Datang started from being a salted fish

Chapter 498: Smart Ancient People
Although the seaside can definitely be exposed to the sun, Chang'an City is too far away from the seaside, so let's first think about getting salt from the lake. . .

Of course, someone must have been sent to the seaside, but it's just that there will be no news coming back in a while.

In addition to finding a place to dry the salt, the development of this magnifying glass was also put on the agenda. After half a month of various attempts, a group of workers from the Ministry of Industry, headed by Duan Lun, finally made a lot of magnifying glasses.

After all, they can only polish the mirror surface by hand now, and they spend most of their time here, and Wang Yin was too busy making salted fish and forgot to make them a grinding machine or something like that.

Ministry of Industry
"Be careful." Duan Lun stood in the yard directing a group of younger brothers to test the newly-made magnifying glass.

Considering that it will be used for drying salt, the size of the magnifying glass must not be too small. It is basically bigger than a person, and it takes four or five people to lift it.

After several giant magnifying glasses were fixed on the shelf and adjusted their angles, a group of people gathered together to observe the dry logs on the ground.

After a while, the surface of the wood began to turn black and smoke, and as the smoke increased, the whole wood began to burn!

"It's amazing!" A group of people couldn't help but be dumbfounded when they saw this.

Although they did use a magnifying glass to light a fire before, it was usually small flammable things like paper. This is the first time that they have directly ignited wood!
"As expected of the technology brought out by the immortals, it is amazing!" Everyone looked at the burning firewood pile and sighed again.

And this kind of feeling has basically never stopped in the past half a month.

Among other things, just using a magnifying glass to start a fire would have been unthinkable before, okay? !

How can this be a fire?This is simply burning money!
But now?
Leaving aside, in Chang'an City alone, even ordinary people can afford to buy paper!
Isn't this all brought to Datang by the immortal? !
Now even if Wang Yin doesn't know how to get things from the air, he is still a god in the eyes of this group of people!

After all, this group of people are the top technicians in Datang, so they naturally admire the more powerful people in their field.

In particular, Wang Yin also selflessly shared these technologies with them, which must be respectful.

"Finally, I can give a mission to His Majesty." Seeing the current effect, Duan Lun knew that the mission was completed.

No matter which line of work it is, there are always a few people who are different, such as those who like to think about things when they are free.

It just so happens that the Ministry of Industry has one like this. . .

A man in his forties was staring blankly at a magnifying glass in his hand.

The fact that this thing can magnify objects must be known by the people in the Ministry of Industry who have been tinkering with it for so long, but most of them didn't think much about it.

After all, the most important task for them at the time was to complete the tasks assigned by Li Shimin first.

But this uncle is different, because he found that using those small magnifying glasses to look at things before can not only zoom in, but also make him see more clearly!
Um. . .In fact, it is because he has presbyopia. . .

This discovery directly shocked him, and then he began to think about it: the clarity of seeing things with different convex magnifying glasses is different, but generally speaking, it is still not as clear as when he was young.If I find a suitable convex surface, will I be able to see things as clearly as when I was young? !
Now that you've thought of it, let's start doing it!
And Li Shimin said it before when he gave the task, but it's enough to make it work, don't be afraid of wasting it!
Although this thing is extremely expensive to take out, but the cost is there, so Li Shimin doesn't feel bad at all!
So after his unremitting efforts, he finally found a magnifying lens suitable for his eyes.

After discovering that the clarity of seeing things is not much different from when he was young, the man immediately waved excitedly: Great discovery!Great discovery!You must know that there are quite a few people with eye problems like me, this time I can be regarded as another way for His Majesty to make a fortune!At that time, the reward will be less? !
Besides, this thing is not just a reward for some money, it is a great honor!

After the excitement, the man began to study the fixing problem of the magnifying lens: After all, you can't hold it in your hand to see things all the time, so you can't do anything.

"We need to get a shelf to fix the two magnifying glasses..." The man drew on the paper with a pen while pondering: "Then we have to find a way to fix the shelf on the head..."

So after a lot of tossing, he finally drew a helmet-like thing. . .

"It doesn't seem very good-looking..." The man also looked depressed when he saw what he had drawn: "Forget it, at least it's freed your hands..."

General House

"Oh shit, your people are powerful enough!" Wang Yin looked at the helmet-like Wang Yin in his hand with surprise on his face: "Why does this look like a million-dollar hat..."

It's no wonder that Wang Yinhui was shocked, the helmet-like thing in his hand was so similar to Teemo's hat, Wang Yin even wondered if the person who made this thing had also traveled through time. . .

Wang Yin was amazed when he saw what his own people had created, and Li Shimin was immediately stunned: It seems that my people are still very powerful!A new thing was created directly from Wang Yin's technology!reward!I will definitely reward you when I look back!
"Wang Yin, he said that after wearing this thing, he could see things more clearly. What's going on?" Li Shimin immediately asked the doubts in his heart.

It's all about the rant, the question that should be asked still needs to be asked.

"This phenomenon will appear when a person reaches a certain age. You can call it presbyopia." Wang Yin replied without raising his head: "In simple terms, it means that people are getting old."

"I see..." Li Shimin nodded upon hearing this.

"As for the specific reason, I can't tell you a single sentence, so you don't have to think about it." Wang Yin shook his head and put the helmet on the table: "Anyway, you just need to know that this kind of lens can make people see things better if the curvature is right. Just be more clear."

To be honest, Wang Yin was really surprised. He didn't expect that he took out a magnifying glass and they even fiddled with reading glasses!

Wang Yin never doubted that if they were allowed to toss about, even the myopia glasses would be adjusted.

(End of this chapter)