Yellowstone is a very commonly used material in yin-yang arts, and this thing will be used in many spells, especially those spells with strong aggression, seven or eight times out of ten will use yellowstone, and most of them will be used in yellowstone's spells, and yellowstone appears as the main material, in other words, without this yellowstone, Wu Song has many abilities that cannot be used.

For example, some Yin damage spells that forcibly strip the body from the soul, Wu Song can't fully use it because of the lack of Huangshi, the main material, in the case of not using Huangshi, he can only separate the soul from the body, but there is no way to ensure the integrity of the soul, this seems to be nothing, but the actual impact is quite large, and with Huangshi, Wu Song's Yin-Yang technique can definitely take a big step forward!

At the time of the annual trading meeting of Daweili Trading Bank, Wu Song had deliberately paid attention to the Yin-Yang spell casting materials, and also found some Yin-Yang spell casting materials, but the main material of Huangshi was not heard at all, and now he actually saw Huangshi here, which made Wu Song not excited.

"Hello master, I want to know how this method is changed?" Wu Song smiled at the master with a delicate face, and rarely used an honorific title.

"Master Wu, are you talking about this Pinggu Huangying stone?" The female master smiled and asked, obviously, when Guan Yunting brought Wu Song in before, this one had already noticed Wu Song.

"This thing is called Pinggu Huangyingshi?" Wu Song subconsciously asked after hearing this name.

"Yes, the first time Master Wu heard of it?" The female master asked with a smile.

"Well, I've seen this thing before, but I didn't know what it was called at the time, and this is the first time I've heard its name." Wu Song nodded and casually made up a nonsense.

"It's not strange for Master Wu to hear about this Pinggu Huang Yingshi for the first time." The woman smiled and said, "This thing is produced in the western part of the Pinggu Empire, the yield is very rare, it is used as a material for some explosive alchemy products over there, and it is rarely leaked out, if Master Wu does not go to the Pinggu Empire often, it is not strange to hear about this Pinggu Huangying stone for the first time." ”

"Well, thank you for your advice, by the way, I've been talking for so long, and I still don't know what to call the master?" Comrade Xiao Wu changed the topic with a smile, and said that Lao Tzu's fingers that played with Huangshi in his previous life had changed color, how could he not know what this thing was for, but those guys used Huangshi as a blasting material is really a bit of a tyrannical thing, although Huangshi can be used for blasting, but the effect does not seem to be much better than ordinary gunpowder.

"I can't talk about it, Master Wu, you are really polite, I just knew it earlier than you." The woman smiled and said, "My little sister's surname is Mo Chou, and I will ask Master Wu to take care of me in the future." ”

"Uh, Master Gu's good name." Comrade Xiao Wu was choked a little by the other party's name, he really wanted to ask the other party why he was not surnamed Li, but after thinking about it, since there is a person named Mu Rongfu in this world, it doesn't seem to be an uncommon thing for Gu Mochou to come out again, this guy gently pursed his lips and said, "Master Gu, I want to ask what you plan to exchange this Pinggu Huangying Stone for?" ”

Master Wu laughed. Gu Mochou pursed his lips and looked at Wu Song with a smile and said, "Although the output of this Pinggu Huangying stone is not much, it is not a rare thing, from the level of view, it is just a sixtieth level material, I took these things originally for an additive, if I used this to exchange with Master Wu for items, wouldn't I be laughed at by everyone to death, if Master Wu is interested in this Pinggu Huangyingshi, my little sister will give you a piece." Gu Mochou said and handed over the piece of Pinggu Huangying Stone that Wu Song had seen.

"How embarrassing is that!" Comrade Xiao Wu smiled very shyly, but he was not polite in his hand, and directly took the piece of Pinggu Huangquite handed over by Gu Mochou, and after carefully checking and confirming that this stone was indeed the Huangshi he needed, Wu Song smiled and asked Gu Mochou, "Master Gu is really a bold person, I just heard what Master Gu said that it seems that there is still this kind of Pinggu Huangying?" ”

"I do have some of this stone, what? Master Wu still wants more of this stone? Gu Mochou was stunned for a moment when she heard Wu Song ask about Pinggu Huang Yingshi again, she was a little unsure of what the other party wanted for this stone that was not of much value.

"Well, I really want to buy some more stones from Master Gu." Wu Song nodded, rolled his eyes and said, "To be honest, I still have some research in alchemy and forging, and it just so happens that I recently used this Pinggu Huangquite in an experiment I did, but the previous ones have been consumed by me, and I don't know what this thing is called, so I haven't been able to find it, and I met you Master Gu today, which can be regarded as a kind of fate, so I want to purchase some Pinggu Huangquite from you, Master Gu." ”

"Of course, I will never treat Master Gu badly to you." Wu Song didn't give Gu Mochou any chance to interject and continued, "I think that among the materials that Master Gu needs, there seems to be a Lingma black gold crystal, right?" I am willing to use the Lingma Black Gold Crystal to exchange some Pinggu Huangquite with Master Gu, I don't know what Master Gu thinks? ”

This Lingma black gold crystal is a rare metal that will be used in the production of equipment by multiple armor professions, but the output of Lingma black gold makes most spirit masters love and hate, as for the Lingma black gold crystal, it is extremely rare, and Wu Song chose to exchange Lingma black gold with the other party at this time, which can be regarded as showing sincerity.

Of course, if the other party is the kind of person who has to make inches, Comrade Xiao Wu will definitely not know that it is a pit and jump into it, anyway, he already knows the origin of this Pinggu Huangyingshi, and he can't make a deal with Gu Mochou, so he just goes to the Pinggu Empire for a trip.

"Master Wu, are you saying that you are willing to use the Lingma Black Gold Crystal to exchange the Pinggu Huangying Stone with me?" Gu Mochou couldn't believe his ears when he heard Wu Song's words.

She wanted this Lingma black gold crystal to be used to forge armor, and as a master-level spirit master who was proficient in forging techniques, Gu Mochou knew very well how valuable the Lingma black gold crystal was, and also knew how big the gap between the Pinggu Huangjing and the Lingma black gold crystal that the other party wanted, so when she heard that Wu Song was actually planning to use the Lingma black gold crystal that was many times higher than the Pinggu Huangquite to make a deal with herself, Gu Mochou almost thought that she had heard it wrong.

"That's right, I do have some Lingma black gold crystals on hand, but the amount is not much, the total is only about a kilogram, I hope that Master Gu doesn't need too many Lingma black gold crystals, otherwise it will be a pity." Wu Song is not stupid, he has already said it to death before the other party opens his mouth to talk about the conditions, and he also knows that if it is really like Gu Mochou said, Pinggu Huang Yingshi is only a level 60 material, and the gap between what he took out and this thing is quite large, so Wu Song said in advance that he does not have too many Lingma black gold crystals.