If you want to refine the elixir, you must have materials! With such a treasure as the Qiankun Pot, Geng Qiang didn't worry about refining the elixir at all, and the Yin Yang Ding was something that might come from the divine realm! Even the Heavenly Tribulation of the Immortal Realm could be refined into an elixir! He was only worried about where to get the materials for alchemy! What he needed most now was the materials for refining the elixir.

Now the elixir that Geng Qiang needs is mainly human-grade elixir, which is the so-called human pill, including four grades: inferior, medium, upper, and superb, as for the elixir, even with Geng Qiang's current strength, he does not dare to take the elixir. The huge energy contained in the elixir would directly burst Geng Qiang's upper and lower dantians! Not to mention the rest of the Lingyun Martial School, and as for the Divine Pill, for Geng Qiang, it was a legendary existence! That was not something that the Yin Yang Ding could refine.

The raw materials for refining the lower grade, the middle grade, and even some of the top-grade Renren Dan are easy to say, most of them can be found in the human world, but the raw materials for refining the best Rendan, which Geng Qiang himself needs most, are extremely difficult to find, Geng Qiang found that some medicinal materials have even disappeared in the human world!

"'Thousand Days Soaring', a high-grade human pill that specializes in improving cultivation, refining raw materials: 50 catties of 100-year-old strong muscles, 50 catties of 100-year-old strong bones, and 50 catties of 100-year-old explicit drunk??????? , No, this is not good, these raw materials, this is the first time I've heard of them, let alone looking for them!" Geng Qiang looked at the pill compilation of "Heavens and Ten Thousand Worlds" on the table, and while reading, he thought about what pill he should refine in the coming days. Now he had eliminated a lot of pills, all because Geng Qiang couldn't get the raw materials needed to refine these pills! Now he had denied a top-grade pill called "Thousand Days Flying Ascension."

"'Once the spirit', healing is a holy medicine, refining raw materials: 100 catties of 100-year-old elderberry, 100 catties of 100-year-old rejuvenating root, 100 catties of 100-year-old blood tonic insects?????? I've heard of elderberry, and if you look at this illustration, it's probably the elderberry you see every day. But I've never heard of this Qi Root and Blood Replenishing Worm, so I still can't refine it!" Geng Qiang shook his head, grabbed his unkempt hair with his hand, and denied another elixir.

Geng Qiang finally knows what it means to be "a good woman is difficult to cook without rice"!

"Alas, if only the passage to the Demon Realm could be opened. Since it is recorded in "Heavens and Ten Thousand Worlds" that there are many precious medicinal herbs in the Demon Realm, this statement should be true, but unfortunately my strength is not yet able to open the passage of the Demon Realm, even if I can open the passage between the Demon Realm and the human world, I must be careful. Otherwise, if you let a large number of Demon Realm monsters sneak into the world, it will be troublesome!" Geng Qiang sat back in his chair, threw the book into the table casually, and gently tapped the table with his hand, thinking carefully about how to find a large number of elixir raw materials!

If you want to refine a large amount of elixir, you have to go to the Demon Realm, but Geng Qiang has no cultivation to open the Demon Realm Passage! Even if he can open the passage, how sure can he be that when he opens the passage, no monsters will escape out of the Demon Realm and come to the human world, causing disaster to the human world! Geng Qiang can't do such a thing for the sake of improving his own cultivation and causing trouble to the entire human world. Although Geng Qiang's strength is probably invincible in the entire human realm now, Geng Qiang still respects every life. I won't hurt them innocently. He didn't want to destroy this beautiful world because of his cultivation.

Geng Qiang thought about it for a long time, but he didn't come up with a reason, so he reached out and took the "Heavens and Worlds" on the table in his hand, and flipped through it casually, trying to find a solution to the problem from "Heavens and Worlds".

Geng Qiang now finally understood why the immortal powerhouse Ziyan Zhisu liked to gain knowledge by reading books instead of using spars. Reading is not only a process of acquiring information, but also a process of removing the false and retaining the truth, and purifying and sublimating the information. However, the acquisition of knowledge through the spar is only a simple acquisition of knowledge, especially a book with a huge amount of information like "The Heavens and Ten Thousand Worlds", if all the information in it is compressed into a spar, let Geng Qiang absorb it at once, I am afraid that Geng Qiang's sea of knowledge will have to explode!

What Geng Qiang is looking at now is the information about the Three Realms of the Universe. He wanted to know exactly everything about the Demon Realm.

"The Heavens and Ten Thousand Worlds" divides the universe into three realms, the divine realm, the fairy realm, and the lower realm, and among the three realms, each realm has countless parallel spaces, and these parallel spaces are also called small realms. Between the Three Realms, the normal way can only be crossed by ascending, and it can only be achieved by flying from the lower level to the higher level! Only some people with special means, or with the supreme decree of the Upper Realm, can enter the lower realm from the upper realm! The crossing between the three realms is extremely mana-consuming, and it is impossible for those who are not powerful to do it at all!

But in the countless small realms in each of the major realms, it is easy to open the passage, and even in the places where the space and the space come into contact, due to the friction of trillions of years, some loopholes will suddenly appear, and at this time, the creatures in the two spaces will penetrate each other through these loopholes. For example, in the human world, there are many places that are often haunted, and there is a hole between the two spaces of the human world and the ghost world.

Although it is much easier to establish passages in these small realms than in the three major realms, after all, it is a passage between space and space, and it is by no means something that ordinary people can establish between space and space! At least Geng Qiang can't do it now.

The Nether Realm is divided into four parallel realms, which are the Human Realm, the Demon Realm, the Demon Realm, and the Ghost Realm.

The human world is the space on the earth where normal human beings live. That is the space where Geng Qiang lives now. In this space, with the plundering of nature by human beings, the resources have become more and more barren, and there are many places that are no longer even suitable for human beings to live! Human beings who think they are smart have invented all kinds of weapons that completely deviate from the laws of cultivation, and although these weapons are extremely powerful, and some weapons even have the power to destroy the heavens and the earth, these simple attacks do not contain any power from the laws of heaven and earth, they are just simple destruction! One day, the human world will be unrecognizable! That is the end of the entire Nether Realm, because the Human Realm is also the basis for the existence of the other three minor realms.

The Demon Realm, the Demon Realm is full of monsters. Demon, also known as Moro, also known as the killer. Whether it is a human, a demon, or a ghost, as long as you have demonic nature, you are a demon! The gravitational force of the demon world will automatically lead these things that have become demons to the demon world. Demons are the most ferocious creatures in all walks of life! They are amorous and lustful, they are eager to live and die, they are extremely self-interested, they are self-centered in everything, they ignore rules, they ignore life, they do not distinguish between good and evil, they do not know beauty and ugliness, killing and plundering are their only life, and they never know what sin karma and merit are! It can be said that the Demon Realm is the most dangerous and chaotic of the four small realms in the Nether! It can also be said that all the scum gathered in the Demon Realm are the scum of the other three small realms! Coincidentally, the resources in the Demon Realm are the richest! There are many natural treasures!

In the demon world, all creatures other than human beings, if they are truly successful, they will become demons! Demons, unlike demons, demons are also divided into good and evil, there are demons with good hearts, and there are demons with evil hearts!

In the ghost world, after the death of human beings, their souls will not disperse, and they will enter the ghost world. Ghosts are not like demons, there are also good ghosts and evil ghosts, good and evil!

"Strong tendon grass, growing in the Demon Realm, strong bone flower, growing in the Demon Realm, continuing the qi root also grows in the Demon Realm, blood tonifying insects, growing in the Demon Realm??????? Why are these raw materials for refining pills in the Demon Realm? Where is it not good? The Demon Realm is dangerous, we are not afraid, but how can this spatial passage be opened?" Geng Qiang muttered while reading the book.

After muttering for a while, Geng Qiang put the book on the table again and quietly walked to the window of his room, thinking about how to open the passage between the human world and the demon world.

Geng Qiang is not a demon, so naturally he will not be directly attracted by the demon world. If he wants to enter the Demon Realm, there is only one way, and that is to forcibly open the spatial barrier between the human realm and the Demon Realm, and enter the Demon Realm at the moment when the spatial barrier is broken. Before entering the Demon Realm, Geng Qiang had to establish a Qimen Shield Great Array in the human world, and then when he entered the Demon Realm, he would establish a Qimen Shield Great Array. Since the space in these two great arrays can penetrate each other, and time can be reversed at any time! Therefore, these two Qimen Shield Great Arrays will become teleportation arrays! After the teleportation array is established, as long as you grasp the laws of the operation of the Qimen Shield space, you will be able to enter and exit the human realm and the demon realm at will.

If Geng Qiang wanted to preserve this passage forever, then he only needed to use real materials to build these two teleportation arrays. If Geng Qiang is just going back and forth temporarily, then just build these two teleportation arrays into a virtual array, as long as Geng Qiang comes out of the demon realm, he casually puts away the true elements that make up the virtual array, and everything is OK!

However, the problem is that Geng Qiang can't open the barrier of the Demon Realm at the moment and enter the Demon Realm space first!

Geng Qiang stood in front of the window, slowly closed his eyes, and carefully combed through the information he had obtained from "Heavens and Ten Thousand Worlds". Suddenly, Geng Qiang's mind had a flash of inspiration!

"Lei Zheng Dan!! Why did you forget this thing! I can't break the space barrier, it's just because my mana is not enough, if I can find the weakest place in the space barrier between the human world and the demon world, and detonate the Lei Zheng Dan, I will definitely make cracks appear in the weak space barrier! And where the space barrier between the human world and the demon world is weak, "The Heavens and Ten Thousand Worlds" has recorded a lot of places!" Thinking of this, Geng Qiang's eyes suddenly lit up, and he grabbed his hair vigorously with his hands.

"! my hair seems to be getting longer again, it's time for me to get a haircut again. Geng Qiang put down his hand and suddenly muttered again. After speaking, Geng Qiang actually walked out of the room with Shi Shiran, and this girl really found someone to get a haircut.

The Demon Realm is different from the Human Realm, there is not the slightest order there, killing there is just the most common thing, the survival of the fittest for a long time, natural selection, so that the monsters that can survive in the Demon Realm are quite strong! Geng Qiang knew that if he wanted to enter the Demon Realm, he must be fully prepared. This time, however, he had no intention of going on his own. In order to allow the people around him and all the Lingyun disciples to be trained, Geng Qiang decided that if he could really establish a passage between the Demon Realm and the Human World this time, then he would teleport a large number of Lingyun disciples to the Demon Realm and go there to practice!