On this day, Zou Yixiu and Yi Bai came to the door of the commander, each carrying a bamboo basket in their hands, and sorted out their clothes in front of the house before stepping in.

Looking at their posture, they knew that they were looking for Ran Fang, and after the guard at the door stepped forward to ask for their names, they ran in happily.

After a while, he happily took the two of them to see Ran Fang.

This made Zou Yixiu and Yi Bai a little puzzled, when should they be able to have this kind of treatment in the command envoy's mansion?

However, the two of them still saluted Ran Fang very respectfully: "See the commander." ”

At this time, Ran Fang, who was in the study, was holding a paper tube in his hand, and there were two things that looked like glass, which were placed in the paper tube.

Seeing the two of them coming in, Ran Fang waved his hand casually and put the paper tube in Zou Yixiu's hand, "Look at it, how is this thing?" ”

Zou Yixiu picked up the paper tube, looked back and forth left and right, and communicated softly with Yi Bai: "What is this?" I've never seen it before. ”

"Do you know what it is?"

Yi Bai took the paper tube in his hand, looked up and down, left and right, and shook his head suspiciously.

"I've never seen it either."

In the end, the two studied it a few more times, and Zou Yixiu respectfully raised the paper tube with both hands, and said in the direction of Ran Fang: "I am stupid and can't see through the mystery of this thing. ”

"Please tell the commander."

Ran Fan smiled, took the paper tube again, closed his left eye, put the paper tube on his right eye, and turned it around a few times casually.

"This is the telescope."

"It's just a simple version, and although you can't see the moon, you can see things in the distance."

"Why don't you try it in the yard?"

With that, Ran Fang took the lead and walked into the courtyard.

Zou Yixiu and Yi Bai also followed closely behind Ran Fang and walked out.

Zou Yixiu bowed down and took the telescope in Ran Fang's hand, learned Ran Fang's posture, closed his left eye and placed the telescope in the position of his right eye.

Just a second later, he couldn't help but exclaim.

"This ...... It's true?! ”

Yi Bai didn't know what was going on, but when he saw Zou Yixiu involuntarily holding the posture of looking around, a burst of curiosity still surged in his heart.

He really wanted to grab it, but because Ran Fang was here, he still let go of the doubts in his heart.

"Brother Zou, can you show me?"

Hearing Yi Bai's words, Zou Yixiu glanced at Ran Fang and reluctantly handed the telescope to Yi Bai's hand.

Like Zou Yixiu, Yi Bai couldn't help but exclaim "wow-" when he saw the scene in the telescope.

He took the telescope off, looked at the distant scene with his eyes, and placed the telescope in the place of his eyes.

It seems that I can't believe that things more than ten feet away can be seen clearly.

Switching back and forth a few times, feeling the gazes around him, he put the telescope down brightly.

"Commander, this thing is a telescope?"

"It's amazing!"

Ran Fang nodded and explained with a smile: "Indeed, this is the telescope, which can clearly see the scene in the distance. ”

"The astronomical telescope is the same as a telescope, except that the astronomical telescope can see farther, even above the moon."

"There are two pieces of glass of different thicknesses in this paper tube, and changing the position of these two pieces of glass can also get unexpected results."

"What I did was just a suggestion, Yi Bai, you are a member of the Mo family, and you know the most about some utensils, you can try to make a small cylinder that can be moved."

This thing is already magical enough for Zou Yixiu and Yi Bai, and there is something even more magical than this, they can't describe Ran Fang with admiration.

Zou Yixiu took the telescope again, looked back and forth a few times, and couldn't hide the joy on his face.

And Yi Bai was overjoyed when he heard Ran Fang's order, this is a rare good thing.

He immediately nodded, "Well, I'll start doing it when I get back." ”

"I'm sure I'll be able to satisfy my husband."

Ran Fang looked at them and said with a smile: "The best use of this thing is that it can be used in navigation or battle in the future. ”

"In this way, it can be used for its real use, if it is only used as a plaything for ordinary times, it is a bit of a tyrannical thing."

Hearing this, Zou Yixiu immediately understood what Ran Fang meant, and he also nodded, and said in agreement: "That's true." ”

"At such a distance, you can see clearly, so it is naturally no problem to see the enemy army."

"Even from a distance, we can see where the enemy leader is, and if we can make a crossbow that can shoot farther, wouldn't it be able to surprise us?"

"When the time comes, we will definitely be able to take the initiative in the big war!"

"The commander is really resourceful!"

"I can't wait."

Ran Fang smiled, turned around and returned to the study, and didn't take Zou Yixiu's straightforward praise to heart at all.

"Alright, you've seen the telescope, it's time to get down to business."

As he spoke, his eyes fell on the basket that the two of them were holding, and asked suspiciously, "What's in there?" ”

Originally, Zou Yixiu and Yi Bai thought that Ran Fang would not notice, and the matter passed.

Who would have thought that this Ran Fang was going to talk about the next thing, but he turned around and came back.

Zou Yixiu lifted the cloth on the basket with some embarrassment, took out the contents of the contents, and looked at Ran Fang's eyes a little embarrassed.

"This ...... The last time we came to thank the commander, we didn't take anything, and the commander didn't care. ”

"Then the two of us thought, come today with some things to thank the commander."

"Mine is some classics of the Yin and Yang family, which are different from those of the Xiushu, they are part of the more classics, I copied some of them, and I want to give them to the commander."

"But when I see the telescope you made, I think I'm a little ...... I can't get on the table. ”

After he finished speaking, Yi Bai also opened his basket, and at first glance, it was the same thing as Zou Yixiu.

"Mine is the practice of some of the Mo family's tricks, I'm afraid that even the commander won't be able to use it."

There was joy in Ran Fang's eyes, what he was able to do was just because he had learned enough before.

But these things of theirs, which are really the wisdom left by the ancients, are completely different.

Maybe we'll be able to give him some ideas.

However, he still has to keep his upright temperament, and the expression on his face doesn't show too much.

He just said lightly, "Okay." ”

"Submit it, the official has never seen this, you two have a heart."

In the eyes of Zou Yixiu and Yi Bai, this is just that Ran Fang was worried that they would feel embarrassed, so he took the initiative to find a step.

The gratitude to Ran Fang in the hearts of the two of them was even deeper.

"Thank you, Commander."

Ran Fang thought that after they left, it would not be too late for him to study slowly, these things could not be learned at a glance.

He took out a drawing from his desk, put it in front of the two of them, and said, "You two look at it, how is this thing?" ”

"If you feel that there is no objection, when the loser comes, you can do it together."

The two of them picked up the drawings at the same time, the paper was larger than the ones they were using, and it felt better to the touch.

Before they could sigh at the merits of the paper, they were shocked by the patterns drawn on it and the annotations on it.

"This?!"

"What is this?"