Qin Tian suspected that if he wanted to get out of the closed room, the key point was still in the Eight Sounds of the Destruction of the World itself.

The World-Destroying Venerable allowed him to obtain the inheritance of the World-Destroying Eight Sounds, so there was no reason to arrange this place as a cage.

The way to get out is probably related to the eight tones of the world!

"I have learned the three tones of the extinction, and the third tone will soon be completed, but I have not succeeded, so it is better to study the fourth tone of the extinction first."

Qin Tian wanted to use the fourth tone of the world to figure out the first three tones in reverse to see if they could change.

The fourth tone is described in the picture and text of "lightning", it is no longer a monosyllabic word, such as do, beep, and hiss, but through the exquisite cooperation of the gang qi and the sound, let the gang qi be powerful, so that the sound wave has supreme power, like lightning and thunder, lightning slashing, thunder rumbling, simple sound waves will produce extremely large terrifying energy!

According to the above description, after learning the fourth sound "lightning flash", the sound wave vibrates violently in the air, which can cause the environment to change, and a very thick lightning bolt appears, directly slashing at the opponent.

"This is different from the three tones before the annihilation, which rely on sound waves to attack people's hearing, and then attack people's minds, making the opponent's mind lose their minds."

"And this fourth lightning flash will make lightning descend from heaven and earth, to put it simply, the sound wave no longer attacks by itself, but unites the gang qi, cooperates with the environment, and produces lightning and thunder to attack the opponent!"

"There is no doubt that this is an upgrade over the first three notes. The first three tones taught me how to make the sound waves work with the gangqi and laid the foundation for this, and the fourth tone must have this foundation to learn. ”

Qin Tian thought silently, wondering what kind of power the fourth, fifth, sixth, and seventh tones were emitting.

These four tones are lightning, ice and snow, wind, and heavy rain, which are different from the first three tones in terms of strength level, these four tones are juxtaposed, the power is the same, and the difficulty of learning is the same.

Therefore, these four tones can be used together, and at the same time there is a violent scene of lightning, thunder, wind, rain and snow, and the opponent will face the attacks of lightning, blizzard, hurricane and heavy rain at the same time in this environment, and it is not an illusion, it is completely a real attack.

As for the final eighth tone, it was called destruction, it was extremely difficult to master, and the required conditions were even more difficult than ascending to the sky, Qin Tian didn't think much about it, because with his current level, he couldn't even read the cultivation method of the eighth tone!

"The fourth tone is lightning lightning, and I can't succeed quickly if I want to attack with lightning and thunder, but I can try to learn it, and then gain some experience, and go back and learn the third tone of the world."

Qin Tian understood that at the moment, the third tone of the world destroying had not yet been completed, but he had just learned it, and the power of the three tones together had not yet reached its peak.

Only when all the three tones are completed, that is, all of them have been practiced to the peak realm, then when combined, the power of the three tones is the greatest.

What he wants is the most powerful world-destroying three tones.

The most powerful world-destroying three tones were issued, which might be able to change the closed room.

At that moment, Qin Tian began to practice according to the cultivation method of the fourth tone of the world.

It seems incredible that the sound waves need to change after combining with the Gang Qi, but the cultivation method is still introduced in more detail, at least there is a feasible method.

Moreover, the Venerable of the World Destroying must have successfully cultivated the Eight Sounds of the World Destroying Sect, which shows that there is a precedent for the success of this set of martial arts.

Qin Tian practiced over and over again, causing the sound waves to change, and sounds echoed everywhere in the room, sometimes sharp, sometimes high-pitched, sometimes low.

Shi Poyun caught a few fish in the waterhole, grilled them, ate them, and filled his stomach, so he went back to the World Destroying Mansion to search it again and look for treasures, but when he came to the outside of the bronze door, he heard a strange sound coming from inside.

The sound was not very loud, after all, it was cut off by the gate, but it was still very clear to hear, and his face immediately changed when he saw through it.

"Sonic power!"

He immediately recognized that what Qin Tian was tinkering with inside was the sound wave gong.

Qin Tian will have a very peculiar sonic skill, the power is much greater than the ordinary sonic skill, he has fought with Qin Tian four times, Qin Tian has performed it at least twice, but he doesn't know what this sonic skill is called.

And now, Qin Tian didn't try to break the door violently, but stayed inside to practice sonic skills, why?

He always felt that something was wrong, so he shouted inside: "Qin Tian, no matter how hard you try, it's useless, you are trapped here, you wait to be trapped to death!" ”

No one answered him.

Qin Tian continued to practice the change of sound waves.

"What do you practice?" Shi Poyun asked through gritted teeth.

He had a bad premonition.

But after not getting Qin Tian's response, Shi Poyun felt even more bottomless in his heart, and he had a strong desire to stop Qin Tian.

No matter what Qin Tian's purpose was, he had to stop it at this critical moment when he was cultivating the Sonic Wave Skill, otherwise Qin Tian might come out of it.

"Qin Tian, I can't let you practice!"

Shi Poyun's grim expression flashed, he went out and returned quickly, picked up a large pile of dead branches, and stacked these dead branches under the copper door, Shi Poyun directly ignited, and the dead branches immediately burned.

This is not enough.

Shi Poyun went out again, this time directly bringing back several dead trees, and after cutting them off, they were thrown directly into the fire, and the fire burst up, almost as high as half a door!

The flames were constantly scorching, and the temperature rose very quickly, and although the copper door was closed so that the smoke could not enter, the temperature was transmitted through the copper door, heating the air inside, just like a heater.

"This stone breaks through the clouds, and it is absolutely amazing."

Qin Tian didn't have time to get angry, the air in the room was heated all the time, the temperature rose quickly, correspondingly, the oxygen consumption rate was also accelerated, he had to hurry up before suffocating, and the third tone of the world would be destroyed.

At this moment, it is impossible to try to break the bronze door by violent means. Shi Poyun was doing bad, and he couldn't break open the bronze door before the air was consumed.

Therefore, the only hope is to gamble, bet that the World-Destroying Venerable has left a secret hand in this room, and relying on the Eight Sounds of the World-Destroying World can uncover this secret hand!

Qin Tian didn't have any pessimistic mood.

Although he was forced to gamble, and the only way was to gamble, and if he lost the bet, he would die, but the situation was like this, either he would die and live, or he would be a good man eighteen years later, and he would be sad and depressed.

Indecision and sentimentality are not for him.

Shi Poyun saw that the fiery red flames were about to swallow the copper gate, even if he was five meters away from the copper gate, he felt very hot, and he was sure that his move would have an effect, and it would accelerate Qin Tian's death.

But that's not enough.

Shi Poyun got a lot of fist-sized stones, and they flew out one by one, all of them hitting the bronze door, making a huge noise.

This noise was very loud, and the purpose was to disturb Qin Tian.

He didn't know what Qin Tian was going to do when he cultivated the sound wave skill, but he would use all kinds of means to stop it.

Set fires, smash stones, he can't kill them, then do whatever he wants outside.

Qin Tian was definitely affected. The ping-pong outside the door did not stop, and the air was getting higher and higher, no matter how good his heart was, he was a little impetuous.

"Shi Poyun is much more despicable than before, this person used to be above the top and disdain to do such indiscriminate things, but it may be that I have become a thorn in his side, and he will not allow me to have the slightest chance to escape."

"I'm a little rare and weird, anyway, I can't stop him from making trouble, so what are you going to do with all the effort and impetuousness? The most important thing is to get inspiration from the fourth note of the destruction of the world, and to learn the third note to the point of completion. ”

Qin Tianxin said.

Since the World-Destroying Venerable has passed on the first three tones of the World-Destroying World, then according to the logic of the World-Destroying Venerable, the person who accepts his inheritance must thoroughly master the first three tones of the World-Destroying World, and he is still a little bit behind, or it may be because of this point that hinders him from going out from here.

At that moment, Qin Tian forced himself to calm down with all his heart, and his attention was completely focused on the study of the fourth tone of the world.

"The sound wave change is so complex that lightning can be generated, although in simple terms, Gang Qi is energy, and sound is a magic hand, which can multiply the power of Gang Qi like magic, and the lightning evolved by pure Gang Qi will be far less than the lightning formed by the fourth tone of the world, but it is very not easy to learn."

"I don't know enough about the changes of sound waves now, so I can't draw inferences, if I am familiar with it, then I can deduce it backwards and find a shortcut to the third tone to reach the realm of Dacheng!"

Qin Tian silently felt that the outside world had nothing to do with him.

The only thing that echoed in the room was the sound wave power he emitted.

Shi Poyun was very surprised. He made such a big fuss and set up so many obstacles, but Qin Tian didn't say a word inside, and he completely regarded himself as nothing!

This state of mind is stronger than him.

Shi Poyun was very jealous and very jealous.

Qin Tian was stronger than him in any aspect, better than him, and he would hate him so much.

"Die, I must seal you this time!"

After Shi Poyun went out, he quickly brought back more dead branches and trees, and put them into the fire, and the red flames erupted directly, engulfing the entire copper door.

"No, according to the cultivation method above, I guided the sound wave to change like this, the efficiency is low, my steps may be wrong, try again."

"No wonder. Before the sound comes out of the throat, in fact, it is necessary to combine the sound with the Gang Qi, to be precise, after the sound is sent out by the vocal cords through the vibration of the muscles of the whole body, it will immediately combine with the Gang Qi, so as to spit out a lightning attack! ”

Qin Tian tried again and again, carefully experiencing and looking for gains and losses, and slowly corrected his problems.

At this moment, he really entered the realm of forgetting things and self in the face of great danger.

He had only one belief in his heart, and that was to comprehend the fourth tone to guide the third tone!