Su Min and Prince Chengdu hurriedly tidied up their clothes and stood up from the seat.

Midou's cat swooped into the house with a "whoosh" and disappeared in the blink of an eye.

I saw that Old Man Lin was dressed in a clean and neat light gray robe, wearing a square scarf, and holding a small box in his hand.

Mrs. Lin wore a jade-colored collared long jacket and a tooth-colored woven golden horse skirt, holding Old Man Lin with a smile.

"Teacher, teacher!" The two teenagers bowed timidly to them, wondering if they had seen or heard anything.

Old man Lin naturally didn't see anything, because when he opened the door, the two young men were looking at each other.

He glanced at Mrs. Lin and knew that the two silly children couldn't help it, so he coughed as a reminder.

"Come on, come on, you hurry up and pack up the piano and come into the house, I have something good to show you." As if he remembered something, Old Man Lin instructed the two children to do something.

"Good!" Su Min and Wang Zicheng breathed a sigh of relief in their hearts when they saw that he didn't say anything.

I don't know what Old Man Lin wants to show them, the whole person is mysterious.

After they finished cleaning up, they put their guqin on the piano table in the room, and then gathered around Old Man Lin.

Old man Lin carefully placed the small box he had brought back on the table, and beckoned Su Min and Wang Zicheng: "Come, you guys first guess what this thing is." ”

Su Min and Wang Zicheng looked at each other, they were not immortals, so naturally they couldn't guess the contents of the box, so they shook their heads.

"Oh, guess what! The teacher won't eat you again! Old man Lin looked at the two people who looked at him like wooden people, and he shook his head, and instantly became a little angry.

"Don't scare the kids!"

"Minmin, Zicheng! Let's take a look at this painting first. Mrs. Lin walked out of the bedroom with a smile on her face, holding a framed object in her hand, and she didn't know whether it was a painting or calligraphy.

She walked up to Su Min and Wang Zicheng, turned the frame over, and revealed its original appearance.

"Wow!" Su Min exclaimed.

I saw a picture of flowers and birds framed in the frame, the picture is blooming pink flowers, the shape is elegant and beautiful, the shape should be in full bloom oleander, and there are two butterflies of different colors flying next to the flowers.

The lines of this painting are old but agile and elegant, the colors are bright but good, the flowers are beautiful and blooming, and the faint fragrance is like a fragrance, so it will attract butterflies.

The name of the painter is written in the upper left corner of the painting, but because of the scribble, Su Min and Wang Zicheng did not distinguish who it was for a while.

It's just that the paper looks a little old, but the paint in the painting shows no signs of fading.

"I wonder which teacher made this painting?" When Wang Zicheng sees the works of famous artists, he will habitually ask the reason.

Old man Lin took the painting from Mrs. Lin's hand, glanced at it and said, "The country of abundance, Dafeng Hall will pass on the disciple again, surnamed Liu." You might guess who? ”

"I know, I know! It's Mr. Liu Yeshi! Su Min heard Old Man Lin's prompt, and his eyes flashed with joy.

She learned to paint with her master since she was a child, and naturally she has also heard of Dafengtang, and she also knows many famous painters in Dafengtang.

Old man Lin smiled, thinking that she knew the answer: "Then do you know what is in this box?" ”

The prince saw that Old Man Lin was mysterious, and when he saw Mrs. Lin showing them the strokes, he roughly guessed what was in the box.

It's just that Su Min didn't understand the meaning, she looked at the painting, then looked at Old Man Lin and said, "Could it be that this is a butterfly specimen?" ”

Wang Zicheng and Mrs. Lin both shook their heads helplessly, but Old Man Lin patted her head angrily: "Say you're a stupid girl, you're really a stupid girl!" Given so many hints and still don't know what's in it."

"I guess this box contains rare mineral pigments, I wonder if the students guessed correctly." Seeing Su Min's embarrassment, the prince lowered his head and hurriedly opened his mouth.

Old man Lin squinted his eyes and shook his finger at him and said, "It's worthy of being from the Wang family, guessing so accurately!" Since you guessed correctly, the teacher will give you this paint! ”

When the prince saw that he was going to give this paint to himself, he was shocked: "By all means, the student's technique is clumsy, and he really doesn't deserve it." ”

"Besides, this pigment is now scarce in raw materials, and people need to go up the mountain to find ore, and they may not be able to find it, please forgive the students for not daring to do it." After he finished speaking, he got up and saluted Old Man Lin.

He used to hear from his teacher at home that because of the scarcity of this pigment, many painters sought it.

But because there are fewer and fewer minerals now, some colors can no longer be found, so most people dare not use them easily, otherwise it will be really wasted!

"The teacher gave it to you, why don't you want it?" Su Min looked at Wang Zicheng with some curiosity, and asked softly in his ear.

She knows that there are three kinds of pigments in Chinese painting, one is mineral pigments, the other is plant dyeing pigments, and the third is chemical pigments.

She also knew that mineral pigments were hard to find now, so she was annoyed that Wang Zicheng couldn't accept them.

Old man Lin's face was full of a smile of relief, and he pushed the small box in front of Wang Zicheng and said, "Boy, just based on what you said, I will give it to you." ”

"Do you know how much work and how much time it takes to go from hard ore to warm and delicate powder?"

"The students don't know." Wang Zicheng replied honestly, because the pigments they use now are basically chemical pigments.

But he seemed to think of something again, and hurriedly said: "I know that Mr. Qiu Qingnian, the old man of the Qingnian Hall back then, has persisted for this for fifty years, and he is worried that there is no heir, so he runs all over the world. ”

"Awesome, boy, what else do you know?" Old man Lin frowned, feeling that Wang Zicheng was a little unsimple.

As he spoke, he opened the box, only to see that there were some lumps in plastic bags, which were supposed to be legendary mineral pigments.

"I don't know what process and how much time it takes. But I know that mineral pigments are often used in heavy color paintings, because they are resistant to light and climate change, so they can last for thousands of years. ”

"And as far as I know, the colors extracted from the ore are dark, pure, and have a crystal structure, which is why they are so stable."

Old man Lin took a sip of tea with satisfaction, and he didn't know the teacup that came out of him: "Well, yes, I really didn't see the wrong person, you see, this kid knows so much!" ”

His eyes were fixed on Mrs. Lin's face, as if he was showing off to her.

Su Min was even more dumbfounded when she heard it, because she knew some theories, but it would be a little difficult for her to say like Wang Zicheng like this.

"Yes, this pigment had to be crushed, filtered, milled, rinsed, and glued suspended before it could be processed into an extremely fine powder. Just grinding, eight hours a day, and it takes twenty days to grind! ”

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