Chu Tang: Tell Li Er at the beginning that I am a time traveler

Chapter 38 Chatting
"There is only one way to make Datang become like that in advance."

While talking, Li Chong took out the telescope from his pocket and handed it to Li Er.

Li Er unconsciously took it.

Asked: "What is this thing?"

"Technology."

"Eh... the telescope."

Li Chong corrected him later.

Li Er held the binoculars, looked left and right, his eyes were full of doubts.

Li Chong then told him how to use it.

Only then did Li Er know the function of this thing.

"This thing can be used to sail on the sea and see farther places."

"Of course, it can also be used to observe on land."

"It can be regarded as a military investigative method."

Li Er had never seen this kind of thing before, and he kept fiddling with it.

"With this thing, soldiers don't have to get so close when scouting. Naturally, it won't be so dangerous."

At this time, Li Er also raised a question that everyone would have and asked: "Why is everything you see here upside down?"

Li Zhong analyzed the reason for him: "Maybe it's the focal length? I don't understand the specific reason."

"What does focal length mean?"

"You don't understand it."

But Li Er still looked at him.

Li Chong had no choice but to squat down, break off a branch, and start drawing on the ground.

After Li Chong's explanation, Li Er finally understood a little bit.

But Li Chong himself was trapped in it.

You said, why is it upside down.

This puzzled Li Chong.

After a lot of tossing, Li Chong finally understood.

Theoretically, two convex lenses can indeed see a positive image, but people’s eyes usually look close to the lenses. If they can see outside the focal length of the second convex lens, then the image will become a positive image again. .

Li Chong was pleasantly surprised by his discovery.

Li Er was in a fog.

"Then the question is, how do the telescopes of the later generations manage to see the positive image when they are placed against the lens?"

Li Chong looked at Li Er while thinking.

Li Er also lowered his head and looked at him silently.

Then Li Chong said: "However, this thing is more than enough to take a look at the moon. If your majesty is free, you can use it to look at the moon with the queen at night. Anyway, the crown prince and I have seen it." .”

Speaking of Prince.

Li Er has also felt more and more recently that the prince's temperament has become very good.

"You still think that the crown prince can't be His Majesty of the Tang Dynasty?"

Li Chong dropped the branch and clapped his hands.

"With me here, even a dog, it can be His Majesty of Datang." '

But Li Chong couldn't say that.

Otherwise, he was afraid that Li Er would become angry and punish him.

Li Er probably wouldn't kill him.

But this bullying, Li Er will never spoil him.

What he said before that Li Chengqian was not suitable to be His Majesty of the Tang Dynasty was based on the fact that Li Chengqian was developed and interpreted completely according to the history books without anyone intervening.

Today's Li Chengqian, Li Chong can only say: "Now, half of it is suitable."

Li Er became interested.

"What about the other half?"

Li Chong would say, the other half is me.

Only when he fits with Li Chengqian is the most perfect.

But if he said that, Li Er would feel that you won't develop into a powerful minister in the future, right?

Before I die, I will hold you back first.

Although, in fact, Li Chong is not afraid at all, after all, when Li Er is about to die, he is probably in his 50s and 20s, and he has earned another [-] years, so he still has nothing to be satisfied with.

He said: "The other half... the prince's heart is not stable enough."

Li Er felt noncommittal.

"In the future, you will need to teach him more."

"Since he called me teacher, of course I will teach him seriously and responsibly. I have a way to make Datang get better soon."

Li Er looked at him.

"It's too good to be true."

"It can only be said that if Datang is to recover quickly, it must develop technology. After all... as the saying goes, technology changes life." Li Chong said.

"Then why didn't you say it earlier." Li Er said quickly.

"I didn't say it before, that's because I'm not ready yet. Besides, you can't imagine that you will get better soon. As I said, the good is limited. But at least, it can be regarded as a kind of progress. I It is proposed to set up a new Academy of Sciences outside the three provinces, and the dean, that is, me, will be treated as a third-rank official."

Li Chong didn't need to continue talking, Li Er knew what Li Chong wanted to do.

He went for the treatment of these three ranks.

"Are you short of money?"

"There is no shortage of anyone."

"But you are directly asking for a third-grade one. If other people find out, they will definitely be dissatisfied."

"Just press it down. Besides, I'm the prince's teacher, and I haven't even received a salary yet."

"Then you haven't done what a bachelor should do."

"This is what I said, I serve the advisor from time to time, you can't treat this as if it never happened."

"What is the role of your Academy of Sciences?" Li Er asked again.

"Develop technology."

"What is technology?"

"It's like this. Before the Three Emperors and Five Emperors, you could only use wood and stone. During the Three Emperors and Five Emperors, you could start to use bronze. After the Spring and Autumn and Warring States period, you could use iron. This is technology."

"That is to say, there will be something better than iron in the future?"

"That's not it."

Seeing Li Er staring at him, Li Chong said: "So, the good is limited. But if it is not in vain, it will definitely help. If it weren't for the fact that officials in the Tang Dynasty couldn't do business, I would have gone into business a long time ago. It's still useful. I am here to ask you for an official. By the way, I can teach the people in Chang’an how to make my tofu. The people can’t afford this mutton, but tofu is also good. The value of this tofu is comparable to mutton. The key point is that it is also cheap. "

Li Er also felt that this food was delicious, especially the stewed fish soup, which was extremely delicious.

"That's it!"

"You mean my dean, or tofu."

Li Er didn't bother to answer him.

I walked forward alone.

Li Chong did not follow.

Because there is a saying, he doesn't know when to say it or not.

As a time traveler, the last thing he should do is to show how capable he is in front of Li Er, so the situation like today is actually the worst thing.

However, Li Chong still imagined that Li Er was at least a good man, and he never killed heroes.

Unlike Lao Zhu, if it was Lao Zhu, Li Chong would not dare to reveal himself.

can only say……

It's still your own problem.

After all, I am too greedy for money.

However, if you can't live a better life in two lifetimes, what's the point?

Can't I still enjoy it?

Seeing that he didn't follow, Li Er also turned his head to look at him.

Li Chong said quickly: "I promised to enjoy the autumn scenery with the prince. If there is nothing else, then I will leave first."

"..."

outside.

Li Chengqian kicked the stones alone.

It seems that today is not enough.

Until he saw the teacher's shoes.

There is also the incense from the teacher.

"Go! Lead the way!"

"Teacher, don't you have something to discuss with Father?"

"I have something to do, not too much, just a few sentences."

By the way, Li Chong also wanted to see what the prince's life was like in the primitive ecology.

and so……

Li Chong also visited Li Chengqian's residence in the East Palace by the way.

In the future, maybe I can write a thesis and pass it down through the ages.

For example, how long and wide is it, how is it arranged inside, how many steps, what are there, in fact, it is not very big.

(End of this chapter)