Observing the duck white mold in his hand up and down, Du Yuhan's fingertips tapped the material, and gave it to the white mold a few times, and a little yellow duck with a round head and round head was completed. Looking at the model on the table, he stretched and breathed a sigh of relief.

Finally ran out of orders.

Before that, Du Yuhan had visited all the shops in the city, but he didn't find a single one that specialized in selling toys.

He was very confused, left in modern times, the most expensive and best-selling is that all of them are baby products and health care products for the elderly, as long as there is a research by a certain expert, the goods are sold out. But there is no market at all, why is that?

Kevin's reply was very realistic. In this place of strict class division, although there are hereditary nobles, there are also craftsmen with ancestral skills, merchants who dump goods everywhere, mercenaries who lick blood with the tip of their knives, and untouchables who are struggling. There are also many families who go out early and return late in order to have basic food and clothing, and they simply do not have the time or ability to focus on the cultivation of the next generation. Many children have been free-range since childhood, not to mention that even if they are trained, it is difficult to find a good position, so they simply don't bother with it.

Du Yuhan was silent.

The original family's background was very good, and he didn't think about it at all, there were still many people in this world who were counting meters and cooking.

However, this does not mean that there is no market, he believes that as long as the price is moderate, I believe there is still a head.

As expected, the pre-sale was a great success, and the five little yellow ducks were bought not long after they hit the shelves, and many people also came to inquire about the replenishment time of the goods after hearing the introduction.

The shop owner, who was urged many times, hurriedly found Du Yuhan and discussed the order. Du Yuhan took the opportunity to sell him the newly made Zuò's Rubik's Cube and Nine Rings, but it was a big sell.

Du Yuhan was very embarrassed about the shopkeeper's urgent order, the other party wanted a small amount, and it would not be completed in a month or two.

At this time, Kevin smiled slightly.

"We understand your urgency, but making a model is not an easy task. As you know, slow work and a lot of repetitive work will cause our clerks to resist, and the quality of the guide will be uneven, and I am afraid that it will affect your reputation in the end. ”

The shopkeeper, who had read countless people, understood it now, he laughed, raised the purchase price briskly, and expressed the idea of long-term cooperation.

Kevin reluctantly did his best.

"The clerks who have a sense of resistance" sat next door with wooden faces.

Tut-tut, Kevin is really condescending not to do business negotiations.

Due to the large quantity, the two parties agreed to deliver in batches, with five pieces each purchase, which can not only relieve the pressure of the order, but also play a good marketing role.

Du Yuhan pinched the little yellow duck in his hand, with a satisfied smile on his face. He didn't worry that others would learn this technique at all, and he had taken this into account when selecting the goods, so the goods were all finely structured models, and in the absence of accurate pouring technology, it was absolutely impossible to have a lower price than him.

Whether it is a craftsman or a peer, there is this technology must not disdain to do this, and those who want to do this do do not have this technology, so there are many competitors invisibly.

Just as Du Yuhan was cleaning up the items on the table, Kevin walked into the room excitedly, holding several pieces of parchment in his hand.

"Han, I found it."

"Did you find it? What is the meaning? Du Yuhan hurriedly stepped forward. Before, he handed the text engraved on the new library to Kevin, but he didn't expect the other party to be stumped by this obscure text. After studying for a long time, I finally made a breakthrough today.

"This is an ancient script that was handed down in the country of Lindote 4,000 years ago, and it is now very rare." Kevin pulled out a stool and sat down next to Du Yuhan, his fingers tapping the words on the parchment. His eyes were shining with excitement, and his fair cheeks were tinged with a faint crimson.

"More than 4,000 years?" Du Yuhan couldn't help but speak, he didn't expect this thing to be so old, "What does it mean?" ”

"According to the combination of fields, it is not like ordinary words, but like a spell." Then, according to the pronunciation of the ancient language, Kevin read it straight.

It's a pity that the pronunciation of the ancient language is very different from the modern language, and Du Yuhan didn't understand half a word. Incantations? Du Yuhan had a little headache, "What kind of spell is this?" ”

"This is the character after inserting the wind attribute magic core, if it is translated, it is a separation spell."

"Separation?" Du Yuhan rubbed the uneven surface of Xinku, frowning and pondering.

What does separation really mean?

"What about the other attributes?"

"The fire attribute is superimposed, the water attribute is congruent, and the earth attribute is fusion." Kevin translates the mantra's fields one by one.

Overlapping, congruence, separation, fusion......

Du Yuhan touched his chin and pondered the meaning.

Literally, it seems a little familiar, how can it be so similar to the previous high number operations......

Operation?

Du Yuhan was stunned, and slapped his thigh and suddenly realized.

yes, isn't that just addition, subtraction, multiplication, and division?!

He excitedly embedded a wind demon core in the groove, and in an instant, the entire iron arsenal emitted a pale green light. He casually dropped a small piece of bronze into it, and watched intently.

I saw that the bronze ingot was quickly extracted under the action of the iron warehouse, and the iron ingots faded rapidly at the speed seen by the naked eye, and after a while, a round yellow-green bronze material was suspended in the center of the iron warehouse.

Seeing that the material was no longer changing, Du Yuhan opened his lips and chanted the wind spell according to Kevin's pronunciation just now. In an instant, the blue light of the demon core embedded in the top cover was flourishing, and a whirlwind of pale green particles instantly enveloped the material and rotated around it at high speed.

The material ball, on the other hand, began to vibrate irregularly. As the frequency of the flutter increases, the globule seems to be pulled by two external forces, and is gradually separating towards the two segments. The part on the left that is separated is orange-red with a sharp metallic sheen; The right part is a silvery-white metal with a hint of bluish.

After a minute, the whole material ball split in two, and the red and white balls were quietly suspended.

The two were stunned.

"Han, won't the original properties of the material remain unchanged after it is extracted? Why can it be broken down into two? Kevin was puzzled.

"Hmm......" Du Yuhan touched his chin.

He'd never seen this before, and normally, the material would remain the same after it was extracted, but why could the bronze material still be separated?

What are these two things?

Du Yuhan leaned over and looked carefully, the smelting of bronze is mainly copper ore and tin ore, copper, tin ......

Hey? Isn't this red copper and white tin?

Thinking of the wind spell, he had an epiphany.

Could it be that the separation mentioned on the iron warehouse refers to the separation of materials?

Du Yuhan was very excited, thought for a moment, and threw a large piece of cinnabar into it one after another. He couldn't help but smile as he looked at the silver-white shiny metal liquid that was gradually separated, and the pale yellow material ball next to him.

Cinnabar is a very common alchemical material, and its main ingredient is mercury sulfide. However, mercury is very scarce in nature, and many alchemists have tried many ways to store mercury separately, but with little success. Now that the metals can be separated separately, it will be easier to want a purer material in the future.

Well, the wind attribute is separation, but what about the fusion of earth attributes?

Without saying a word, Du Yuhan began to study other magic cores with great interest.

Whenever Du Yuhan thinks of anything new, he will fall into his own thoughts and completely ignore the surrounding environment. Kevin had long been accustomed to the other party's behavior, so he could only shake his head helplessly, with a little pampering in his eyes, and quietly exited the room.

Looking out the window, Kevin planned to tidy up and go to prepare dinner. Just as he passed by the living room, out of the corner of his eye, he saw a long-lost figure.

Kevin:......

Picking up the teapot to refill a cup of black tea for himself, Raphael, who was sitting on the bench, picked up the teacup and tasted it elegantly. Ignoring Kevin's disdainful expression, he asked casually, "What about him?" I searched the house and couldn't find it. ”

Well, although the tea is inferior and difficult to swallow, this guy's tea-making skills are okay, so let's drink it first.

After waiting for a long time and not getting a reply, Raphael couldn't help but look at the other party with half raised eyebrows, "What's wrong?" ”

"It's nothing, I think it's time to change the locks at home." With a casual snort, Kevin walked into the kitchen.

Raphael:......