Today is the 14th day of the lunar month. Although the moon is not the biggest and roundest, it is almost the same. I didn't expect Nong Yue to like the stars instead of the moon.

"Okay, I'll watch the stars with you tonight, but is there any saying about watching the stars?"

"Others often look at the moon at night, but those who notice the stars are mostly Taoists."

When Nong Yue heard Li Xiuzhu's agreement, the smile on her face became even sweeter, but she said, "The first time I fell in love with the starry sky was when I was a child in the summer... I saw the Milky Way."

"That kind of beauty is something that even the moon cannot bring me. Later, I fell in love with the starry sky."

“Even if I can’t see the Milky Way from autumn to spring, I still like the starry sky.”

"For this reason, I also learned about the starry sky."

"Three Enclosures, Four Symbols, and Twenty-Eight Constellations."

"This seemingly chaotic starry sky has its own unique order, which is so fascinating."

"It's a pity. I've been watching them for so long, but I don't know anything else except that they have a fixed order."

"A few days ago, my sister Xiaomeng and I learned about the Taoist star-gazing technique, but we have only just begun to learn it."

Li Xiuzhu smiled upon hearing this and said, "To be honest, the stars that I know and the stars that Taoists know are two completely different things."

"Ah?" Nong Yue felt a little numb. She didn't expect Li Xiuzhu to say such explosive words right away, but she was more curious about the answer.

"Li Lang, what do you know about the stars?"

After Nong Yue finished speaking, Li Xiuzhu noticed someone before he even opened his mouth.

Li Xiuzhu turned around and immediately saw Xiaomeng.

At this time, Xiao Meng looked at the two of them with a cold face, with no sadness or joy on her face, as if they were just strangers passing by.

But Li Xiuzhu knew that Xiaomeng had just come here using Qinggong, so the most likely possibility was that she appeared because she heard Li Xiuzhu say that the stars he understood were different from those of Taoism.

"Well, you want to listen too, come here."

Nong Yue was startled, and subconsciously looked back and was startled again.

"Sister Xiaomeng, why are you here? When did you come?"

Xiao Meng's feet flashed, a shadow passed by, and the person appeared in front of the two of them.

She did not ignore Nong Yue's words, nor did she feel embarrassed for disturbing the two of them. Instead, she spoke calmly and truthfully: "I just came here and heard my husband say that the stars he understood were different from those of the Taoists."

“Hmm…”

Without waiting for Nong Yue to say anything, Xiao Meng looked at Li Xiuzhu and continued, "What do you know about the stars, my husband?"

Li Xiuzhu smiled and asked, "What do you think stars are?"

The two were stunned at the same time, not understanding what Li Xiuzhu meant.

But at the same time, he fell into deep thought.

"Aren't stars just stars? What else could they be?"

Unlike Nong Yue's inner voice, Xiao Meng's mind was simple and she basically didn't express any inner voice. Instead, she answered, "Is it a meteorite? Or meteorite iron?"

This was the conclusion Xiao Meng came to based on the records of stars falling from the sky in ancient books.

Li Xiuzhu neither nodded nor shook his head, but gave the answer directly.

"Whether it's meteorites or meteorite iron, they are actually mostly the same as what our Great Zhou can produce. There are only a few things that the Great Zhou doesn't have."

"And the reason why heavy meteorites or meteorites are formed is that you can imagine it as a mountain of unsmelted iron ore."

"They gather and compress under the pressure and high temperature generated by the combustion during landing, just like forged steel after thousands of hammerings by a top craftsman."

Xiao Meng frowned and asked, "My husband, do you mean that the stars are big circles?"

Li Xiuzhu shook his head, thought for a moment, and then chose his words carefully before speaking: "That's not quite accurate. The stars are stone balls, huge stone balls."

Hearing this, Nong Yue frowned and asked, "That's impossible. Stars shine. How can a stone ball glow?"

It’s over. The Little Sunflower Class has started. I’m afraid I won’t be able to explain it clearly in a short time.

And because of the astronomical telescope, it might be difficult to convince them.

Fortunately, he had made a lot of glass mirrors during his marches and battles. Although the specifications were not quite suitable, as long as they were melted and reshaped and polished with suitable molds, they could produce suitable astronomical mirror lenses.

Li Xiuzhu thought for a moment and said, "What I said may sound a bit empty. I'll go make something and watch the stars with you guys tonight."

"By the way, call everyone. I don't want to have to explain it again later."

Nong Yue nodded when she heard this. Although she would not be the only one watching the stars at night, she still found it extremely attractive to know the secrets of the stars.

There is no wrong version in the 1619 book forum!

Xiao Meng asked, "Can I stay and help you?"

Li Xiuzhu shook his head at first, but then nodded.

Because in addition to making the lenses, the lens barrel also needs to be made. If the flame wants to melt these things, it would be best to have an expert to pull the fan.

"Come with me."

The two of them appeared in Li Xiuzhu's small workshop quickly, one after the other.

In fact, it was just a converted firewood shed, with many tools inside, including a furnace, crucible and blower.

The reason for using a woodshed is that except for the door, it is surrounded by mud brick walls, so it is not afraid of fire.

Li Xiuzhu mixed the baking soda and glass evenly and poured them into the homemade crucible. He then said to Xiaomeng, "If you want to melt the glass in a short time, you need a higher temperature, so you need to blow air as quickly as possible to raise the temperature inside."

"Of course, you don't have to go too fast. Just keep a steady speed of a large fire."

Li Xiuzhu did not waste space. In addition to melting glass, he also melted copper.

These coppers are used to make the barrel of astronomical telescopes. As long as they are made thin enough, they will not be too heavy, but they will need to be made of thick and heavy frames, which are not very flexible.

Xiao Meng didn't expect to be dragged to make a fire, but she didn't feel burdened. After hearing this, she squatted down and sat on the small stool next to the blower.

Li Xiuzhu was also busy, looking at the wordless book and adjusting the concave and convex mold of the lens.

But it can only be adjusted for one second, as current technology does not allow it. This is the most he can do, and he will need to do fine grinding and polishing afterwards.

Fortunately, I have the inner strength in my hands, so I'll learn about the manual grinding wheel.

The props he used for his evening lectures included candles and bronze mirrors, and the number of them was quite large.

After the softened and fused glass was cut and poured into the mold, Li Xiuzhu asked Xiaomeng to collect the bronze mirror candles.

Ten bronze mirrors and candles should be enough. This is not a difficult task. The women at home have enough mirrors.

The copper juice is also available. Compared with the lens, the lens barrel is much simpler. Just spread a thin layer of juice and roll it up to shape after it cools down.

Li Xiuzhu spent the entire afternoon in the small workshop, and he only finished his work by dinner time.

It was definitely impossible to achieve such precision, but he tried and was able to see most of the planets in space.

It's mainly just an explanation, there's no need to be so persistent.

(End of this chapter)