After leaving Demon Heaven City, Lei Xiaotian once again let Xiang Yuan turn into his body, and he sat on Xiang Yuan's back with the ancient dragon ape, fox Jiao'er, and Nangong Ling, and let Xiang Yuan fly in the sky and fly towards the beast clan.

On the way, Lei Xiaotian took out the book given by Nangong Shocking and began to study the introduction of the mysteries of the laws of heaven and earth, although Lei Xiaotian had comprehended the mysteries of the laws of heaven and earth in three different systems, but for how many mysteries of the laws of heaven and earth there were, Lei Xiaotian had no concept in his heart, and when he saw that Nangong Jingtian had an introduction to the mysteries of the laws of heaven and earth, which made Lei Xiaotian sigh with emotion, it was still a big force!

Lei Xiaotian opened the book, Lei Xiaotian began to read the content of the book carefully, the more he looked at Lei Xiaotian, the more frightened he became, Lei Xiaotian knew that he really owed the Demon Tianmen a great favor this time, and at the same time, Lei Xiaotian also felt the vastness of the mysteries of the laws of heaven and earth, according to the records in the book, this book is the powerhouse of the previous generations of Doushen and Dou Sheng-level powerhouses in the Demon Tianmen, and it took a long time to summarize it, some of which were comprehended by the strong people in the Demon Tianmen, and some were written down by the strong men of the Demon Tianmen after the Dou Shengs or the Fighting God level powerhouses of other forces were used, and for Lei Xiaotian now, it is how many heaven-level Dou Qi Gong methods, is not as valuable as this book, and for Lei Xiaotian, it is not an exaggeration to say that this book is invaluable.

Recorded in this book, the known mysteries of the laws of heaven and earth in the earth system are: the mysteries of the laws of the elements of the earth, the mysteries of the laws of earth movement, the mysteries of the laws of geocentric magnetism, the mysteries of the laws of thickness, the mysteries of the laws of earth pulsation, and the mysteries of the laws of the power of life.

And the mysteries of the laws of heaven and earth of the fire system, there are seven kinds of mysteries recorded in this book, such as the mysteries of the laws of the elements of fire, the mysteries of the laws of fire, the mysteries of the laws of smelting space, the mysteries of the laws of explosion, the mysteries of the laws of erosion, and the mysteries of the laws of the power of flames.

Looking back, this book also records in turn the mysteries of the laws of heaven and earth in different systems such as water, thunder, light, darkness, wind, metal, wood, space, and death, among which the laws of heaven and earth of water attributes are: the mysteries of the laws of the elements of water, the mysteries of the laws of water, the mysteries of the laws of water bodies, the mysteries of the laws of ice, the mysteries of the psychedelic laws of fog, the mysteries of the laws of roundness, and the mysteries of the tenacity of ice.

The laws of heaven and earth of the wind attribute are recorded in this book: the mystery of the law of the element of wind, the mystery of the law of wind movement, the mystery of the law of doppelganger, the mystery of the law of speed, the mystery of the law of sound waves, the mystery of the law of wind power, and the mystery of the law of the extreme wall of the wind.

The mysteries of the laws of heaven and earth of the thunder system, there are only four kinds of records recorded in the book, and they are not others: the mysteries of the laws of the thunder and lightning elements, the mysteries of the laws of treachery, the mysteries of the laws of thunder and lightning, and the mysteries of the law of bursting, which may also be because there are not many people who can comprehend the mysteries of the laws of the thunder system, so although the Demon Tianmen has been collecting and sorting out for countless years, they have not learned much.

The next record is the mysteries of the laws of the light system, and according to the collection and sorting of the historical powerhouses of the Demon Heaven Gate, the mysteries of the laws of heaven and earth of the light system recorded are: the mysteries of the laws of the light element, the mysteries of the law of recovery and healing, the mysteries of the law of light illusion, the mystery of the law of speed, and the mystery of the law of purification.

There are six types of mysteries recorded in the book: the mysteries of the law of the dark element, the mysteries of the law of the shadow clone, the mysteries of the laws of corrosion, the mysteries of the laws of evil, the mysteries of the laws of devouring, and the mysteries of the laws of stealth.

There are only four types of mysteries recorded in the book about the laws of heaven and earth of metal, and they are not others: the mysteries of the laws of the elements of gold, the mysteries of the laws of elasticity, the mysteries of the laws of sharpness, and the mysteries of the laws of hardness.

The mysteries of the law of the wood attribute, recorded by the predecessors of the Demon Heaven Gate, are the mysteries of the law of the element of wood, the mysteries of the law of life force, the mysteries of the law of strength, and the mysteries of the law of change.

In the book, it is also written that there are five types of mysteries of the laws of heaven and earth in the space system: the mysteries of the laws of space elements, the mysteries of the laws of space bursting, the mysteries of the laws of space shuttle, the mysteries of the laws of dimensional space, and the mysteries of the laws of space power.

As for the mysteries of the law of death, there are only two mysteries written in this book, that is, the mysteries of the law of summoning of the undead and the mysteries of the law of life deprivation, which may be because there are too few people who can comprehend the mysteries of the law of death!

Of course, among the mysteries of the various laws of the world, in addition to the known mysteries of the laws of heaven and earth introduced above, there are no other mysteries of the laws of heaven and earth that the predecessors of the Demon Heavenly Gate themselves do not know.

After reading this book, Genius Lei Xiao had a relatively clear understanding of his future cultivation, and this book also roughly explained the manifestations of these mysteries of the laws of heaven and earth, such as: The mysteries of the elemental laws of earth, just like the magic of the earth dragon and the rock guardian in the earth magic, which summons elemental combat units.

Lei Xiaotian sat on Xiang Yuan's back, and carefully flipped through the book he got from Nangong Jingtian, while reading, he also referred to his own comprehension, because in the past, Lei Xiaotian could be said to have really advanced in exploration, and there was no direction of cultivation at all, but after reading this book, Lei Xiaotian could clearly feel that the mysteries of the law of speed, the mysteries of the law of trickery, and the mysteries of the law of explosion that he had comprehended had made significant progress.

When Lei Xiaotian finished reading the book, a flash of inspiration suddenly flashed in his mind, and he released an eighth-level spatial magic space split towards the front, and carefully watched the entire process of the space split from the release to the completion of the attack.

After reading this magic attack, Lei Xiaotian suddenly laughed for a while, after laughing, Lei Xiaotian immediately closed his eyes, and began to fall silent in his comprehension, it turned out that after reading this book, after the introduction of the mysteries of the law of space bursting, Lei Xiaotian suddenly felt that there was a spiritual light in his mind, faintly flashing, hazy, so Lei Xiaotian immediately released a piece forward, the eighth-level magic space of the space system was split, Lei Xiaotian wanted to feel how the mystery of this space burst law was through this magicBecause Lei Xiaotian saw from the book that this eighth-level spatial magic space splitting was actually like a simplified version of the mysteries of the law of spatial bursting.

Sure enough, after seeing the eighth-level magic space split, the aura in Lei Xiaotian's mind finally became clear, and then Lei Xiaotian immediately fell into comprehension and began to deduce continuously in his mind.

Seeing that Lei Xiaotian fell into comprehension again, Nangong Ling and Hu Jiao'er glanced at each other and smiled helplessly, and then their faces also showed a trace of pride, and gradually Lei Xiaotian fell completely silent, forgot the time, and completely fell into the comprehension of the laws of heaven and earth.