The reason that made Yun Yi suddenly realize was Tai Chi fingers.

Tai Chi refers to the front and back, and Yun Yi combines the illusion in the first layer of the Forbidden Tower to get that everything has two sides.

Tai Chi refers to the use of soul qi to draw positive and negative, soul qi is the root of this combat skill, and positive and negative are only the form of expression. Because it is a combat skill, the form of expression is fixed, positive is positive, and negative is negative.

On the first floor of the Forbidden Tower, the world is illusory, but Yunyi is real, one true and one false. But what distinguishes the two is not Soul Qi, Yun Yi thinks it can be expressed in one word.

"Forbidden"

But what is forbidden?

When they entered the tower first, the middle-aged teacher reminded them what the ban was. Now Yunyi feels that he is getting close to the answer.

The second layer of the forbidden tower is cloudy and has been obtained, this layer uses the hourglass as the medium, and uses the indivisibility and independence of time and space to explain what is forbidden.

Time and space are independent and intimately related to each other, and if there is no sand in the hourglass, how can we know how much time has passed, and if there is sand but there is no hourglass, it is impossible to calculate time. The sand and the empty hourglass are independent in their own right, each with a different function, but it is more perfect when combined.

Combined with Tai Chi fingers and two fingers to draw life and death. Soul Qi divides life and death. But if there is no soul qi, is there no life and death? It is precisely because there is a clear boundary that there is a distinction between life and death.

Life and death are still expressions, if there is no boundary, if the two are not opposites, then the living may not be alive, and the dead may not die, but they are just a different way of being.

With the help of the hourglass, combined with the Tai Chi Life and Death Finger, Yun Yi once again had an understanding of the ethereal forbidden, it existed, but it was diverse.

It can be like a glue, combining two different things into one. It can also be like a sharp blade, dividing the same thing into two.

And in this second layer, the sand and leakage, which are independent of reality, are "forbidden" to separate them from reality.

Yunyi not only solved the puzzle, but also further understood what "forbidden" is.

The question at hand is how to break out of this state and open the way to the third layer.

But this is no longer difficult for Yun Yi, Yun Yi is now really aware of the various precautions that the first ancestor warned him to use Tai Chi Finger, as well as its extraordinary.

Tai Chi refers to the same origin as the "forbidden" in the forbidden tower, and it is in the same vein.

Each finger of the Tai Chi Finger is ever-changing, Yun Yi had only practiced a little bit before, but after practicing in the Forbidden Tower, he had a deeper understanding of the Tai Chi Finger.

Although his comprehension of "forbidden" was only scratching the surface, Yunyi decided to try the point he had realized with the help of Tai Chi Fingers.

Cultivation was running, and the blue light was shining at his fingertips, and there was a terrifying fluctuation, ready to go.

"Heads and tails!"

As soon as he pointed out, the second floor, which had been closed, seemed to open a window, and the wind poured in. Yun Yi continued to release his soul qi, which contained a little bit of the "forbidden" he comprehended.

The sand that was always flowing, as if it had been pulled at this time, was no longer in its original state, and under Yunyi's "life and death fingers", it completely collapsed, and that bit of sand was scattered on the ground.

Yun Yi took a long breath, it seems that he thought well, the ban and Tai Chi fingers are related, and they should be of the same origin.

Yun Yi watched the door to the third floor appear, and walked up with anticipation in his eyes, he was looking forward to what the third floor would have.

The third floor is empty, with only one painting painted on the ground. The painting is circular, and the whole is gray, as if it has not been finished.

Yun Yi stared at the ground, and he knew that the key was in this picture.

Sure enough, as he stared intently, the picture that had been unmoving began to fluctuate.

The gray in the picture is chaotic, spreading out and changing at the same time. Gray separates two colors, one black and one white.

"It's a Taiji diagram! But why is it so hazy, could it be that it is a Taiji diagram before it was formed?"

"This is the chaotic yin-yang diagram, and the Taiji diagram is just a branch of its evolution. It's older than the Taiji diagram. The words of the Ancestor rang in Yun Yi's ears.

Yunyi suddenly brightened, it turned out to be like this.

Chaos is the most primitive energy substance, and at this time yin and yang are separated. Yin and Yang are divided into four elephants, and the four elephants are divided into eight trigrams, and thousands of changes are in them.

"Everything in heaven and earth comes from chaos, chaos is the beginning of all things, this is the rule of heaven and earth, and all changes cannot escape this category. Yunyi muttered to himself.

"But how did yin and yang come into being? It was a mess. ”

Yun Yi stared at the painting on the ground, and suddenly he realized that the simplest but neglected place was that there was a dividing line between yin and yang.

"The yin and yang line separates the two and creates different areas. ”

Yun Yi thought of the Yin and Yang Realm again, where there was an incredible Yin and Yang Storm, and the energy was terrifying. This made the Nine Netherworld and the Nine Heavenly Yang Realms separate from each other, forming different worlds that could not be touched together.

Isn't this the root of the yin-yang diagram?

Yunyi thought of truth and falsehood, positive and negative, fire and water. Everything in this world contains the truth of Tai Chi, and Tai Chi is the most primitive mystery.

In order to incarnate all things in heaven and earth, there must be a divisible power of chaos, which comes from chaos itself, which can be said to be its divine form. Without it, yin and yang would not be formed, and the myriad changes that follow.

Yun Yi inferred this way himself, he didn't know if it was absolutely correct, but it should be very close.

Now Yunyi finally knows what "forbidden" is.

It is a power that has evolved from the Chaos Godform, and it can be used to divide all things and fuse them into a furnace.

It cannot be the true god form of Chaos, which has long since turned into all things, and its god form has created the spirituality of all things.

The god form is a human being, a soul race, even a speck of dust, it is everywhere, it is omnipotent.

Yun Yi looked at the chaotic yin and yang diagram on the ground, and finally suddenly brightened, and he felt relaxed.

Yun Yi stretched out his index finger and drew out the third finger, the yin and yang fingers. There was no bright light on the hand, as if the fingers were stretched out normally, but the yin and yang diagram on the ground had changed. The god-shaped yin and yang line in the middle suddenly shone brightly, and then appeared from the painting in a flash and entered Yun Yi's eyebrows.

Feeling a coolness in the center of his eyebrows, Yun Yi turned into a mirror with his soul qi, and there was a gray line at the center of his eyebrows, the color was the same as the chaos before the yin and yang. The lines didn't show up all the time, they only existed for a while and then disappeared.

But Yun Yi knew that it was only temporarily hidden, and there would be a time to trigger it to appear in the future.

And without the yin-yang diagram of the god-shape, the yin and yang began to merge, and finally mixed into gray, chaotic.

Since then, Yun Yi has comprehended the forbidden, which is another change in the form of the Chaos God.

Yun Yi came back to his senses, and the path to the fourth layer appeared directly at his feet. Without hesitation, he ascended to the fourth floor.

As soon as he stepped into the fourth layer, Yun Yi felt a tragic aura of destruction. The sky was gray like purgatory, and when the thunder fell, the intense energy destroyed the earth, the ground cracked, and the mountains collapsed. Heavenly fire appeared in the void, and it fell from the sky, burning everywhere.

The sea flows backwards and magma gushes out. It's a lifeless world, and it's just destruction.

This environment made Yunyi instinctively feel danger, even fear.

Thunder and lightning, heavenly fire, magma, these sunnyest things made Yunyi hold back and not tremble. The creatures of the Nine Nether Yin belong to Yin, and these Yang things are their nemesis.

Yun Yi saw a door at the end of the sky, which was the passage to the fifth layer. And at the moment, this kind of scene cannot be avoided, and it must be persevered to the end, because cultivation is cruel.

Taking the first step, Yun Yi really felt the danger here, the wind blowing in his face was like a sharp blade, easily cutting his body, this pain penetrated deep into the soul, and he didn't want to have a second time if he paid for it once.

The ubiquitous wind blade cut through the body, and Yun Yi kept running and cultivating to resist. One knife, two knives, more pain was inflicted on Yun Yi's body, making him drowsy.

At the same time, the fierce sea water also continued to impact Yunyi, the force is indescribable, the power of a sea of water, who can imagine! If it is not the body of the soul, otherwise it will definitely be washed to pieces.

The pain of all is not terrible, what is terrible is the loss of fighting spirit. Yun Yi persevered, and slowly adapted to the tearing of the wind and the impact of the sea, and his speed of progress also increased.

But this was only the beginning, the scorching heavenly fire scorched Yun Yi's soul qi. Preventing his cultivation from recovering, the magma on the ground spread, and some rushed out of the ground and turned into a rain of fire.

Yun Yi walked in the magma, and if it weren't for the mysterious awakening, he would really dissipate here.

Yun Yi ran the Awakening Chapter, which made him sober a lot, and only by staying awake could he figure out a way to get through here.

Yun Yi walked very hard, and the closer he got to the door, the more powerful those heavenly fires and wind blades became.

This is a tempering, to temper Yunyi's natal soul to be tough and indestructible. In this cruel environment, the will to fight hidden in the depths of the natal soul is also constantly stimulated, so that Yunyi will not give up easily and never give up.

Yunyi didn't know how long he had walked or how far he had walked, he had tried to change this place with his Tai Chi fingers and the little "forbidden" he had comprehended, but everything was in vain, only patience and perseverance.

The thunder and lightning here are the most terrifying, and all the yin and evil things are the most afraid of thunder and lightning, which is the most difficult level for Yunyi. Although the thunder and lightning that slashed into Yun Yi's body were small, they were very powerful, and several times he almost lost his soul.

Fortunately, the automatic operation of the Awakening Chapter has kept him awake and resisted all harm with his soul qi.

However, this also has benefits, his soul qi is constantly refined, becoming tough, condensed, and majestic.

Yunyi does not give up, does not give up, and has undergone cruel trials in a harsh environment. Gradually, he also got used to it, and in the end, those thunderbolts, sky fires, magma, etc. couldn't hurt him, and he walked on the ground as fast as he could.

The door of the fifth layer is also getting closer and closer, and with all its strength, 100 meters has reached a speed of two seconds. The distant door seemed to be close as well, and finally Yun Yi stepped out of the land of destruction and rushed to the fifth layer.

Coming out of the passage, I officially entered the fifth floor, and at the entrance of the fifth floor there was a stone tablet with three characters carved on it.

"Forbidden Pavilion"

"Is it forbidden to cultivate here?" Yun Yi muttered to himself.

"Naturally not, you can cultivate here, but you can't take it out. Suddenly, a voice sounded, and then a wisp of green smoke appeared in front of Yun Yi, the green smoke squirmed, and then transformed into an old man.

Yun Yi was on guard and asked, "May I ask why the senior said this?"

"You're good, you're the first to reach the fifth floor. As for this, it is the most valuable asset of the entire college. Do you see the many bookshelves in there?" the old man turned to the side and pointed inside.

The fifth floor, which is not big from the outside, did not think that there would be a hole in the sky after all went in, and the rows of bookshelves could not be seen at all.

"This contains all the powerful exercises and combat skills since the formation of the Nine Netherworlds, as well as many genius earth treasures and weapons. "This is a sacred place for the monks. But you can't take the stuff out of here. Even if you succeed in cultivating inside, you will still forget it when you go out. ”

"Why is that?" Yun Yi was puzzled.

"Because most of them are forbidden laws and forbidden techniques, this is the Forbidden Cultivation Pavilion, and all exercises and combat techniques are forbidden to be cultivated, do you know the meaning of its existence?" asked the old man.

Yun Yi shook his head, how could he be clear. But he also has his own thoughts in his heart, if they are all forbidden arts, then they should be burned. But there must be a reason why they are kept here anyway.