save the bachelors

Chapter 4326 4328 [Telescope]

Li Xiuning then took it and tried it, and was also amazed by the effect of the telescope.

"This thing can see things in the distance so clearly. If it is used on the battlefield, wouldn't it be possible to detect the enemy early and see through the enemy's strengths and weaknesses?" She immediately thought of the key role of this thing.

This telescope can see clearly objects several miles away, so it can discover military intelligence and enemy movements earlier, and plan and prepare earlier.

As the saying goes, speed is of the essence in war. As long as you seize the initiative, you can often defeat the strong with the weak and the slow with the fast, thus winning the war. Therefore, this thing is not just a toy, but a powerful weapon on the battlefield.

"Kou Zhong, what kind of magic is this?" Song Yuzhi asked curiously.

"This is not a magic trick, this is the study of things to gain knowledge." Xiang Nan waved his hand and smiled, "These two lenses are convex lenses, polished with transparent crystal.

When light hits a convex lens, it refracts and converges at one point. When it passes through another convex lens, the light refracts again and enters the human eye, allowing the person to see distant objects. "

Li Xiuning and Song Yuzhi looked at each other in confusion, totally confused.

Seeing this, Xiang Nan asked someone to bring paper and pen and started making a schematic diagram of the telescope.

"The refractive index of light in different objects is different. For example, when we look at fish in the water, they are just swimming there, but when we want to catch them, we have to touch under the fish to have a chance of catching them." Xiang Nan explained, "This is because the refractive index of water is greater than that of air."

"I see." Li Xiuning and Song Yuzhi both nodded.

Both of them had caught fish before, and they knew that when catching fish, they had to go deeper to have a chance of catching fish.

It's just that although they knew this, they didn't know the reason behind it. After Xiang Nan said this, they finally understood.

"The refractive index of light in crystal is different from that in air. Add in the refraction of the convex lens, and the change in light is even greater." Xiang Nan explained, "Assuming that the light is emitted in parallel, after being refracted once by the convex lens, the light will become like this. After being refracted a second time by the convex lens, the light will become like this. In this way, things far away will seem close."

"Kou Zhong, you are truly a genius and extremely smart. It is amazing that you were able to find out such a thing." Li Xiuning and Song Yuzhi both exclaimed.

Everyone knows that you need to go deep to catch fish, but no one has explored the principle behind it. It is just a habit. Unexpectedly, Xiang Nan not only found out the principle, but also made a telescope based on it.

Such intelligence and talent are truly admirable. He is worthy of being taught by the gods and is indeed a gifted person.

"It's just so-so." Xiang Nan waved his hand and smiled, "I just like to guess randomly."

……

"Xiuning~" At this moment, a familiar male voice sounded.

Xiang Nan looked back and saw that it was Chai Shao.

Although he greeted Li Xiuning with a smile, his eyes were fixed on Xiang Nan with a vigilant look.

"Chai Shao~" Li Xiuning nodded and pointed to Xiang Nan next to him, "Do you still remember Kou Zhong?"

"How could I not remember?" Chai Shao nodded and smiled, "After several months of separation, Young Master Kou is still so simple, it's really admirable~"

Seeing that Xiang Nan was still wearing linen instead of silk, he knew that he was still a poor boy, so his face was full of contempt.

"Mr. Chai still likes to judge people by their appearance." Xiang Nan also laughed.

But the fact is that it is because he does not care about what he wears. Otherwise, silk would not be so rare. Clothes made of gold thread, silver thread, and lotus root silk are just a piece of cake for him.

"Chai Shao~" Li Xiuning stopped them, not wanting Chai Shao and Xiang Nan to continue bickering.

"Oh, by the way, Xiuning, I heard that the emperor ordered you to pay heavy taxes to enrich the treasury?" Chai Shao asked. "Yes, the court is afraid that our Li family will become too powerful, so they asked us to pay heavy taxes." Li Xiuning nodded, "But now there is war and chaos, and the people are living in poverty. We, the Li family, can't even take care of the people, so how can we bear to increase taxes on the people. For now, we can only reduce the size of the soldiers and the food and wages, and hope that we can unite as one and overcome the difficulties together."

"In this way, the emperor will have money to expand his troops, store food and fodder, and reduce the power of the various tribes. It really kills two birds with one stone." Xiang Nan nodded.

"Yes, there are deserters in our Li clan’s military camp. My father and brothers are worried about this matter." Li Xiuning nodded.

In ancient times, in order to boost the morale of soldiers and encourage them to fight to the death, they also needed to pay them silver.

In addition, food, weapons, horses, fodder, chariots, etc. all require money. That is why there is a saying that "war is fought with money".

"Don't be afraid, Xiuning. Our Chai family will pay for this money." Chai Shao said immediately upon seeing this.

"Really, Chai Shao?" Li Xiuning was shocked when she heard it.

This time, the Li family had to pay a heavy tax of 300,000 taels of silver, which was no small amount of money.

"How could I lie to you, Xiuning?" Chai Shao said immediately.

"How can I repay you..." Li Xiuning was very embarrassed.

"Xiuning, can't you feel my feelings for you?" Chai Shaoze looked at Li Xiuning affectionately.

Li Xiuning felt a little embarrassed by his burning gaze and couldn't help but turn her head to look at Xiang Nan.

Although she knew Chai Shao's feelings for her, she had no romantic feelings for him, but instead developed a good impression of Xiang Nan.

"Yuzhi, the weather is nice today, let's go out for a walk." Xiang Nan said with a smile, "I'm sure you're a little annoyed staying in the Duke's Mansion all day."

"That's right, let's go~" Song Yuzhi nodded and smiled.

Although she is of the same age as Li Xiuning and both come from aristocratic families, her personalities are completely different.

Li Xiuning has been sensible since childhood and has worked hard for his family. But Song Yuzhi is different. The Song family is content with a corner and dominates Lingnan, and has no ambition to compete for the Central Plains.

With the strength and strategy of Song Que, the Heaven Sword, he was able to overwhelm the world without any difficulty. Therefore, Song Yuzhi grew up with the love of his father and the care of his brother, and he had no worries at all.

Therefore, she does not have to worry about the family business and is naturally more in the mood to play.

……

At that moment, Xiang Nan and Song Yuzhi left the Duke's Mansion and strolled around Taiyuan City.

Xiang Nan has his own ideas about coaxing a lady from a noble family like Song Yuzhi.

It means that if she has seen the world's prosperity, take her to play on the carousel; if she is not worldly-wise, take her to see the world's prosperity.

As the eldest daughter of the Song family, Song Yuzhi has naturally seen the prosperity of the world, so in order to give her a sense of freshness, take her to do the simplest and most romantic things.

Xiang Nan took Song Yuzhi to Jingyue Lake. The two rowed, chatted and fished on a boat. Then they had a picnic in the woods by the lake and ate the fish they caught.

It has both wildness and gameiness, and is naturally fun.

Anyway, Song Yuzhi had a lot of fun.