Ouyang Feng's words made Hong Lao on the side laugh.

Hong Lao smiled: "Ouyang, Ouyang, you are still so skinny!"

Ouyang Feng continued to say to Xiao Zhang: "Little doll, do you want to hear the story behind the blue and white porcelain?"

Xiao Zhang nodded, and said while configuring the glaze: "Listen up, Old Man Ouyang, I love to listen to what you said about blue and white porcelain." ”

Ouyang Feng nodded, now it is okay to come first, after recognizing Xiao Zhang's blue and white porcelain craftsmanship, it is also a little boring to watch Xiao Zhang configure the glaze, otherwise it is a lesson for young people to talk about some interesting stories.

"This blue and white porcelain, is a major item of foreign trade in the history of China, this unique Chinese characteristics of the product was sold to the world, before also said, this blue and white porcelain first appeared in the Tang Dynasty, from the existing Tang Dynasty blue and white porcelain and archaeological fragments, the quality of blue and white porcelain in the Tang Dynasty is not very high, the Song Dynasty blue and white porcelain has no big development, still in the exploration stage, the Yuan Dynasty has some famous blue and white porcelain supplies handed down, the quality has been greatly improved, the Ming Dynasty is the peak period of rapid development of blue and white porcelain, although there is a decline in the middle, but to the Qing Dynasty Kangxi, blue and white porcelain reached its peak, the middle and late Qing Dynasty, blue and white porcelain completely declined, there is no infinite scenery in the world。 Ouyang Feng said slowly.

Xiao Zhang nodded and continued to listen.

"In fact, the blue and white porcelain technology level of Yongle in the Ming Dynasty is very high, which is related to Zheng He's voyage to the West, the smooth flow of maritime trade, so that Su Ma from the Arab region, that is, Su Qing for short, can be easily transported to China, after Xuande, the Ming Dynasty court has repeatedly ordered a ban on the manufacture of official porcelain, for many reasons, but blue and white porcelain is still in small quantities of production, due to this order of the imperial court, the import of Su Qing has almost stopped, and the pigment of blue and white porcelain is mainly relied on the previous inventory. ”、

"In the middle and late fifteenth century, the production of blue and white porcelain in the Ming Dynasty rose again, but at this time, the historical records recorded that the inventory of Su Qing has been used up, from the blue and white porcelain pigments, the junction of the fifteenth and sixteenth centuries, the imported pigments are not much, mainly with domestic green materials, in fact, the domestic green materials have been used very early, but because the content is different from the imported Su Qing, the firing results are not as good as the imported Su Qing, therefore, when the import can be guaranteed, the domestic kiln mouth is generally reluctant to use domestic green materials, especially when the imported Su Qing is not very expensive, even more so。 Ouyang Feng began to tell some old things about this blue and white porcelain.

Xiao Zhang also slowly grinded the ore glaze in his hand.

While listening, I also feel the historical connotation of blue and white porcelain.

"I'll tell you about the color tone, the difference in this tone mainly has the following constraints, the first is the color, the second is the fetal bone, the third is the glaze, the fetal bone is the fetus in the glaze, the fetus is yellow, whitish, soft and hard have a certain impact on the blue and white, the quality of the glaze, the color and the thickness have an impact on the color. ”

"The constraints of color, the first is the green material, the second is the application technology, the third is the roasting temperature, the application technology is when painting, how about the painting work, if the paint is dipped in the same, the drawing line is even, the blue and white burned out is a color, otherwise the blue and white will appear in different shades of color, and the other is the roasting temperature, it should be 1260 degrees, a very accurate temperature, the same green material, if the temperature is too high, the color is black, the temperature is too low, a little green. Ouyang Feng was like a teacher, tirelessly telling Xiao Zhang a lot of details.

In the field of blue and white porcelain, Xiao Zhang really lacks such a teacher.

Of course, there is a special situation, that is, the simple blue and white porcelain, when its color and color are the same, if it goes through the second roasting, that is, after entering the furnace again, the color is darker than not entering the secondary furnace, like the later blue and white red and green color, bean color, etc., and then the green material, the green material is affected by three aspects, the first is the composition, the second is purification, and the third is preparation. ”

Xiao Zhang nodded.

The problem with these details is that the knowledge points that the system currently provides to its own firing technology do not exist.

After all, it is an entry-level firing technique, and there are some deep-seated technical problems, in addition to practice, it is learning.

"The composition of this green material is mainly cobalt oxide, the color it emits is blue, which contains a certain amount of manganese oxide, and there is a kind of ferric oxide, referred to as iron oxide, the higher the content of cobalt, the more positive the blue, the content is less gray, when the manganese content is high, the blue and white are purple in the blue or red in the blue, and the hair color of the blue and white is black when the iron oxide content is high. Ouyang Feng squinted his eyes and said with a smile.

Ouyang Feng didn't know how much Xiao Zhang could absorb after listening to what he said, but with his feelings, Xiao Zhang needed his experience and skills very much, and he also hoped that Xiao Zhang could read more.

"Old Man Ouyang, the disciple has been taught!" Xiao Zhang thought for a while, absorbing a large number of details that Old Man Ouyang said.

This is too important for Xiao Zhang.

"It's okay, it's good to help you, this blue and white porcelain is too important in the history of our country! Our motherland Huaxia is called China by foreigners in English, in English pronunciation, this porcelain and Huaxia have the same sound, basically porcelain represents China, Huaxia is the hometown of porcelain, of which blue and white porcelain is indispensable, in the history of China, there seems to be no kind of porcelain that makes countless foreigners flock to it! It can be said that blue and white porcelain in history is the real promotion of the progress of Chinese porcelain!" Ouyang Feng said with some sadness, as if he was also explaining why he was so obsessed with blue and white porcelain.

Xiao Zhang could even feel the faint sadness in Ouyang Feng's tone.

"This Chinese porcelain at that time, in foreign countries can be said to be everywhere they went, the locals vied with each other to regard it as a rare treasure. Ouyang Feng had a faint smile on his face.

However, expensive long-distance transportation makes it very difficult for people in other countries to buy a piece of porcelain, so foreigners continue to make special trips to China to learn porcelain-making techniques. ”

After a pause, Ouyang Feng continued: "Since the Song and Yuan dynasties, Longquan celadon, Dingyao white porcelain, Jingdezhen Qingbai porcelain, and Cizhou kiln colored porcelain are all the objects of their study.

According to historical records, in 918 A.D., North Korea learned the method of making porcelain in China, in the fifteenth century, North Korea can use the green material to imitate the blue and white porcelain of Jingdezhen, the porcelain culture of China was transmitted to small Japan, the early days were used as a bridge in North Korea, to the tenth year of Tang Zhenyuan, well, that is, around 794 A.D., Emperor Huanmu of Japan directly sent people to China to learn porcelain, but they were able to independently fire porcelain, but in the Southern Song Dynasty of our country. Ouyang Feng waved his hand and smiled.