Ying Zheng definitely didn't want to see everything in the future, so he nodded and agreed and ordered someone to summon Ying Feiyu.

After Lian'er briefly described the situation, she stared at him with Ying Zheng with anticipation!

"It's not cured!"

However, Ying Feiyu didn't even think about it and refused.

"ah?"

Lian'er frowned and was disappointed.

"Well! I guessed it too! This kid is not a god, how could he make me rejuvenate?"

This time, Ying Zheng was very open-minded and shook his head and smiled bitterly.

"Feiyu, isn't even you able to do anything?"

Lian'er still has a glimmer of hope.

"There is a solution!"

Ying Feiyu said firmly.

"What? Didn't you just say that it's not cured? Why did you say there is a way?"

The two inconsistent words really made Ying Zheng confused.

Of course, he still hoped that what this kid said was true and that his eyes could be restored to the past.

But I was worried that this kid was urging him, so I said these different things!

"My son said it was impossible to cure it, but he didn't say it couldn't be adjusted!"

Ying Feiyu still pretended to be innocent.

"This... what's the difference between the two?"

“The difference is so big…!”

Ying Feiyu smiled leisurely and said, "The situation of the father is called presbyopia, which is equivalent to a decline in human body functions. It is indeed impossible to treat! But it can be adjusted through other methods!"

“How to adjust?”

Hearing this, Ying Zheng seemed to see hope, his eyes shining with the light of expectation.

"Feiyu, don't keep it a secret, just talk about it quickly!"

Lian'er was also very anxious and couldn't bear to watch Ying Zheng worry about his weakening of his eyesight.

"This... Even if the son minister says it, the father may not be able to understand it!"

Ying Feiyu was about to speak, but then he thought that there were many professional terms involved. Even if he spoke it, the old man would be confused.

At that time, I will ask what professional terms mean.

In this way, just explaining these will waste a lot of time.

Let’s explain it in another way, “So let’s say so! The father should know that the telescope! It can pull things from far away through the lens, while presbyopia needs to put things from near to far away!”

Although presbyopia is different from hyperopia, it will be easier to understand the bad father in this way.

"I see……!"

As expected, Ying Zheng nodded clearly after hearing this.

Then, as if he thought of something, he began to frown slightly, "When I go out again, wouldn't I have to bring a telescope at any time?"

Although the problem can be properly solved, he finds it too inconvenient no matter how he thinks it!

"There is no need, I have a better solution!"

Ying Feiyu smiled mysteriously.

“What method?”

"The father doesn't have to worry about it anymore. Just take the opportunity to bring the things!"

"Okay!"

With Ying Zheng’s understanding of Ying Feiyu, if this kid doesn’t want to say it, even if he asks with a verbal lip service, this kid will never tell him.

It would be better to turn around and bring the things over, and he will naturally know!

"Flying Yu, how long will it take?"

Lian'er spoke softly and asked for Ying Zheng.

“It’s enough for one day!”

Ying Feiyu said with a smile.

"One day? Just one day?"

Ying Zheng's eyes were wide open, quite surprised.

"That's right! After the court is over tomorrow, my son will come here with his things!"

Ying Feiyu nodded firmly.

"You little brat, you can solve something in just one day. Didn't you tell me earlier? I've been blurred for so long, and I thought I'd be blind in a while!"

Speaking of this, Ying Zheng blamed him instead.

"Father, how can I blame Erchen for this? You didn't say anything about it before, and Erchen doesn't know anything!"

Ying Feiyu was really defeated by this old guy.

It was normal for a while, and the unreasonable spirit came up again!

He is not the worm in this old man's belly, how could he know that he has presbyopia?

"You little brat, are you not sure what age I am? How can you not have any eyes?"

When Ying Zheng learned that there was a proper solution, he felt much more at ease, and he no longer had the melancholy he had before, and he complained with confidence.

"Okay, Brother Zheng, Fei Yu is right. If you don't say it, he doesn't know what the problem is in your body! Isn't this helping solve it?"

Lian'er stood on her son's side and spoke in comfort.

"Hmph! Then don't waste your time, kid, I'm still waiting to read tomorrow's newspaper!"

Ying Zheng snorted coldly and began to pick up the tea cups and taste the tea leisurely.

Judging from that situation, I had no worries before!

"If there is nothing else, I will take my leave first!"

Ying Feiyu bowed his hand and turned away from Yuxiu Palace.

On the way to the Imperial Study Room, rolled his eyes while muttering angrily, "This old guy is so arrogant to ask for things! If I had known this, I should have delayed the time!"

But no matter how much I mumbled, I had already agreed to take things that could solve presbyopia in one day, so I have to arrange someone to do it now!

In later generations, presbyopia is also an extremely common phenomenon, and most elderly people will experience this situation!

It can be treated through surgery, but most people will not choose to do so.

After all, surgery has certain dangers. There is no need to take this risk if you can solve it with a pair of glasses!

Besides, presbyopia is just a little blurry when looking at the fonts near, and is almost unaffected when looking at things far away!

In the Qin Dynasty, there are definitely many people like Ying Zheng.

No one mentioned it before, so Ying Feiyu didn't pay attention to this aspect.

Now that the scumbag has mentioned it, we should study the glasses.

In addition to presbyopia, Daqin should have many myopia!

In the past, the oil lamps were used, and the light was not good. In order to survive, poor families could only study hard, day and night.

This leads to myopia!

By the time glasses were invented, this problem was solved!

To make glasses, you must first have a grinder.

It is definitely not possible to draw the drawings and let Huang Yuan lead people to research and manufacture them.

So he planned to exchange one directly from the system.

Redeem some finished lenses and send them to the glass factory for them to make them according to the method!

First, fool Ying Zheng, then let the glass factory make a large number of lenses, grind them according to the method to solve the needs of other people in the Qin Dynasty!

Thinking about all this, Ying Feiyu returned to the imperial study room and found a lens edge grinder in the system.

This thing is not cheap, it actually costs him 30,000 yuan in reputation!

The reputation value he had finally accumulated was reduced by 30,000 yuan after his thoughts moved slightly!

The redeemed items appeared in the system warehouse, and then were taken out directly and appeared in the imperial study room!
Chapter completed!