Yunfeng met everyone's expectant gazes and smiled slightly: "Actually, it's not difficult to say. Just polish the colorless and pure jade (crystal) into concave and convex circular lenses, and then place them on both ends of the cylinder.

One end of the cylinder is large and the other is small. The small end is the eyepiece and the large end is the objective lens. As for the curvature of the concave and convex lenses and which end they are placed on? Since it is unknown in the sect's classics, the Zhuge sect leader needs to figure it out on his own, but there is no problem in thinking about it.

Then add concave and convex lenses in the cylinder. If matched properly, the magnification effect can be doubled. This thing is called an astronomical telescope. Of course, when Zhuge Sect Master started, he could first make a small astronomical telescope to test the effect. When he knew that he would

It’s no lie!”

"Oh? Is it that simple?" Zhuge Xian asked in disbelief.

Yunfeng nodded and said, "Master Zhuge, why don't you give it a try?"

"Quick, quick! Master Zhuge, get Yuying quickly, let's start now!" Qiao Xiu couldn't hold it anymore and kept urging.

Zhuge Xian smiled bitterly and spread his hands: "Jade ying is a rare thing. It is rare in the world and there is currently no such thing in the world!"

The opportunity to observe the stars clearly was right in front of him, but he couldn't see or touch it. Qiao Xiu was so anxious that his whole body was smoking, and he couldn't help but wonder: "You old guy, are you reluctant to take it out?"

"Go away! How can I be this kind of person?" Zhuge Xian flicked his sleeves and his face showed displeasure.

Yunfeng had no choice but to advise: "Teacher, don't be impatient. We'll think of a solution when we return to Shanggui. There should be jade ying in the treasury." Yunfeng was quite confident. With so many jewels robbed, if there were no crystals, he would be able to connect them.

I don’t even believe it myself.

Zhuge Xian also looked impatient. He was also an astronomy enthusiast. He unconsciously looked at the cylinder standing in the middle of the armillary sphere. He suddenly had an idea and asked: "What if crystals are not used and other pure and transparent objects are used?"

To replace it?"

"Huh?" Yun Feng was startled and said casually: "Of course you can, but what is it? Master Zhuge, please explain clearly."

Not long after the start, he returned with a transparent wine cup in his hand, handed it to Yun Feng and said, "This is a glass cup. If glass is used instead of crystal, will it affect the observation effect?"

Yunfeng's complexion suddenly changed. This was clearly a glass! And it was also a tall glass! He was really surprised. Glass actually existed in the Wei and Jin Dynasties! In the common perception of the world,

,Glass was introduced to China only in the Ming Dynasty.

Zhu Ge

The color is greenish. Since the Han Dynasty, the glaze firing technology from the Western Regions was introduced to China, so that transparent glaze can be fired.

Clear and colorless sulfur glass, however. Since it is much more difficult to make transparent sulfur glass than porcelain, people in the world often don’t know about it. Folks still mainly make opaque glazed tiles. In terms of value, a piece of transparent sulfur glass is several times more valuable.

Yunying of the same quality. And this glass cup is a relic of Cao Wei. It has been around for nearly a hundred years."

Playing with the glass cup in his hand, Yunfeng knew clearly that glassware was rare and precious at that time and could be used to show off his wealth. Zhuge Xian did not boast and couldn't help but take a closer look. The upper half of the cup was engraved with exquisite patterns, with

Obvious Gandhara (now Pakistan)

Peshawar area) style should be the result of cultural exchanges between the East and the West. The lower half is transparent and has no decoration. If you pour wine into it, you can clearly see the color of the wine. This reminds Yunfeng of a well-known saying: Grape

Glow-in-the-dark cup of fine wine, drink Pipa immediately!

The whole glass glowed with a faint purple color. This was due to the oxidation of the metal ions contained in it over time. As he looked at it, Yunfeng frowned again. He found that there were some small details hidden in it.

Bubbles do not affect the wine glass, and can even enhance its appearance. However, when used in telescope lenses, there cannot be even a single bubble.

Yunfeng turned around and asked, "Can Master Zhuge know how to make colored glaze?"

Zhuge Xian stroked his beard and smiled and said: "There is a disciple in my sect who is skilled in making glass. If it is possible, I will order him to make it immediately!"

Yunfeng was noncommittal and asked: "Can the bubbles in the glass be removed?"

"This...?" Zhuge Xian was startled, and then responded: "I will tell you when I call them here and ask them!" After that, he gave a few instructions to the outside.

Not long after, two disciples hurried over, and Zhuge Xian asked bluntly.

The two looked at each other, and one of them said: "Back to the master, there are many reasons for the bubbles. One is the melting process, the other is the forming process, and the third is that the material contains impurities. We have tried many methods for this.

, such as strict screening of materials and soil, improving the firing process, etc., and also found that if timely investment is

Adding a small amount of Glauber's salt or iron powder can reduce some of the bubbles, but it still cannot be completely removed. After careful observation and comparison, it is speculated that it is probably caused by insufficient flame intensity, so that the material and soil cannot be fully melted. However, how to increase the flame intensity

, I really don’t know where to start.”

Zhuge Xian's face turned ugly. His hope was right in front of him, but it was ruthlessly shattered. However, he could not blame these two disciples. It was too difficult to raise the temperature of the flame! He could not help but frown in thought, while the Qiao family and his son

Communicating quietly.

The atmosphere in the room was dull for a while, but Yun Feng turned to the two disciples and asked, "What kind of fuel is used to make colored glaze?"

A disciple gave a respectful salute: "Return to the general, burn it with charcoal first, and then with high-quality coal. The effect of using coal is better than charcoal."

In this way, Yunfeng can roughly figure out that the maximum burning temperature of charcoal is about one thousand degrees, and the burning temperature of fine coal is about one thousand three hundred degrees, which may not meet the requirements of fully melting glass. And he himself

The kerosene bombs used in the military are made of petroleum. The burning temperature of petroleum can reach over two thousand degrees, which is more than enough to melt glass!

Yunfeng suddenly felt confident and raised his hand to Zhuge Xian: "Master Zhuge, the firepower of the kerosene bombs used by this general is much greater than that of fine coal. It is expected that it will be fine if the colored glaze is fully melted."

"Oh?" Zhuge Xian frowned and asked repeatedly: "Has the general carried it?"

Yun Feng shook his head and said: "Never, but if Master Zhuge needs it urgently, I will order someone to get it."

Zhuge Xian was silent and silent, with a look of struggle on his face. Everyone couldn't help but look at each other. What's so embarrassing about this?

After a long time, Zhuge Xian let out a long sigh and looked at Yunfeng: "General, there is no need to bother. When he returns in the day, my Tianji Sect will move to Shanggui with you!"

"Ah Weng, you..." Zhuge Fei couldn't help but raise his head and speak, and then he blurted out, but was interrupted by Zhuge Xian: "Nanzheng is a place of refuge, so you can leave as soon as you leave, not to mention you, Jiang,

The three uncles Jiang and Fei have left one after another. It's not interesting for me to be alone as a father. If you all leave, I can go to Shanggui to take care of you."

"Ah Weng!" Zhuge Fei's pretty face turned red for a moment, but there was a hint of joy in her heart. It was obvious that her father had acknowledged the fait accompli.

What Zhuge Fei and Yun Feng didn't know was that at Jiange last year, the old guy Jiang Fa had secretly reported the strange situation between the two back to Nanzheng. This news immediately caused a sensation. Everyone, including Zhuge Xian, was worried.

They were blessing each other from afar, hoping that good things would come to pass.

Although Zhuge Xian had the integrity that a Confucian scholar should have and disdained to cling to power, getting married to Yunfeng was another matter. Marriage was a very important relationship in ancient China. Both of you and your husband's family would be prosperous and disadvantaged.

Everyone is harmed. For example, if there are three clans, father, mother, and wife, everyone will do something wrong together.

Death! Moreover, with this relationship, Zhuge Xian and a group of disciples unilaterally believed that it would be of great benefit to them to become officials. However, everyone had more or less doubts in their hearts that Yunfeng had great power.

, so handsome, why did he fall in love with an old and blind woman like Zhuge Fei?

Next, Zhuge Xian saw that everyone seemed to have lost interest in the Armillary Sphere and the Armillary Elephant, so he arranged for everyone to live in the house opposite, but then invited Yunfeng, Zhang Lingyun and Zhuge Fei to the study.

Zhuge Fei was quite nervous. Although he could roughly guess Zhuge Xian's purpose, at this moment, his little heart thumped uncontrollably as if he was about to jump out of his chest.

Zhuge Xian stroked his beard and said nothing, looking outside the house. Yunfeng cursed in his heart, this old guy was making a show of himself, so he couldn't help but raise his hands: "Why did Master Zhuge call me?"

Zhang Lingyun was quite dissatisfied with Yunfeng's small family spirit, thinking that you had already made his daughter pregnant, so why are you still pretending to be crazy and acting stupid here? She immediately glared at him and blamed him: "Yunlang, why do you still call your uncle the head of the sect?"

Is it time to change your tune?"

"Haha~~" Yunfeng smiled awkwardly and gave a solemn salute: "My uncle is here, please bow to my son-in-law!"

Zhuge Xian then turned his gaze back, stroking his beard and said: "Okay! Since you recognize me as your uncle, I will tell you to break the mountain! Not much else to say, I will marry Fei'er for you within three days.

,how?"

In an instant, the three masters and servants of Zhuge Fei were ashamed and happy, with slight tears in the corners of their eyes. It has been more than a year since I followed Yunfeng on the expedition, and I have always thought about it. Although I have skin in Jiankang,

However, with Zhuge Xian’s personal promise of marriage, the meaning is completely different. This is a status, and it can be regarded as a positive result!

Zhuge Fei even recalled that she had divined the motion of the red Luan star. It must be that the gods and Buddhas in the sky took pity on her, so they gave her a wishful husband. However, she still had a little regret, Yunfeng's appearance

Her consciousness was very vague, and Zhuge Fei's impression of people only came from before she lost her sight at the age of six.

With a self-deprecating smile, Zhuge Fei immediately put this regret behind his mind. What does it matter if he can't see? He can recognize this person through his smell and sound!

Yunfeng seemed to understand Zhuge Fei's thoughts. He looked at her deeply and saluted her again: "My son-in-law, thank you uncle!"

Zhuge Xian nodded with satisfaction, turned to Zhang Lingyun and said: "Niece Lingyun, logically speaking, you are the principal wife. Fei'er should not have paid homage to Duan Shan, but please remember that she has been blind since she was a child.

Please bear with me for a while."

Zhang Lingyun smiled slightly and said: "My niece and sister Zhuge are like sisters. Now that sister Zhuge can find a good home, it's not too late to be happy. Please don't worry, uncle!"
Chapter completed!