Mu Yu also has casting classics in his hand, but he has never had time to read them. This time, in order to prepare for the refining weapon, I can only calm down and study it carefully. After all, it is a natal magic weapon that follows one's life, and if there is a problem with refining, it will not only waste a lot of energy. If you don't achieve the expected goal, it will take a lot of time and effort to improve it in the future, and it will be troublesome.

A large book has to be as thick as Mu Yu's skin. Eh, no, it's probably about the thickness of your palm, if you really have to read it carefully, you don't know how long it will take!

Mu Yu is also just looking for important parts to read and study. For example, how to perfectly integrate various attribute spirit materials, when to add some attribute spirit materials, and in what state they should be added, these are all very important things, and it is difficult to reverse once something goes wrong.

Fortunately, these problems are recorded in the classics. Perfect fusion of various spiritual materials, in addition to a deep enough understanding of various attribute powers, to fuse them with technology. There is also a stupid way, that is, to find other special spiritual materials, and through the attributes of this spiritual material, to make those spiritual materials perfectly integrated.

However, this method is all a local tyrant's method, and there are many kinds of spiritual materials with different abilities. And they are all expensive to death, and the cheapest one usually appears at various auctions, and the above spirit stones are traded.

However, Mu Yu didn't have to worry about this at all, Qu Yao left him a lot of these spiritual materials, which were completely enough for them to use in refining weapons.

There are some things that the three of them discuss and study together. After all, the method of casting the two sisters learned is still relatively simple, and it is okay to use it to refine low-grade magic weapons, but it is not enough to refine magic weapons based on god-level spiritual materials.

After studying for half a month, Mu Yu finally had some understanding of refining tools, and began to prepare various main spiritual materials and auxiliary spiritual materials.

He wants to refine a main sword, one hundred and eight flying swords, and the demand for this kind of spiritual material is naturally indispensable. Although Mu Yu later discussed with the sisters and refined thirty-six flying swords for each of them, and the number of flying swords to be refined by himself was reduced to thirty-six, the consumption remained the same.

"There are basically all kinds of ingredients, but if you want to meet your expectations, it is best to collect Star Iron, Pure Soul Stone, Succubus Eye, and Polar Ice. Mu Yu put the spiritual materials in his hand in a storage bag, but since he was now considering refining magic weapons for the sisters, it was also necessary to add some special spiritual materials.

Xingchen Iron is a magic weapon that all three people must use, and it can be combined with the magic weapon's ability to resist attacks and increase attack power.

The Pure Soul Stone is to take into account the situation of the birth of the Soul Spirit in the future, if the Soul Stone can be added, the Soul Spirit will be born earlier, and even take shape at the beginning of refining.

There is a big gap between the magic weapon with the machine spirit and the magic weapon without the machine spirit, and it is completely the difference between heaven and earth. Of course, this refers to the magic weapon of the same level, and the god-level non-instrumental spirit magic weapon can still crush the mortal-level instrumental spirit magic weapon, which is beyond doubt.

The eye of the succubus is to take into account Jiang Mei'er, and it is very likely that there is a charming physique hidden in her body. Maybe the Jiang family also feels this way, so when changing her name, they will add the word 'charm'.

Polar Xuanbing is prepared for Jiang Ying'er's magic weapon. Although the two daughters are both ice spirit physiques, if you really want to compare, Jiang Ying'er's ice spirit physique is more pure, and she is born with the characteristics of affinity with the power of the ice attribute.

Because of this, Jiang Ying'er was able to release the artistic conception of ice at the beginning of her cultivation, while Jiang Mei'er was much later.

Each time one of these four spiritual materials is added, there will be a huge change in the ability of the magic weapon. Therefore, if you want to cancel the addition of these spiritual materials, after the magic weapon is refined, the power will definitely not be as expected.

"Xingchen Iron is very difficult to do, and there doesn't seem to be one in the sect. There may be some Supreme Elders who will collect some of them, but it is impossible for us to use them. To the pure soul stone, I heard my sister say that there is a superb collection on the top floor of the Treasure Pavilion of the core gate of the sect, but the value is high, and it depends on the identity. The Succubus Eye is also in the top collection, but it is said that this thing was captured by an Elder Taishang after killing a strong succubus. It's just put in the town there, and it won't be sold, so it's very difficult to get it. The Polar Xuanbing Jiang family has it, if you go to the Jiang family to find your sister, she will definitely be able to get it. "Jiang Ying'er has not been cultivating all the time, and has learned a lot of secrets through Jiang Qi.

"Star iron is not a difficult thing, hundreds of thousands of years ago in the war, there were extraterrestrial meteorites falling, which must contain some star iron. It's just that it's the Falling Demon Canyon now, and it's still unknown what it's like. "Mu Yu regretted a little, he should have asked Sun Ling when he was in the secret realm of blood. He said that he was going to the Falling Demon Canyon, and later appeared in the Blood Secret Realm, presumably once before. You should ask what is going on inside, otherwise it is not a good thing to enter rashly.

"Then let's go to the Treasure Pavilion first and see if we can get the two spiritual materials that are treasured inside. Jiang Ying'er only thinks that Mu Yu is sure enough, so she doesn't worry about Xingchen Tie's affairs.

"Sister, didn't the eldest sister say it once before! That succubus eye is something that the Elder of the Tree Venerable obtained, maybe we can go to the Tree Venerable to try it, and maybe we can get it. Jiang Mei'er pulled Jiang Ying'er's clothes and said weakly.

"Tree Venerable, isn't that the second elder in the Earth Forest?" Mu Yu was almost stunned, he didn't expect that elder to be so strong, he had killed a succubus powerhouse.

"It's hard, Venerable Tree once said that that thing will not be sold under any circumstances. Once a genius girl in the sect wanted to buy that thing and smelt it into her natal magic weapon, but she was sternly rejected by the Venerable Tree, and she was almost arrested to be a janitor for him for ten years. Fortunately, the girl's master is not a simple character, she is in an important position in the sect and has a remarkable status, which keeps her. Jiang Ying'er shook her head, as a trio, it was difficult to meet the Venerable Tree.

If it weren't for the last time when the Tree Venerable talked to the Great Elder of the Earth Forest, the Tree Venerable probably would not have been born at all, and would have been hidden until the day when the sect was really in trouble.

"Then buy the Pure Soul Stone first, this thing is easy to get. "It's not that Mu Yu doesn't dare to try, it's just that every strong person has his own temper. He had to ask for the eye of the succubus, and if he was to be taken as a janitor, he couldn't help it!

Then Mu Yu went alone and went to the Treasure Pavilion to buy the 'Pure Soul'.

"Show me your disciple order. ”

There are many restrictions in the Treasure Pavilion, even if you want to enter the door, you need a disciple token, and you can't be a non-core disciple.

"I'm going to go to the top floor to see, how do I get there?" After Mu Yu entered, he couldn't find a staircase to go to the higher floors after looking for a long time, so he could only go out and ask the guards.

"Do you have any identification on the top floor?" the guard hadn't met anyone who was going to the top floor for a long time, and even the elders couldn't afford to buy the things inside.

"Didn't I show my disciple token?"

"It's not enough, you need a higher status, and you need a certain amount of financial resources, at least you have to be able to buy the lowest price in it. The guard didn't know Mu Yu, and he didn't dare to offend him, so he said truthfully.

"I can enter the cultivation holy land, and I am Jiang Qi's companion. Is this okay?" Mu Yu was really speechless, and he needed so many proofs to buy something.

"No, if Jiang Qi comes to take you in person, it's pretty much the same, you can't do it alone. The guards knew Jiang Qi's identity, but Mu Yu couldn't prove his relationship with Jiang Qi, so he had to politely refuse.

"What's the matter, why don't you let him in?" At this time, an elder passed by, going to the Treasure Pavilion to buy something and refine the elixir.

"Back to the elder, the disciple didn't mean to stop him, he said that he wanted to go to the top floor, but according to the regulations, he needed to go to the top floor with proof of identity. The guard saluted respectfully, and said neither humbly nor arrogantly.

"The disciple has seen the elders. Although Mu Yu didn't know this elder either, he also bowed respectfully to show respect.

"Oh, Mu Yu, have you advanced to the Psychic Realm? This is to refine the natal magic weapon, right?" This person is the Supreme Elder of the Core Sect, and he still knows Mu Yu, so he can recognize it at first sight.

"Yes, the disciple lacks one or two things in refining the natal magic weapon, and he needs to go to the top floor to buy it. Mu Yu didn't know that he was more famous in the circle of elders, so he only thought that this elder was saying kind words. After all, the disciple token in his hand is engraved with his name.

"Okay, his new identity hasn't been figured out yet, this time with my identity, you open the passage. The elder took out his elder order and handed it to the guards.

"Yes. The elder spoke, and the guard didn't dare to say anything more even if he had any questions. Directly opened the passage and returned the token to the elder.

"Disciple, thank you, Elder. Mu Yu bowed, walked into the small transmission array on the side, and then went to the top floor.

"Sure enough, the more you go to the top, the rarer the collection becomes, and the fewer things there are. Mu Yu looked at the top floor with a large area, but there were only a few display cases.

Don't think about it, every piece of the collection here is a treasure, and it can be auctioned off for a sky-high price in the outside world.

Some things are too expensive, even elders who have practiced for hundreds of years can only look at them, and they can't afford them at all.

"Oh my God, even the display cases are made of black gold and precious crystals from the Beiyuan mining area. Mu Yu took a closer look and found that the display cabinets here were all made of very scarce things. It is difficult to find a magic weapon that ordinary cultivators want to use black gold to refine magic weapons, but here it is used to make a display case, which is too luxurious.

"The origin of the Earth Fire Beast of the Void Realm is worth 30,000 low-grade spirit essences. Mu Yu took a closer look, the things inside were scaryly expensive, and the lowest was traded with spirit essences, and spirit stones were not used here at all.

You must know that such things as spirit spirits are generally used by high-level monks. Generally, if you don't reach the Imperial Spirit Realm, it's hard to get in touch with this kind of thing. Although it is only a cultivation resource, because it contains a large amount of pure spiritual power, it is generally used to break through the realm, and no one will have the luxury to trade it.

This place is not too big, Mu Yu quickly found the Pure Soul Stone he needed, and also found a small piece of Star Iron.

"Fortunately, this soul stone is enough, and it's not too expensive. Mu Yu breathed a sigh of relief when he saw the price. 40,000 low-grade spirit essences are not too expensive, and the spirit essence and blood spirit essence in his hand are enough.

It's just that this Xingchen Iron is enough for one person to refine the natal magic weapon, and it is too expensive to buy it, and it is a pity not to buy it.

"Hello, I'm the administrator here, if you have anything unclear, you can come and ask me. Mu Yu was hesitating whether to buy the piece of star iron or not, when a slightly stiff voice sounded in his ears, scaring him half to death.

"Damn, I'm scared to death. Why don't you come out early? Are you lazy?"

Mu Yu looked up and found a spirit standing next to him, like a puppet, with a stiff expression and a slightly dull expression.

The spirit was a little embarrassed, and actually blushed. He was really lazy just now, because no one had come up here for too long, so he was sleeping.

That is, Mu Yu touched the display cabinet of Xingchen Iron, and he woke up because of this, and suddenly appeared beside Mu Yu.