A white light shot out of the bracelet and swept through the air, Du Yuhan tapped the white node with his five fingers, fine-tuned the wiring structure, and drew a grids in the shape of palm-sized water droplets. He violently urged the fighting qi, and the grid began to fade like a tide from the bottom under the infusion of energy, and a smooth porcelain white mold was quietly suspended above his left wrist.

The material of the white mold starts from the bottom to the top, from the inside and outside, and the transparent bottom gradually increases, and the top part even presents a glass texture.

He turned out a Yuan Bead and approached the newly built white mold, and the vermilion element was compressed into a thick liquid, which flowed slowly inside. With a strong pinch of his two fingers, the fragile Yuan Zhu shattered in response, and the flame element, which had been compressed to the extreme, expanded wildly under the action of air pressure, making high-speed random movements around the shattered Yuan Bead.

In an instant, these free fire elements were attracted by the powerful energy of the white mold, and they were absorbed by it without resistance.

As the white mold absorbs more and more fire elements, its temperature becomes hotter and hotter. At the bottom where the energy is most dense, the elemental energy takes on a light blue glow; The further outward the energy becomes, the weaker the energy becomes weaker, until the energy in the upper layer gradually becomes zero, and the flame takes on a bright red color with insufficient oxygen and insufficient combustion.

Du Yuhan skillfully controlled the energy of the fireball, so that it could not only continue to burn and gather in his hands, but also maintain a state of minimal elemental reduction. He looked at the stake man outside the window, a gleam flashed in his eyes, and with a movement of his left hand, the fireball with the surging flame element shot straight towards the stake.

"Bang! ――”

With a loud bang, the stake man in the backyard was torn apart by the powerful power of the fireball, and even the bursting sawdust was instantly swallowed up by the tongue of fire, leaving only a crackling explosion and a strong smell of burning.

Du Yuhan is very satisfied with the effect caused by the fireball, this spell is not only higher than the ordinary fireball technique under his improvement, but also has continuous debuff damage, although the energy fluctuation is only a mere fourth-order, the amount of damage can definitely reach the fifth-order level.

"It worked!" Du Yuhan breathed a long sigh of relief.

"Han, you're doing a great job!" Seeing the other party's progress, Kevin was happy for him from the bottom of his heart.

Hearing this, Du Yuhan was a little surprised, "Thanks to you, otherwise I don't know when I have to toss around." ”

In the past few days, they have tried to extract various attribute elements and spell systems. To the surprise of the two, the most difficult thing was not the advanced spell thunder system of the wind system, nor the advanced spell ice system of the water system, but the fire system with only a single element structure.

Among the many attributes, the fire elemental is the most active, and the slightest difference in energy will make a huge difference in the structure of the fire spell. He didn't notice this at first, and only used it as an ordinary element, but after experiencing several flameouts of insufficient energy and explosions of excess energy, he slowly mastered the trick of infusing energy.

For example, the energy density should not be too large when perfusion, and the energy attenuation range from the inner layer to the outer layer should not be too much, and the energy of the grid layer must be reserved to gradually become zero...... Etcetera.

The two summarized some experiences, Kevin put forward his personal views on these experiences, and Du Yuhan made some fine-tuning on this basis.

The success of the spell relaxed their nerves, which had been tense, and Du Yuhan glanced at the remaining demon cores on the table, and found that the magic cores that were originally piled up into a small mountain were left under the wanton squandering of the past few days. When Kevin proposed to buy the materials for making zuò yuanzhu, Du Yuhan readily agreed.

When passing by the gate of the small courtyard, he swept the corner of his eye and saw two figures fighting together, and when he looked closely, it was actually Heywood and Raphael practicing with each other.

"Why did they fight?" Du Yuhan looked at Kevin in surprise.

Seeing this scene, Kevin's expression was indifferent, as if he had expected it, "I heard that Raphael wants Heywood to help him improve his strength, so as not to drag everyone back when he encounters danger outside in the future." ”

Looking at Raphael's slender figure, he was forced to block left and right by Heywood, and he had no power to parry, Du Yuhan couldn't help but hold his forehead.

Let's not talk about whether this method can work or not, just looking at the current situation, the bear child is estimated to break the other party with a ruthless hand, which also improves a yarn!

Just when Du Yuhan was hesitating to step forward to stop him, Kevin sighed faintly.

"Their relationship is really good......"

Hearing this, Du Yuhan carefully observed for a while, although Heywood's fists were to the flesh, the intensity of the attack was not large, it seemed that the attack was still measured, at most it would hurt for two or three days, and there should be no major problems. Besides, this is Raphael's willingness, the one is willing to fight and the other is willing to suffer, and he, an outsider, has no room for beaks.

Besides, Heywood is Raphael's savior, after a few days of contact, Du Yuhan feels that Raphael's personality is relatively indifferent, and now he can take the initiative to let Heywood train himself, which shows that he still trusts him very much.

Du Yuhan shrugged, decided not to get involved in the matter, turned around and walked towards the gate.

And Kevin, who was following him, glanced back at the wolf bèi figure at the moment he turned around, revealing a smile of unknown meaning.

*********

Noon is the busiest time of the city, and the streets are full of people. In all the intersecting streets, a few horse-drawn carriages hurried towards the center of the confusion, plunging into the staggered traffic, adding to the noise of their coachmen.

Before going to the material store, Du Yuhan first went to the jewelry store, polished the black ore from before into jewelry, and put it on the auction house to see if there was a market, and asked about the price by the way.

The two of them went to the largest jewelry store in the city.

Perhaps most of the customers are aristocratic ladies, and the interior of the store is lavishly decorated, and the cabinets are full of all kinds of jewelry. Although it looks as high-end as the modeler's shop, it has a vaguely more cheesy sense of money compared to the style of an art museum.

Du Yuhan found the clerk and directly expressed his willingness to customize jewelry. After understanding his needs, the clerk led the two to the reception room at the back of the mall.

Not long after, the clerk turned back and brought with him an uncle who looked to be in his sixties.

"This is the most prestigious master jeweler in the store, and if you have any needs or questions, he can provide you with the most professional answers." After a brief introduction, the clerk bowed down and exited the room.

"I heard that you two want to create a bracelet?" The uncle wore a pair of monocrystalline lenses in his left eye, and looked at the two young people happily.

Du Yuhan nodded, took out the black ore and handed it to the other party, "This is it." ”

Taking the palm-sized stone, the jeweler turned the lens, and a beam of incandescent light shot out from the side of the glasses and hit the surface of the ore. He observed very carefully, lest he miss anything, and shook the ore a few times from time to time, and gently rubbed the surface with his withered fingers.

After nearly half an hour, the other party finally raised his head, and Du Yuhan hurriedly leaned over, "Master, how is it?" Can you tell what kind of stone it is? ”

The jeweler frowned and shook his head slowly, "I've been in this business for nearly a hundred years, but I've never seen such a strange ore. ”

Compared with the appraisal results of the jeweler, Du Yuhan was more shocked by the age of the other party.

Nearly a hundred years?

Uncle, you are expensive this year?!

No matter how you look at it, you are only in your early sixties!

As if not paying attention to the other party's surprised look, the jeweler continued, "I feel that the energy contained in this stone is very powerful, and it should be a high-quality material for forging and upgrading; But if it is placed in the jewelry market, it may not be able to sell for a good price. ”

"Why?" Kevin was a little puzzled, it stands to reason that this kind of strange stone should be a scarce product, isn't it liked by many nobles?

The jeweler smiled and patiently analyzed, "Most people like dazzling jewelry, although this kind of ore is also very magnificent in a specific situation, but at first glance it is featureless, and the color is deep, it is estimated that it is not easy to make a shot." ”

Du Yuhan was a little disappointed, thinking that he could sell it for a good price, but it seemed that he was still thinking too ideally.

Seeing that their feelings were not too high, the jeweler was relieved: "Although this ore cannot be marketed in the jewelry industry, it can be used as a forging material, it should be first-class, it is estimated that many forgers will rush to get it." ”

Du Yuhan pouted, the forging merchant has a hairy use! This ore is a little bigger, not enough for him to build a sword hilt or something. And how much can it be sold for at this point? It's better to hold the collection yourself......

"Do you two still need to make jewelry out of this ore?"

The two exchanged glances, and Du Yuhan made up his mind to nod vigorously, "Yes." ”

Although the ore doesn't fetch a lot of money, even the seasoned jeweller believes that it has great power and might make it a modeling bracelet.

Measuring the size, Du Yuhan still wanted to carve a carving or something on it, and then thought about it, it seemed that other modeling bracelets were very simple shapes, and he was worried that the energy inside would be destroyed, so he dispelled this idea.

The jeweler carefully recorded the customer's needs and compared the size of the ore, "Do you want to make any jewelry from the remaining scraps?" ”

Scraps? Du Yuhan rubbed his chin. It's a pity to lose such a peculiar material, but what should I do?

He glanced at Kevin, who was sitting quietly on the side, and his heart moved, and he had a plan.

"Kevin, can you go out first? I have something I want to discuss with the master. Du Yuhan's right hand lightly touched the other party's white palm, teasing and playing with the other party's fingers, and blinked his eyes to sell cuteness.

Although he didn't know what weird thoughts the other party was moving, Kevin still bowed slightly, "Okay, I'll wait for you outside." ”

After sending the other party away, Du Yuhan immediately muttered to the jeweler for a long time, exchanged a lot of information, and finally the two finalized the deal at a price that was satisfactory to both parties. After signing the contract, Du Yuhan happily paid the deposit, agreed to come over tomorrow to pick up the goods, and ran to meet Kevin in a good mood.

Seeing Du Yuhan's look of "come and ask me", Kevin smartly didn't ask, "Shall we go to the material mall now?" ”

Hearing this, Du Yuhan pursed his lips, "Aren't you curious about what I just said?" ”

"Oh? I'm curious, will you sue me? ”

"That's not for sure." Du Yuhan showed a sly smile.

Kevin suddenly laughed and asked kindly, "Then dear Han, can you tell me what you just said to the craftsman?" ”

Du Yuhan smiled proudly, like a child who had succeeded in pranks, "Guess? ”

Kevin shook his head, his eyes full of doting love, his hands wrapped around each other's fingers.

"Master Qiyu, the little one can't guess."

"Then you serve me comfortably, and I may sue you."

"Waiting? Living? Or ......"

"Ahem! Where are you looking? ”

"Hehe, the little one is thinking about how to serve the master comfortably."

“……”