It's Mr. Peng Jianjun, why is he here? Jiulong was very surprised and took the initiative to say hello.

Mr. Peng smiled and said, "How could I be missing from the Strange Stone Festival? I came here at the invitation of Mr. Wei, what kind of ring match is he going to have, why, you don't know?"

Jiulong smiled: "I know a little, it seems that Wei always asked Mr. Peng to come over to help." ”

Mr. Peng immediately reacted: "You kid, you were also arrested to help, didn't Mr. Wei invite you to dinner at night." ”

"My role is insignificant, that is, I am just here to join in the fun, and it will be up to Mr. Peng when the time comes. ”

"You kid is so good at talking, I don't even know what you want me to do. ”

Mr. Peng told the truth.

Kowloon immediately changed the topic and said with a smile: "What is Mr. Peng looking for in the market?"

"The opening ceremony has not started yet, I came to find out if there are any good stones, but I didn't expect to meet my old friend Natural Brother. ”

Mr. Pang responded.

"Yes, I was about to go to them, where are they?"

Kowloon asked.

"Turn right and you'll be there. ”

Mr. Peng pointed with his hand.

Kowloon said thank you, and then said to Mr. Peng, "I'll show you something." ”

Immediately, from the shoulder bag he carried, he took out the mandarin duck painted pottery stone and handed it to Mr. Peng's hand, he didn't say anything, to see how Mr. Peng reacted.

Mr. Peng only glanced at it, his eyes lit up, and he said excitedly: "Isn't this the head of a great man? Great, where did you find it?"

Jiulong laughed and said: "It's not Tao, I personally went down to the Hongshui River to catch it." ”

"You're going to do this too? I didn't expect it to be a very dangerous job. ”

Mr. Pang found it incredible, how Kowloon did it.

"I just went down once, but I didn't expect such good luck that he would be mine. ”

Kowloon looked smug.

"How much is it? I just need this kind of redstone. ”

Mr. Pang touched the stone with his hand, carefully wrapped it, and handed it to Kowloon.

"Mr. Peng, have you forgotten our agreement at the beginning? you just need to give me the "Yunlin Stone Spectrum", and this stone will be yours. ”

Kowloon knew that there was a drama and breathed a sigh of relief.

"Hey, how did I forget this, okay, I just happened to have this book with me, here it is! ”

After speaking, from the briefcase he carried, he carefully took out the book, put it in Jiulong's hand, and told Jiulong to protect this book and not break it, this is a very collectible book.

After speaking, he snatched the stone from Jiulong's hand, loved it, stroked it left and right, and was very satisfied.

Jiulong was even happier that he had obtained the cheats he had been dreaming of, and he would definitely cherish them.

This is a rare book, the line-bound book of the Ming Xin'an Cheng Zhi periodical, written by Du Juan in the Song Dynasty, as soon as Kowloon received it, he saw the vertical traditional version without punctuation marks in it, and he couldn't help but have a big head and frowns.

Mr. Peng smiled when he saw Kowloon's appearance and gave Kowloon a detailed introduction.

"Yunlin Stone Spectrum" was written about 1118-1133 A.D., is the most complete and richest stone spectrum in ancient China, the whole book is about 14,000 words, involving a total of 116 kinds of famous stones.

The author examines the origin of these famous stones in detail, and also details their respective characteristics in terms of their method of use, shape, color, texture, sound when struck, hardness, texture, luster, crystal shape, transparency, hygroscopicity, and use.

It is also classified according to its properties, divided into limestone, stalactites, sandstone, quartzite, agate, crystal, pyrophyllite, mica, talc, shale and some metal minerals, jade fossils, etc.

The stone sources recorded in the book covered a wide range of 82 states, prefectures, armies, counties, and regions at that time.

The scientific value of "Yunlin Stone Spectrum" is prominently reflected in its description of the properties of minerals and rocks.

For example, the description of the optical properties of the Bodhisattva stone is "its color is clear and clean", "it reflects the sun, there are five colors of round light", "or as big as jujube chestnut, then the brilliance is faint, there are small as cherry beads, and the five colors are gratifying".

Bodhisattva stone is crystal, which is a transparent quartz crystal. When sunlight passes through the crystal, dispersion occurs, creating a "five-color round light".

There are many descriptions of the color of the stone, including white, cyan, gray, black, purple, blue, brown, yellow, green, etc.

In addition, there are differences in color shades, such as dark green, light green, turquoise, slightly purple, slightly black, slightly green, slightly gray black, etc.

He also saw that the color of the stone will change after weathering, and the color of the newly unearthed Lingbi stone is pale and blue, "if the exposed place is exposed for a long time, the color will turn white."

Du Juan pays attention to the sound of stones, and often knocks on stones, and the results are "sonorous", some "sound", some "slightly sound", some "clear sound", and some "silent".

According to the statistics of the author of this article, most of the limestone recorded in the book has sound, and some of the sound is clear.

Soft shale sounds low or silent, hard shale sounds high.

Pyrophyllite, talc, crystal, etc., basically do not have the sound of limestone.

Du Juan's editorial description of the hardness of the stone is quite fine.

He distinguishes the hardness of stones with 8 grades: very soft, slightly soft, slightly hard, not very strong, hard, quite strong, very strong, and not allowed to be chiseled.

It is undoubtedly scientific to be able to be so delicate more than 800 years ago.

Du Juan also noticed the thickness of the surface of the stone, which is divided into 11 grades: coarse and dry, mineral dry, quite coarse, slightly coarse, slightly coarse, very glossy, clear, warm, firm, slightly moist, and fine.

For all kinds of strange stones used as rockeries, Du Juan clarified that their origin is due to "wind and wave rush" or "feng shui rush fusion".

He also recorded the technique of people at that time to use feng shui to process Taihu stone: first the Taihu stone was preliminarily processed, carved into the desired shape, and then "re-immersed in the water for a long time, for feng shui washing, the stone is like life".

Du Juan's understanding of fossils is quite high, not only recording fish fossils and marine brachiopod shell fossils - stone swallows, but also clarifying the origin of fish fossils, and clarifying the misunderstanding that the legendary stone swallows can fly with experiments.

These views occupy an important place in the history of ancient Chinese geology.

In addition to the above, the "Yunlin Stone Spectrum" also introduces the uses of various rocks, such as making rockeries, making research screens, making inkstones, and other utensils and toys.

It also describes the methods used by workers to process stone at that time.

"Yunlin Stone Spectrum" is the most abundant stone spectrum in the Song Dynasty, and Du Juan was a very accomplished mineralogical petrology in the Song Dynasty.

"Well, if I introduce it like this, you should be able to read on. ”

Mr. Peng is very proficient in explaining the "Yunlin Stone Spectrum", and it seems that he is already familiar with this ancient book.

"Fortunately, Mr. Peng introduced me so carefully, otherwise I really don't know where to start, thank you so much, I will definitely read it when I go back, by the way, Mr. Peng, where are you going now?"