After I traveled through the book, I was spoiled by five little villains

There is a very small handle on the core replacement slot. Just pull it and gently pull it outwards to pull out the entire core replacement slot.

Qin Yaoguang counted them and found that there were eight replacement cores in total.

She came up with an idea, and what Liu Ming produced was better than she had imagined.

Qin Yaoguang handed the pen to Chunfen and said, "Try it, can you change it?"

The entire refill idea came from her, and Qin Yaoguang's goal was to make it easy for everyone who just got a graphite refill pen to use it.

Chunfen took it, changed it without much effort, and handed it back to Qin Yaoguang.

Qin Yaoguang nodded and said with satisfaction: "Not bad."

Very clever.

"Where is Liu Mingren?" she asked.

"Butler Zeng said that he left after delivering the things, saying that he didn't dare to disturb Your Highness." Chunfen said, "Butler Zeng knew that it was something the master wanted, so he quickly sent someone to deliver it to the backyard."

Qin Yaoguang was slightly surprised.

This person was quite honest and did not take the opportunity to ask for a reward.

It seems that from now on, no matter what happens, we can trust him to do it.

He is capable and has good aesthetic taste. He also knows to put the "Leyang" mark on the graphite pen, but he doesn't take credit for it, which is very worry-free.

"Master," Chunfen looked at the short horizontal lines of varying depths and thicknesses on the pen and asked in confusion, "What do these mean?"

These short horizontal lines obviously have special meanings. The pens in the box are neatly arranged side by side. At a glance, you can see that the one with the lightest and thinnest short horizontal lines is on the far left, and the one on the far right has the thickest and darkest short horizontal lines.

"If I'm not mistaken, it should be the depth written by the graphite." Qin Yaoguang said.

She took out a piece of waste paper and picked up the graphite pens in the box one by one to try them out.

Chunfen was surprised to find that all the handwriting on the paper was black, but some were so light that they were almost gray, with thinner lines; while some were thick and black in one stroke.

"How did the master know this? This is amazing!"

The reverence on Chunfen's face was beyond words.

Qin Yaoguang smiled, put away all the graphite pens, and said, "I just asked him to try, but I didn't expect he could really make it."

The principle is actually very simple, which is the logic of modern pencils, 6H is the hardest and 14B is the softest.

However, the most common hardness is 2H and HB. 2B is used as a special pen for exams because of its suitable hardness.

There was no need for her to explain these, and she couldn't explain them clearly.

Liu Ming's ability to make a graphite refill pen really gave her a surprise. Looking at the ink marks on the paper, the hardness ranged from 2H to 14B, with a total of eight levels of hardness, which was very convenient for her to paint.

With these pens, she can draw sketches without any problem!

Qin Yaoguang was delighted.

"How many boxes are there in total?" she asked.

"Ten boxes."

"Send a message to Liu Ming. I'll order another hundred boxes of these graphite pens."

The current court is controlled by the Grand Marshal, and the upright and humble families are struggling to survive.

She not only wanted to select nobles to form an alliance, but also to gain the support of the upright.

Although the world is vast, it is made up of countless ordinary people. Those honest and upright local officials are the masters of these ordinary people.

It is said that a new emperor appoints new ministers, and the same is true at the local level.

If we can use graphite pens instead of brushes, it will lower the threshold for students from poor families, which is more practical than anything else.

The graphite pen is her stepping stone to the poor, and it is also a deed that will benefit future generations.

Chunfen didn't know what Qin Yaoguang was thinking, he just felt that his master's face seemed to be covered with a layer of holy light, like the compassionate face of a Bodhisattva worshipped in a temple.

"what happened?"

Qin Yaoguang noticed her gaze, touched his face and asked, "Is there something on my face?"

Chunfen lowered her eyes and said: "Your Highness is so beautiful, I am stunned."

Qin Yaoguang was amused by her and said with a smile: "Look at her little mouth, it's as if it was covered with honey."

With a pen, you also need suitable paper.

Xuan paper is too expensive, and it is impossible for ordinary students to use such expensive paper for daily practice.

After thinking about it, Qin Yaoguang found that she really didn't understand what kind of paper ordinary people used to study. The daily expenses of the princess's mansion were far beyond ordinary people and could not be measured.

"Have someone go and buy me all the paper you can buy on the market," she ordered, "from the cheapest to the most expensive, whether you can write on it or not. Buy them all."

Although her orders were strange, Chunfen had long been accustomed to them.

Not long after, before it got dark, several old women came in holding papers of various colors.

Qin Yaoguang took a look and found that it was right to ask people to buy them, as there were many varieties.

Hemp paper alone is divided into two types: white hemp paper and jute paper. The prices range from low to high depending on the craftsmanship.

In addition, there are bark paper of various colors, yellow cotton paper with less flexibility, fine rice paper of white cotton paper, ribbed paper, bamboo paper, mica parchment paper commonly used by scholars, and silk cotton paper used for pasting windows.

Qin Yaoguang put the expensive ones aside first and tried the cheap papers. He found that the graphite pens performed best on the rough-edged bamboo paper.

Bamboo paper is made from bamboo and has a light beige color. Because the material is easily available and inexpensive, it is the most commonly used type of paper among scholars.

Among them, there are jade button paper with uniform white color and ink-resistant mark, Jiajiang bamboo paper with toughness and smoothness, etc. The prices range from high to low.

What Qin Yaoguang was interested in was the cheapest rough-edged bamboo paper.

Because the manufacturing process is simple and the paper surface is rough, it does not absorb ink, so the words are easily blurred and the font is affected. No one would buy it to practice calligraphy unless it is absolutely necessary.

But graphite pens are different.

For pencils, this kind of paper is needed for better coloring.

She drew on a piece of rough-edged bamboo paper with several graphite pens of varying hardness and softness, and soon outlined the bronze auspicious beast gilded incense burner on the desk on the paper.

On the beige paper, the incense burner appears lifelike, with green smoke rising from it.

"Your Highness! Your painting looks so real!" Chunfen was surprised again.

She was not a personal servant, but as she followed the princess, she had seen many paintings, even the original works of the great calligraphers and painters of the previous dynasty.

However, I have never seen anything as realistic as what the master has written.

How to describe it?

Except for the difference in size, the incense burner drawn on the paper is exactly the same as the one on the desk.

Even the light coming in from the window, the shadow of the incense burner, and the spot on the lid are all consistent.

Looking closely, it was not a complete restoration, and the patterns on the incense burner were not depicted, but her instinct told her that this was the incense burner placed on the desk.

Qin Yaoguang picked up the bamboo paper and looked at it against the light. She was very satisfied that her sketching skills were still there.

The Spring Equinox seems magical, but in fact it is just a sketch that can be understood with a little understanding in modern times.

Using only a pencil, as long as the shape is accurate enough, you can use the relationship between light and dark and the thickness of the lines to present a sufficiently realistic object.

Anyone who has learned basic sketching can draw a still life like an incense burner.