After a pause, Chen Nanshan continued: "I said Xiao Zhang, you have fired this Ru porcelain and Tang Sancai to the peak, and you are also studying this blue and white porcelain, how much do you know about the red in this glaze?"

If Chen Nanshan asked Xiao Zhang this question before, Xiao Zhang could at most briefly introduce which dynasty the red in the glaze was the porcelain species that appeared in which dynasty, and what was the production process......

I don't understand it.

Because I really don't understand.

But now it's completely different.

Now Xiao Zhang is a real master of all kinds of ceramics.

No matter what kind of ceramics are here, Xiao Zhang can say one, two, three.

"I naturally know the red in the glaze, the red porcelain in the glaze is an artistic treasure in the traditional ceramics, belongs to the achievements of the ceramic class of the working people in Jingdezhen in the middle of the Yuan Dynasty, the production process of red porcelain in the glaze is roughly the same as the blue and white porcelain of the same era, the same is made of copper oxide as a colorant, after painting and decorating on the tire, the transparent glaze is applied, and it is fired in the atmosphere of high temperature reducing flame, because the red pattern is under the glaze, so it is called red porcelain in the glaze. Xiao Zhang said with a smile.

The firing process of this glaze red is the same as that of blue and white porcelain, both of which are a kind of underglaze color, and they all belong to the first type of porcelain with underglaze color in history.

And blue and white porcelain is neck and neck.

It's just that the color of the underglaze is different.

One is blue and white, and the other is safflower.

But by and large, it's similar!

"Yes, it seems that you really know a lot about our Jingdezhen. Chen Nanshan said with a smile.

After a pause, Chen Nanshan continued: "This glaze red porcelain is one of the characteristics of our Jingdezhen, when firing, it is just like you said, it is colored on the tire with copper red material, and then covered with transparent glaze in a high-temperature reduction atmosphere fired at a time, the temperature is about 1,300 degrees, so that the porcelain with red patterns under the glaze. ”

"According to the existing excavated materials and hand-me-downs that we have now, there is no doubt that the glaze red porcelain was first created in Jingdezhen in the Yuan Dynasty. Chen Nanshan deliberately emphasized.

"What, I'm afraid I'm saying that the pure glaze red wasn't researched by you in Jingdezhen?" Xiao Zhang teased.

I'm not afraid, now it is a thing recognized by the world, but in the early years, it was really the case, because the glaze red with copper red material as the coloring agent, copper red glaze is very difficult in firing technology, normal color development is not only related to the copper content in the color material and the composition of the base glaze, and the requirements of the firing atmosphere and kiln temperature are very sensitive, any small changes in the formula and firing conditions will lead to improper tone, so the pure color of the glaze red porcelain is rare in the Yuan Dynasty, mostly gray-red. So it is not pure, and the Hongwu period of the Ming Dynasty glaze red is still less, the hair color is more light red or grayish red, but compared with the Yuan Dynasty has been greatly improved, Yongle Xuande period of the glaze red hair color is excellent, thick and bright like a gem, there are also light red, which is related to the transparent white glaze refining at that time has reached a very high level, so there is a while of people say that the glaze red in Jingdezhen in the Yuan Dynasty is not red in the glaze at all......"

"You should be careful about this, this is all in the past, glaze red is a technology, it has nothing to do with color, what we inherit and protect is this long-standing technology, this is the point!" Xiao Zhang quietly took a lesson.

"You're right, let's go, let's go over and have a look, I see you also know a little about the red in the glaze, do you want to help me take a look together, check it?" Chen Nanshan said with a smile.

"It's no problem to check it, although I can't fire the red glaze, but it's okay to take a look. Xiao Zhang nodded and said.

"This batch of glaze red was bought from other kilns, and it was sent over after firing after ordering, but you also know ......" Chen Nanshan sighed.

Xiao Zhang nodded and said: "I know, isn't the biggest feature of this glaze red is that it is difficult to fire and the yield is very low, because the glaze red is made of copper as a colorant, and various patterns and decorations are directly drawn on the white tire, and a layer of glaze is applied on it, and the copper emits red in the high-temperature reduction flame, so it is called glaze red, and it is precisely because of copper that it is difficult to succeed in firing." ”

"If you know what I mean, then we'll go over, and after we've collected this shipment, we'll go to dinner. Chen Nanshan said.

In recent years, the demand for glaze red porcelain is still very large, but the firing rate is very low.

This makes the price go up.

But the price is not a good thing, because the quantity is still small, and the yield is still low.

Therefore, there are still many defective products in many glaze red goods, which need to be carefully reviewed and selected.

Once the eyesight is not good, this can only be recognized.

And this glaze red is also very special.

Because this glaze red porcelain was created and burned in the Yuan Dynasty, but the number is very small, which can be described as rare.

The reason is that copper ions are very sensitive to temperature and cannot be heated in the kiln, showing a black-red or gray-red color.

The copper ions will volatilize and escape from the glaze layer, showing a unique flying red phenomenon.

Or simply fade and the ornamentation is incoherent.

At that time, it was difficult to control the temperature of the wood-burning kiln, and it was impossible to produce it on a large scale only by comparing the experience of the craftsmen with the light taken out of the fire.

Moreover, at that time, the Yuan people were still white, while the Han people were still red, and the sense of national identity was also different, so the output of red in the glaze has been very small.

Even now, the number of firing of red in the glaze has been delayed, and the amount of ancient survival is very small.

"Here we are. Chen Nanshan said.

Xiao Zhang nodded and looked at the row of workers in front of him with the big box.

This should be the finished glaze red product that Chen Nanshan's home is going to receive this time.

To be honest, Xiao Zhang now has the information of glaze red in his mind.

But Xiao Zhang really hasn't seen the red in the glaze so far.

And even if I saw it, I forgot about it now.

Xiao Zhang is still looking forward to it, what is the red in this glaze?

According to the memory in my mind, this glaze red is similar to blue and white porcelain, but the color is different, one green and one red.

But when the bear's paw actually saw the red in the glaze, that thought disappeared completely.

This glaze red is really beautiful.

It can even be said that the truly colorful ones are extremely rare, and as I said earlier, there is not much red left in the glaze in this history.

It refers to the bright and pure color, bright and dazzling glaze red.

If you count the ones with improper colors, black and red, the amount of red in the glaze may be more than that of blue and white porcelain.

But the striking gem is the brightly colored red.

And this one is the least.

"Yo, Brother Nanshan, what are you doing to make our brothers wait so long to come back?" said the leader to Chen Nanshan.

Chen Nanshan ignored it, but directly stepped forward to check the red porcelain in the glaze.

Xiao Zhang saw clearly from the sidelines, and the person who spoke was afraid that there was some contradiction with Chengnanshang.

But it doesn't matter, because after all, it still depends on the quality of the goods.

"Luo San, we don't have the right people for the goods, let's look at the goods first, right?" Chen Nanshan said.

"Yes, come on, open the box!" Luo San shouted to his workers.