Riding the wind of rebirth

Chapter 512 Flaws
Zhou Zhi couldn't help feeling a little embarrassed: "Mr. Zhang, why don't you make arrangements for my elder friends first?"

"No, I'm with you." Jiang Shuyi said.

"Well, I'm also with Elder Brother Elbow." Guan Tingting also said.

Master Qiao made a mess again, staring at the pin that day: "How did you see the Republic of China? I think it's Tongzhi..."

This is unreasonable nonsense, Zhou Zhi couldn't laugh or cry: "You are even more outrageous than someone else broke into Qianlong..."

Mama Guan said with a smile: "Actually, those who can collect antiques are all from Ascot, and they are not short of money, so what matters is not the value of the collection in hand, but the culture and knowledge contained in it. "

Nowadays, people still like to save face. Mama Guan has a beautiful charm, and middle-aged women have a more graceful temperament. If she makes such a fight, several men will be speechless immediately.

"I have heard some old sayings that say, 'There is no one who learns first, and the master is the teacher', and I have also heard that 'If you hear the Tao in the morning, you will die in the evening'." Guan Ma said with a smile on her eyes: "So everyone, don't take today's matter as my own. See it as an emotional dispute, win or lose, just treat it as an academic discussion."

"Yes, yes, you speak well to this lady." Mr. Zhang hurriedly smoothed things over: "It's like learning from each other, that's what you mean."

"Respect should be given to those who are capable, not someone who can fool himself into an expert with a few big words." Although the middle-aged man was still dissatisfied with the muddle.

"The elbow, tell me, tell me the reason for your dating." Zhang Lao said.

"Then... just tell me?" Zhou Zhi looked at the middle-aged man and smiled.

"you say!"

Zhou Zhi reached out to support the mouth of the bottle, and poured it down: "Let's talk about the ring feet and the bottom payment first..."

"Kid, touch antiques without gloves, are you professional?" The middle-aged man sneered.

"Huh?" Zhou Zhi was stunned instead: "Of course not other antiques, but porcelain business has never been so particular."

"Because the glaze applied on the surface of porcelain is essentially a silicide glass body, which is resistant to acid, alkali, and corrosion."

After finishing speaking, he looked at Xu Gong with a half-smile: "If you wear gloves, you will miss the porcelain because the surface friction is reduced and it is too smooth. Therefore, it is always possible to get started directly when appraising porcelain. Wearing gloves to play with porcelain , but unprofessional performance."

XCMG quickly raised his hand: "I didn't wear them either, and we didn't distribute gloves to customers, they brought them with them."

"Really?" The middle-aged man was a little puzzled: "Old Zhang?"

"Xiaoyou Zhou is right." Mr. Zhang said, "It's true that you don't need gloves when appreciating porcelain."

After saying a word, the other men beside him also secretly took off their gloves.

Zhou Zhi said: "Let's talk about why it's not Tongzhi blue and white. Brother Yi was just talking nonsense before."

"The blue and white in the late Qing Dynasty, whether it is Tongzhi or Xianfeng, or even Daoguang before it, actually have the same problem, that is, the looseness of the glaze is more obvious, and the texture of the folk kiln is softer."

"There are also a few thinner and thinner porcelains, but the glaze surface is uneven and mostly white; while thick glazes are thicker and softer, the glaze surface is cloudy, and the transparency and hardness are not as good as those of the early Qing Dynasty. .”

"Of course, this also means that compared with the previous dynasty, even the Tongzhi official kiln is not comparable to the post-imitation craftsmanship."

"I happen to have a Qianlong official kiln ink clay box with a wide open door here. You can see the characteristics by comparing the bottom of the tire."

After speaking, he took out the Qianlong inkpad box that contained the Eight Treasures inkpad and put it on the table: "The base of this inkpad box is the six-character seal script made in the Qianlong year of the Qing Dynasty. It is made of high-quality Zhejiang material, with purple hair color and bluish underbody, fine and delicate, if you look carefully, there is a little red in the fetus.”

"Fetal red is also called flint red, and it mostly precipitates from the junction of the fetal glaze. The real flint red is soft and bright in color, harmonious and natural. The farther away from the fetal glaze, the lighter the flint red color is."

"And the fake flint red can be seen everywhere on the bottom of the utensils. The color is different, or too thick or too light, which is very unnatural."

"If you observe it under a magnifying glass, the real flint red is crystal clear and shiny, penetrates deep into the carcass, and blends with the fetal soil; while the fake flint red is lifeless and floats on the surface of the carcass."

"According to Mr. Geng Baochang's "Ming and Qing Porcelain Appraisal" said: 'Since the Yuan and Ming Dynasties, the flint red marks on the feet of the carcass have become more intense the earlier the age, and gradually disappeared in the early Qianlong period of the Qing Dynasty.'"

"The reason is that people have deciphered the cause of flint red, that is, there are minerals in the carcass, which are naturally released by fire in the parts that are not glazed, and are formed by secondary oxidation during the cooling process."

"Even the Yuan and Ming blue-and-white wares copied by JDZ today will show flint red if they are fired with new sand, or if the sand bottom of the new porcelain body is deliberately dampened before entering the kiln."

"Although this inkpad box is small, many features, whether it is the bottom of the tire, glaze color, blue and white hair color, shape, pattern, base, patina, and red tire, all meet the early Qianlong standards."

"It is called 'big open door' in jargon, and 'standard vessel' in modern language. We can use it as an important reference for Qianlong official kiln artifacts, and compare it with other suspected Qianlong blue and white porcelains as a basis for identification. Basis and reference standards."

The middle-aged man took the ink pad box in his hand and studied it for a while, but he couldn't find any faults, and then passed it on to the crowd. These people still have the ability to discern things with the door open, and they all nodded in agreement with Zhou Zhi's statement.

After getting everyone's approval, Zhou Zhi turned the ink pad box over to reveal the bottom of the tire, and then revealed the bottom of the Tianqiu bottle: "Look at it again, can you see the difference now?"

It is indeed easy to identify, and one person pointed to the Tianqiu bottle: "The tire of the bottle is whiter and thinner."

"That's wrong." The middle-aged man was puzzled: "Didn't it mean that after Kang Qian, the blue and white carcass became thicker as it went forward? Why did it become thinner instead?"

Zhou Zhi smiled and said: "The so-called roughness here refers to the craftsmanship, such as tire scraping, tire fitting, and tire repair. Of course, the fineness of mud washing is also included, but it is for Yongxuan blue and white as the top standard. It is compared with the chemical tires of the mechanical age."

"This is the flaw of this celestial bottle. The reason why the soil becomes too greasy and white is because there is an additional process that only later generations have - iron removal."

"Iron removal is the standard process for making porcelain clay in later generations, because steel ball mills are mostly used as the process of making clay powder. Therefore, in order to maintain the quality of porcelain clay, an additional iron removal process is required before making clay. The fired porcelain in this way The fetus will be pure and flawless.”

"The previous fetal soil did not have this process, so no matter how fine it is, there will still be small brown-black spots the size of a hair tip in the fetal soil. This is not caused by the thickness itself, but by the precipitation of iron impurities. avoid."

"This also leads to the fetal color of the real product, which is more natural than the imitation, with a light blue or light red color instead of greasy and white."

"The fetal soil of this Tianqiu bottle is wrong, which is the first flaw. The fetal red is too uniform, which is a deliberately made fetal red. This is the second flaw."

(End of this chapter)