Thunder sound walnut, four products, just right to break evil.

  In the past, Zuo Mo didn't have many fourth-grade materials on hand and knew very little about them. In remote and small worlds like Tian Yue World and Xiao Shan World, ancient jade slips that involved fourth-grade materials were even more rare.

  Four-product materials, extremely valuable, ordinary people can hardly see them. Those who can use them and have accumulated experience are only some powerful sects. Wu Kong Jian Men is obviously not among them, and the jade slips left by Zuo Mo also do not count as a small number. However, the content involving four-product materials is only a few words, and most of them are still unclear.

  But as the four materials in his hands gradually increased, he also gained some insights.

  The biggest difference between four-star materials and three-star materials lies in the natural symbol arrays, where the natural symbol arrays on four-star materials are more complete and complex than those on three-star materials, and are of a higher order.

  Zuo Mo didn't know that his seniors had comprehended the Symbol Arrays from various materials, and could only sigh in amazement at the wonders of creation.

  The level of a cultivator's equipment refinement depends on how well the cultivator can activate the natural talismanic arrays within the material. The technique for inscribing talismans on fourth-grade treasures is also closely related to the natural talismanic arrays in the material.

  The Lei Yin walnut, after being nurtured by the warmth of thunder for a period of time, had a body that was as if it were molten silver, with dense and intricate patterns on its surface. It felt heavy in one's hand, and its size had shrunk slightly, but it was surrounded by a layer of fine, emerald-green lightning aura. One had to wrap their palm with spiritual energy just to pick it up.

  Bring it in front of your eyes and examine it carefully, you can immediately feel the surging thunder yuan inside, and it's hard not to secretly gasp in surprise.

  This thunder sound walnut is a good thing, but it's also quite dangerous. If you're not careful when processing it, there's a possibility of explosion and injury to yourself.

  Recalling Pu Yao's previous suggestion to use the method of refining the Yin Fire Bead to refine the Lei Yin walnut, he was too busy at that time and didn't have the time to ponder it carefully. Now that he had the chance to think about it carefully, he seemed to have gained some insight. Pu Yao wouldn't speak without a reason, but sometimes what he said made sense, while other times it didn't.

  "The Yin Fire Bead Chapter" lists many methods for refining the yin fire bead, and there are numerous types of yin fire beads, leaving Zuo Mo in awe. Previously, because he couldn't find a place with suitable yin energy to condense into a yin bead, this jade slip was also discarded.

  At this time, his insight was far superior to that of his contemporaries. Now, picking it up again and re-reading it carefully is a completely new experience.

  Gradually, there was a hint of enlightenment in his heart.

  The key to refining the yin fire bead lies in using yin fire. The yin bead is of yin attribute, and the flame used for refinement also requires yin attribute. Zuo Mo's previous clock fire happened to be yin fire.

  Logically speaking, with the same attributes, they will only nourish each other and eventually merge into one. The amazing thing about "Yin Fire Pearl" is that it can make two things in a state of seeming fusion but not fusion, and this state is precisely the most violent explosion of power.

  Such a mysterious change left Zuo Mo dazed and confused. Even the predecessors who created the Yin Fire Bead didn't know how they came up with such a magical technique.

  If the method of using Yin Huo Zhu is used to refine Lei Yin walnut, then pure Yang fire flame is needed. However, it's even more suitable for Zuo Mo, as the Golden Crow Fire in his hand is a top-grade pure Yang fire flame.

  However, he needs help. The Lei Yin walnut is a fourth-grade item, much higher in grade than the dark pearl he condensed back then.

  Zuo Mo suddenly had a movement in his heart, he thought of Xiao Huo and Xiao Tong.

  Xiao Huo is a fire demon, and Xiao Ta has the five elements in his body, forming a complete entity, both of which can control fire.

  He and Xiao Ta were mentally connected, and as soon as he had a thought, Xiao Ta would know. Before long, Xiao Ta brought the small fire to the Fu Zhan Tower. The silly bird also wore a small black hat and followed.

  Little Fire flew into the Symbol War Tower, and was like a ball of red fire, rolling around in mid-air, playing with great enthusiasm. Little Pagoda stood by, listening blankly to what Left Mo said.

  He immediately took out more than a dozen exquisite boxes from the ring, which was specially left for Jin Wu Huo. The rest were all sold out. Jin Wu Huo was not difficult for him, but obviously there was no time now.

  The small fire that was rolling around in the air suddenly stopped, saw the Linglong box, and immediately let out a happy chirping sound, transforming into a ball of flame, about to pounce on the Linglong box. The scent of flames emanating from inside had an irresistible attraction for it.

  Before anyone could stop it, it swallowed all the exquisite boxes in one gulp.

  He was suddenly stunned, his hands frozen in mid-air.

  After a while, he came back to his senses, and the first thought that flashed in his mind was, another foodie!

  The little pagoda was also spinning around the small fire, rotating rapidly.

  Only saw Xiao Huo's round body, immediately became even more rounded, like a red bubble. Suddenly, on its forehead, a golden star the size of a fingernail appeared.

  However, upon closer inspection, Zuo Mo couldn't tell whether that was Xiao Huo's forehead or not, as it was truly too round.

  Staring at the small fire for a while, the small fire didn't make any movement.

  Little Fire continued to chirp happily, playing with Little Pagoda in the air. One moment, Little Pagoda would use its pointed tip to poke Little Fire, and the next, Little Fire's round body would bump into Little Pagoda. The two were clearly having a great time, causing the small black creature on the side to twitch its antennae excitedly, as if eager to join in.

  Zuo Mo stared at the small flame.

  Still no change...

  After playing for a while, Xiao Huo noticed that Zuo Mo had been staring at it all along, making happy squeaking sounds, and suddenly flew into Zuo Mo's arms, rubbing and nuzzling wildly.

  Zuo Mo reached out and grabbed him, his round body really was like a bubble, soft and warm.

  However, Zuo Mo was clearly unmoved by the flattery. With a swift motion, he grabbed Xiao Huo and brought it to his face, casually pinching it into various shapes. Gnashing his teeth, he said: "You little thing, you swallowed so much Golden Crow Fire, but there's not even a hint of change? Do you know how many crystal stones that is? You swallowed so many crystal stones in one gulp..."

  The little pagoda's body shook slightly, and it floated silently outwards. The small black bird that was originally eager to try, suddenly froze its disheveled crest in mid-air, the most calm idiotic bird.

  Zuo Mo was furious and couldn't be stopped. He had originally planned to give one each to Xiao Yu and Xiao Huo, but unexpectedly this guy ate them all in one go, not even leaving the boxes behind.

  "Can't you even spit fire?" Zuo Mo's killing intent surged as he said, "Can't? You can't even spit fire? You dare to say you can't? Do you know how many crystal stones that is...?"

  A small flame on his hand hastily sprayed out a tiny spark of fire.

  "Huh! As expected, it spits fire!" Zuo Mo's expression changed to one of curiosity, and he brought the small flame in front of himself, examining it up and down, muttering to himself: "No butt eyes, where does it spit out from?"

  Xiao Huo's body suddenly stiffened like a meatball.

  The little pagoda suddenly lifted its eaves, covered its face, and the entire tower was like a cooked shrimp, bright red all over.

  After studying for half a day, Zuo Mo still couldn't figure out the reason. He decided not to waste any more time, hoping that this group of foodies could help him out, and he was really desperate.

  Don't have illusions about this group of foodies forever...

  Zuo Mo's heart was bleeding, so many crystal stones were gone...

  Like Meng Da's four juniors, they immediately fled back to the mine cave at incredible speed.

  Zuo Mo decided to take matters into his own hands. However, he didn't dare test it in the Symbol Tower, lest he accidentally blow up the entire tower. He chose a three-grade auspicious cloud from the warehouse and sat on it, slowly floating up into the sky.

  Xiangyun is as soft as cotton, but except for some hedonists, basically no one uses it. Compared to flying swords and spiritual beasts, its flight speed is too slow. However, there are also some high-quality Xiangyun with extremely fast speeds. For example, the famous Jin Dou Yun, among the five-grade mounts, can rank in the top ten in terms of speed. Moreover, although Xiangyun is slow, it has a good advantage - it doesn't need to be controlled at all, and it will still fly steadily.

  This auspicious cloud was only the size of a palm, and as soon as it was thrown out, it immediately expanded to about ten zhang in diameter. It could hold many people, and the female cultivator stood not far from him. As for the dense crowd of cultivators stationed on the distant mountain top, he didn't care if they saw or not. With the symbol war pagoda and the female cultivator around, he wasn't worried that anyone would interrupt his cultivation.

  He took out the Lei Yin walnut and sprayed out the Golden Crow Fire, starting to refine it.

  The most critical part of refining the yin fire bead is that you need to fix the state of the yin bead and the yin fire at the moment just before they melt.

  To his left, a golden flame enveloped the walnut of thunder sound.

  It took a whole hour for the Golden Crow Fire to refine away the layer of Leng Lei surrounding the Lei Yin Walnut, revealing its true body inside. Another half an hour passed, and the silver walnut's surface, which was covered in dense, fine lines, began to show signs of melting. The silver liquid flowed slowly along the walnut's texture.

  The majestic and powerful Lei Yuan made Zuo Mo's heart skip a beat, as if he was walking on thin ice.

  The four materials are indeed extraordinary!

  Zuo Mo's mind was fully immersed in the refining process, which wasn't easy, but for him, it was a rare epiphany. Whether it was Golden Crow Fire or Thunderclap Nuts, they were all rare fourth-grade materials.

  The two merged, giving birth to countless variations, many of which he had never seen before.

  The natural talismanic arrays on the thunder sound walnut are constantly being shattered and reorganized during the refining process, like small pieces of Lego blocks, forming new patterns. Some are talismanic arrays, while others are just disordered piles, requiring the practitioner to sift through and experience the changes in these arrays.

  Different practitioners, through different ways to experience, to understand, but its essence, is like out of the same mold.

  Without such enlightenment, no matter how high and profound one's cultivation is, no matter how robust the spiritual energy within is, if they cannot break through in their realm, they will still be weak.

  Zuo Mo became completely absorbed in this mystical world, and the sense of unease in his heart gradually disappeared as he focused on forgetting himself.

  Only to see the golden flames in front of him suddenly jump and slow down, just like a wild horse being tamed.

  The walnut shell changed rapidly, the original dense and messy texture disappeared, and it became a perfect silver ball. A thread of golden fire seeped into the silver ball, and the surface began to reveal beautiful golden fine lines.

  Golden threads grew more and more, as if golden vines were wildly spreading along the surface of Lei Yin walnut.

  Zuo Mo suddenly opened his eyes, and a Lei Yin walnut fell into his palm.

  Only golden threads were seen, intricate and complex like flowers, covering the surface of the silver ball, just like an ordinary silver ball, without a single hint of aura exposed.