm to accomplish this.