Speaking of formations, formations are to put different elements together and form different effects through different arrangements.

Although it is said that the formation is usually arranged on a certain place or an object through carving. However, the root of the formation is still the element, or the origin. There are no fundamental elements, and even if there is an arrangement, it cannot form a formation.

And the arrangement is the manifestation of the formation. Of course, it cannot be said that the arrangement is not important, and the same elements are arranged in different ways to form different effects.

However, the elements that make up the formation are multiple and diverse, although the origin of this world is only eight kinds of metal, wood, water, fire, earth, light, darkness, and thunder. But the elements that come out of them are endless. Again, the arrangement of formations is varied. This is also the top priority of the formation.

There are many types of elements and the same number of arrangements, which also makes it difficult to study formations.

However, Qin Yu found that the formation and alchemy, and even the refining weapon had something in common.

Alchemy requires medicinal herbs, which are equivalent to the basic elements in the formation. When alchemy, different amounts of herbs need to be put into the alchemy furnace in a certain order, which is equivalent to the arrangement in the formation. Only in this way can the different herbs become a whole, and can they be cultivated into a perfect elixir.

The same is true for refining tools, when refining the embryo, different materials are equivalent to the basic elements in the formation, and different refining orders are equivalent to the arrangement in the formation. And only when they are organically combined is a perfect embryo.

Therefore, alchemy, refining, and formation have the same end. It's just different manifestations of the same truth. And this kind of truth, in Qin Yu's view, is the so-called heaven and earth supreme principle, which is the so-called rule. This is the truth.

And because of this, Qin Yu's interest in alchemy, refining, and formation has greatly increased. He is also convinced that he can achieve a lot. He also firmly believed that by studying these three disciplines, he would definitely be able to better assist his cultivation and better comprehend the rules of heaven and earth.

In the following days, Qin Yu studied the formation while memorizing the medicinal properties of the herbs and the characteristics of the refining materials, while waiting for the arrival of the Heavenly Tribulation. And Xiao Hei is wandering in the wilderness all day long, carrying out his own cultivation.

…………

Time flies quickly, and it has been five months since Qin Yu came to the flood wilderness. In other words, Qin Yu was about to usher in his Forty-Nine Heavenly Tribulation.

For the past few days, Qin Yu has been studying the formation. Although no one taught him, there were some books and jade slips about the formation that Lei Wei kept, and Qin Yu's current formation level was quite good. After all, he had already studied Qimen Dunjia, not to mention that so many memories he had awakened had also given him many hints in formation cultivation.

Therefore, Qin Yu's formation cultivation is really a thousand miles in a day. He also had a lot of knowledge about the medicinal properties, pharmacology, and properties of refining materials, but now all he lacked was experiments.

Of course, Qin Yu carefully read many books on cultivation, and "Star Change" read it from beginning to end, not only did he remember some mantra cultivation methods in his mind, but even some of the insights of Lei Wei's cultivation or the time and place of the tribulation were also in his mind.

For the upcoming Forty-Nine Heavenly Tribulation, Qin Yu is also more and more confident.

On this day, Qin Yu had been sitting quietly cross-legged on the grass by the Bishui Lake, waiting for the catastrophe to come, while Xiao Hei was cultivating with peace of mind on the side and protecting Qin Yu's Dharma.

As the sun sets, the entire flood is reflected red.

The wind rose out of thin air, the giant trees in the surrounding mountains and forests swayed wildly, the leaves also fell in all directions, and the sound of "clicking" giant trees breaking branches also sounded one after another, the sky darkened in an instant, and the weather changed drastically, making Qin Yu and Xiao Hei stop cultivating.

Qin Yu arranged a positive and negative array under him early. Qin Yu didn't have a spiritual weapon now, although he had a middle dantian, but he had to guard against one ten-thousandth of what might exist. And now with this positive and negative array, Qin Yu can ensure that he is foolproof in his escape.

The sky turns dark red, giving a sense of oppression.

A huge vortex appeared in the center of the sky, and the Dao Electric Snake appeared in the dark red sky, and one by one the electric snakes were absorbed by the whirlpool, and in just a moment, the whirlpool stopped spinning and turned into a huge purple cloud. Flashing electric snakes. Everything heralds the coming of the Apocalypse.

Qin Yu stood quietly, motionless. Xiao Hei paid attention to everything around him, and no matter what, he would never allow any demon beasts to come close to disturb him.

The extreme cultivation of the innate external skill master, how strong is the Heavenly Tribulation? It must be known that the power of the Heavenly Tribulation is also different for these different people, and Qin Yu's strength is much stronger than that of the ordinary Innate Great Perfection master, so what is the level of power of the Forty-Nine Heavenly Tribulation?

"The first heavenly thunder is the weakest and the most relaxed." Qin Yu looked up at the clouds, and there was a smile on his face.

He clearly remembered some of Lei Wei's descriptions of the tribulation in "Star Change", and even proposed some methods of the tribulation, Qin Yu decided to use one of the very exaggerated methods of the tribulation in the face of the first heavenly thunder.

The clouds rolled, and low thunder sounded one after another, and the coercion directly covered downward.

"Boom!"

A purple thunderbolt fell directly from the sky at a high speed, and it was angry at Qin Yu, but Qin Yu looked at the purple thunder and lightning with his head up, and he didn't move. His eyes calmly watched the falling purple thunderbolt and let it hit him directly.

I saw that Qin Yu's body was completely wrapped in purple thunder and lightning.

"Haha, cool, happy, happy!"

Qin Yu didn't have any defense, he completely used his body to resist, and his innate external skills were cultivated to the current realm, if he couldn't even resist the first heavenly thunder, then this innate external skills were also cultivated in vain, and it was once said in "Star Change" that borrowing the power of heavenly thunder to temper the body is very beneficial to improving strength. Of course, the power of thunder can't be too strong this day, it's too strong, and Qin Yu's body can't withstand it.

The muscles and bones of the whole body crackled, the thunder and lightning shuttled through the muscle cells, a lot of thunder and lightning energy was swallowed cleanly, and the already extremely strong muscles suddenly underwent some changes, and the muscles became stronger and stronger.

"Cool, it's really cool, Xiao Hei, how about I resist the first thunder?" Qin Yu still had the leisure to joke with Xiao Hei on the side.

Xiao Hei was engrossed in his surroundings.

Qin Yu also calmed down, waiting intently for the second heavenly thunder to fall.

At this moment, the earth tribulation clouds in the sky are constantly rolling, obviously brewing the second heavenly thunder, this first heavenly thunder Qin Yu is hard to carry, this is the achievement of external cultivation. And the second Heavenly Thunder, Qin Yu also planned to carry him, and this time he wanted to try the perversion of the Tears of Life.

The thunder is rolling, and the pressure on the below is increasing again, and the second heavenly thunder is about to fall.

Qin Yu immediately entered the state with all his heart, preparing to resist this second heavenly thunder, and with a shocking thunder, a purple dragon suddenly burst out of the calamity clouds and rushed directly towards Qin Yu below.

Qin Yu also smiled and let this heavenly thunder smash on him.

This second Heavenly Thunder is indeed very powerful. Qin Yu's whole person was directly struck by the thunder. When the thunder struck down his clothes, they shattered directly, and his whole body was black (the black of his clothes were ashes), and his hair stood on end.

However, Qin Yu himself was not in a big deal, because of the first Heavenly Thunder Forging Body, his body was already stronger. However, Qin Yu still suffered some dark injuries, but he was cured by the tears of life in the first time.

Therefore, although Qin Yu looks terrible now, there is no problem at all.

"This tear of life is really perverted, and the wound can be completely healed in the first place. It is worthy of the legacy of the God King of Life. Qin Yu complained.

At this time, there was a sound of eagle chirping, and the voice seemed very anxious.

"Don't worry, Xiao Hei, I'm fine, this little thunder is like killing me? Don't look at who I am? Qin Yu said stinkily.

Xiao Hei chirped again, as if reminding Qin Yu not to be careless.

"Okay, big brother knows, you can protect the Dharma for me with peace of mind." Qin Yu said with a smile. It's just that his smile at this time is really too weird.

As time passed, the purple clouds rolled more and more urgently. The electric snake kept rushing out, and the furious one was actually raging for dozens of miles, and the third heavenly thunder was constantly accumulating.

"Come on."

A trace of excitement flashed in Qin Yu's eyes, and the energy in his body suddenly surged, and his whole body suddenly glowed with black and purple light, and the black and purple dual-color true qi instantly covered his whole body, forming a dragon-shaped body protection qi, and even occasionally there was a trace of electric light surrounding his body.

The purple heavenly thunder was like a sledgehammer of the thunder god, and it smashed Qin Yu's dragon-shaped body protection qi. The body protection qi and the purple heavenly thunder were glued, and finally disappeared together.

"Haha, that's good." Qin Yu said. In his heart, he was shocked, just now he used the purple true qi of the Tongtian Xuangong and the ancestral dragon decisive true qi in the middle dantian at the same time. But it was able to block the third heavenly thunder. If it weren't for the positive and negative formations he had prepared in advance, the fourth heavenly thunder would have been more than auspicious.

The clouds rolled, thunder erupted, and then a purple bolt of lightning began to flicker in the clouds.

Qin Yu didn't dare to be careless, and finally opened the positive and negative arrays.

Look up at the clouds. I saw a purple thunderbolt rush out of the clouds at once.

"Boom!"

The wind was howling, and the purple thunder and lightning flickered in twists and turns, as if a purple divine dragon swam down, directly towards Qin Yu, this was the last heavenly thunder. After this heavenly thunder, he Qin Yu will be a cultivator.

"Boom!" Finally, this purple divine dragon crashed into the front and back arrays. The formation was supported for a moment, but it was finally shattered. However, at this time, most of the heavenly thunder had been consumed.

Looking at the thunder that continued to roar. Qin Yu laughed loudly, his eyes burst into essence, staring directly at the oncoming purple thunder, and at the same time, Qin Yu's right fist carried the power of ten thousand jun, like a mountain, and smashed straight towards the heavenly thunder.

"Boom!"

The two powerhouses collided, the air was completely distorted, and even Qin Yu's whole person fell into the ground with a kick deep. This fourth heavenly thunder was finally smashed by Qin Yu's punch, and finally turned into an electric snake and flickered on Qin Yu's body.

This is how Qin Yu's Heavenly Tribulation ended. This time Qin Yu survived the catastrophe, why didn't the green fire wolf come to make trouble? That's because the head wolf of the Blue Fire Wolf has already been controlled by Qin Yu, they will only protect Qin Yu from the tribulation, where will they come to make trouble for Qin Yu.

Xiao Hei flapped his wings and flew to Qin Yu's side at once, chirping happily. He also gently patted Qin Yu's back with his wings to congratulate him.

"How about Xiao Hei, big brother will survive the catastrophe before you, haha~~ You can cultivate by yourself these days, I am going to retreat, and I have to concentrate on cultivating "Star Change", the six realms of "Star Change", the Nebula period when you just get started is the most difficult to cultivate." Qin Yu said to Xiao Hei.

Xiao Hei chirped a few times in response to Qin Yu, indicating that he knew.

Qin Yu had read the cheats of "Star Change", which also included Lei Wei's narration, and Qin Yu naturally understood the difficulties of cultivation in the Nebula Stage.

Then, Qin Yu entered the Thunder Mountain Residence.

PS: This chapter is a bit watery, I hope you will forgive me......