Wood is used as fuel in the kiln, so the temperature is raised slowly.

Porcelain firing has to go through four main stages: low temperature, oxidative decomposition, high temperature and heat preservation. If the temperature in the kiln is low, the porcelain will be deformed, and if it is high, the porcelain will be easy to turn yellow and crack.

The whole process of firing porcelain lasted two days, and Donner kept an eye on the situation of the kiln, estimating that it was almost over, and arranged for someone to extinguish the firewood inside in the morning.

At noon, after the temperature in the kiln has cooled, the kiln will be opened to extract porcelain.

Donner, Jasmine, Hans and other people involved in the manufacture of porcelain stood outside the kiln and waited, while several middle-aged men with relatively stable personalities entered the kiln to take out the porcelain.

"This ...... This is what we fired with mud?"

"Oh, the Goddess is above, it's a miracle. ”

Chaotic exclamations came from the porcelain kiln, making the personnel outside curious.

Jasmine's cold eyes couldn't help but glance at Donner beside her, what is this porcelain?

The people inside soon came out with a piece of porcelain in their hands, and the exquisite plates and vases in their hands made everyone unable to take their eyes off them.

It was just perfect!

Porcelain has always been the most magnificent treasure in Chinese culture and art, porcelain is different from pottery, porcelain has a delicate texture, soft whiteness, and good light transmittance. According to the literati, it is Yan Ruyu, bright as a mirror, thin as paper, and sound like a rock.

The porcelain presents a different texture and brightness from ordinary pottery clay pots, and exudes the noble temperament of the nobility.

"This is what we made out of mud? How did this happen?"

"yes, that's amazing. ”

The pirates involved in the production of porcelain couldn't help but exclaim, these things were basically made step by step by their hands, obviously they were all mud, how could they become so incredible after burning them with fire.

The pirates couldn't think of a reason for breaking their heads, some of them hadn't fired clay pots and pottery out of clay, but they were so rough and ugly.

Jasmine and Hans were equally surprised, the firing of porcelain was something they agreed to, and they had been witnessing the process, but they were far from expecting that some of the mud would change so magically in Donner's hands, ...... Is it magic?

Donald had the pirates put the porcelain on the ground like a nobody, so he could take a closer look.

"Put it on the ground?" the pirates swallowed, thinking that their ears had misheard, how could such a treasure be placed on dirty ground?

Donner shook his head, a little funny: "If you want to hold it, hold it!"

As he spoke, Donner stepped forward and took the porcelain pieces in the pirate's hand one by one to examine them carefully.

From the beginning of production, these porcelains were marked one by one by Donna, and from kneading the clay and drawing the embryo and glazing the material, to the location of the kiln, they were all recorded in detail on the animal skin paper.

After all, this is the first experiment, and if you want to get the best porcelain firing process, you can't do it without keeping a good record.

Although Donner is not an expert in porcelain identification, as a well-informed modern person, at least the obvious advantages and defects of the appearance of porcelain can still be observed with the naked eye.

Several pieces of porcelain have a faint cyan color, which is due to the earthy quality, and if you want to fire white porcelain, you must have a purer kaolin, but Crescent Island obviously does not have it.

The first plate is not glazed, so it has a rough appearance, but it is still much smoother than pottery. The glazed glass is much smoother, and the glaze of quartz clay has been fired at high temperatures to become a thin vitreous layer attached to the glass.

The vase mixed with shell powder in the glaze is much whiter, while the porcelain with iron powder has several cracks, which are obviously cracked.

However, Donner did not know exactly what caused the porcelain to break, and it was estimated that it might be related to the temperature change.

"This is what you call porcelain?" Jasmine picked up a vase and observed it in her hand, "It's made of mud, how did it become like this?"

"Yes, this is porcelain, the reason will not be clear for a while, and I will tell you slowly later. Donner observed them one by one, and then wrote the advantages and disadvantages of them on the vellum paper with a quill pen: "Look at these porcelain, how many silver coins can you estimate to sell for a piece?"

"Sell?" Jasmine froze.

Donner glanced back at the girl, Jasmine usually wore a long dress on the island, but what came to his mind was the first time he had seen Jasmine, wearing armor and carrying a wide heavy sword.

"Didn't you say that we won't be pirates in the future, and these will be sold to noble merchants in exchange for silver coins and grain for us. ”

"But these ...... Treasure. "These porcelains are so beautiful, Jasmine is a little reluctant.

Donner smiled: "I can't eat it, you also saw it, it's all made of mud, don't you want as much as you want in the future?" I think everyone on our island should have a set of cutlery made of porcelain." ”

"One set for everyone?" everyone present swallowed the saliva, their eyes revealing incomparable anticipation.

But is what Donner said true? Is it true that everyone really has it? Will there be divine punishment for eating with such a perfect treasure?

In their opinion, using this kind of porcelain to make tableware is simply blasphemous, too extravagant, it is estimated that the king does not have this kind of tableware!

Donner didn't laugh out loud, he will make porcelain into a toilet bowl in the future!

"Yes, now we can only make simple tableware and wine glasses, and when everyone is proficient, we can make porcelain into the appearance of monsters, such as dragons, griffins, gods, let's sell this porcelain all over the continent and earn back a lot of silver coins!"

Listening to Donner's description, they had already begun to imagine what it would be like to be overwhelmed with silver coins. After all, such a treasure will definitely be sought after by the nobles on the mainland, so how many silver coins will have to be sold!

"Tell me how many silver coins should be sold for each piece of porcelain?" Donner put down the porcelain and stood up, patting the dust off his hands.

"A silver coin?" said one of the slaves, whispering, after all, one silver coin was a lot for him.

"How is it possible, sell it for at least ten gold coins!" shouted the other, who seemed to him that such a treasure was simply given by the gods, and how could it not be sold for a high price.

Donner shook his head, and asked them if they were playing the harp to the cows, and with their poor knowledge, it was estimated that there was no way to measure the value of the porcelain, and even Hans could not tell him a price.

Donner didn't know the specific prices on the mainland and the living standards of the nobles, so he had to walk to Yuri's house with two vases of the best quality, after all, the old alchemist had lived on the mainland for decades and often went in and out of the mansions of noble merchants.

He was well-informed, and he was well versed in the preferences and purse bags of the aristocracy, and should be able to provide a suitable price reference.