Princess, he is rich enough to rival the country

"Princess, what do you think of this?"

"Well, yes, it's the effect I want."

As soon as Qin Lu walked to the gate of the small courtyard, he heard the conversation coming from the small courtyard.

Even though he hasn't seen Gu Yanshu yet, from Gu Yanshu's slightly appreciative tone, Qin Lu can guess that things should have progressed.

Looking up, Qin Lu saw the craftsman standing in front of Gu Yanshu holding a piece of glass at a glance, and Gu Yanshu who was talking to the craftsman with his back turned to him.

Because of Gu Yanshu's positional relationship at this time, and Qin Lu's own pace is relatively light, at this time Gu Yanshu is completely unaware of Qin Lu's arrival, and is still explaining something to the craftsman:

"In a moment you will..."

"The servant sees His Royal Highness King Li..."

Before Gu Yanshu finished speaking, the craftsman raised his eyes and saw Qin Lu's voice.

Before Qin Lu could raise his hand to stop him, he had already bent down to say hello to Qin Lu.

"came back?"

Gu Yanshu turned his head subconsciously, and sure enough, he saw Qin Lu standing not far behind him. He raised his eyes to look at the time, and was a little surprised:

"My lord seems to be free today?"

These days, Qin Lu mostly waited until nightfall before returning home.

However, looking at the current sun, it is not long before Shenshi.

Qin Lu nodded slightly, affirming Gu Yanshu's guess:

"The affairs in the army in the past two days have almost been dealt with. Today is just to wrap things up. If there are no accidents in the next time, this king should be able to return to the residence earlier."

"It's good for the prince to go back to the mansion earlier, it's getting colder and colder, it's not a problem to run outside all the time."

Compared with Gu Yanshu's previous life, Tianqi's winter is actually not particularly cold, even the snowy days come very late.

It wasn't until two days ago that Gu Yanshu saw the first snow in Tianqi winter.

But relatively speaking, Tianqi has much fewer measures to keep warm than Gu Yanshu did in his previous life.

Comparing the two, Tianqi's winter is relatively more difficult.

As soon as he thought of this, there was a gust of cold wind, which made Gu Yanshu shiver uncontrollably.

Qin Lu stretched out his hand, took off the cloak on his body, and put it on Gu Yanshu, while not forgetting to reprimand in a low voice:

"Why did the princess come outside the house today? You don't even know how to add a coat?"

Although Qin Lu is not a muscular man, Gu Yanshu can barely be compared with him.

The sound is "petite".

Qin Lu's cloak wrapped it tightly around Gu Yanshu from beginning to end.

Feeling Qin Lu's body temperature on the cloak, Gu Yanshu squinted his eyes comfortably before speaking:

"Aren't I working on a silver mirror for the past two days? The brightness inside the house is not enough. Come outside to see the effect, and then go back after watching."

Following Gu Yanshu's words, Qin Lu's eyes also fell on the glass in the craftsman's hand.

Only then did Qin Lu realize that what the craftsman was holding was not glass, but a mirror:

"Is this the silver mirror that the princess has been making these days?"

"That's right, my lord, take a look first?"

Gu Yanshu nodded slightly, bent down to take the mirror from the hand of the craftsman.

However, before his fingertips touched the mirror, Qin Lu, who sensed Gu Yanshu's thoughts, had already reached out and picked up the mirror.

Looking at the portrait reflected in the mirror, this was the first time Qin Lu saw his own face clearly.

Even if Qin Lu had already learned from Gu Yanshu two days ago, the picture illuminated by the silver mirror would be much clearer than the bronze mirror.

But he didn't expect to be able to be so clear to the point of detail.

Through this mirror, Qin Lu could even see clearly the hair on his head and the lines on the fabric of his clothes.

Even the flash of surprise in his eyes was clearly captured.

Gu Yanshu walked to Qin Lu's side at some point, and also appeared in the mirror:

"How does your lord feel?"

"It is indeed as clear as what the princess said."

Seeing Gu Yanshu appearing in the mirror with himself, the two of them being intimate, Qin Lu suddenly didn't want to put down the mirror:

"No wonder it takes so much trouble for the princess."

"I'm not the one who bothers you." Gu Yanshu shook his head with a smile, "The artisans in the yard have spent more time than I have."

These days Gu Yanshu has indeed tinkered with a lot of gadgets, but if there is any thing that Gu Yanshu made by himself, there really isn't one.

After all, Gu Yanshu only knows the rough production methods of many things, but has never made them by hand.

But it was obviously not a problem for Gu Yanshu.

Just like what Gu Yanshu and Qin Lu said when they took out movable type printing, there is a specialization in art.

It's true that Tianqi doesn't have such things as soap, but it does have saponin soap. I invited the craftsman who made the soap to give me some pointers. Isn't this soap soap a trivial matter?

It just so happened that the main courtyard of Prince Li's Mansion was being renovated recently, and the most indispensable thing in the mansion was all kinds of craftsmen.

It is also because of this that Gu Yanshu was able to toss so many things in just a few days.

"The artisans are indeed hardworking, but without the ingenuity of the princess, they would not be able to make these things."

Qin Lu did not deny Gu Yanshu's words, but then changed the subject and praised Gu Yanshu again.

Who doesn't like to hear nice words?

Naturally, Gu Yanshu also liked to listen, and when he glanced at Qin Lu, a very nice smile appeared on his face.

The craftsmen standing by the side felt Qin Lu from trembling at the beginning to speechless now:

It was agreed that His Royal Highness Li Wang was cruel and ruthless, so he hanged Li Wang up and beat him when he had nothing to do?

Who is this person who is afraid of Princess Li and adds clothes to Princess Li in the cold?

Who is the person who is afraid that Princess Li will cut off her hand, even the mirror is not at ease?

Just when the craftsman was complaining wildly in his heart, Gu Yanshu handed the mirror taken away by Qin Lu to him again.

At the same time, there is Gu Yanshu's whispered order:

"You take this mirror down first and do a wear-resistance test. If there is no problem, then tell Lao Xin, and make a few more silver mirrors according to this method."

"Yes." The craftsman quickly reached out, took the mirror from Gu Yanshu's hand, and leaned over to leave.

"Old Xin?" Qin Lu raised his eyebrows as he read the familiar name, "Xin Quanyou?"

If he remembered correctly, this Xin Quanyou should be from Prince Li's residence, right?

"This silver mirror doesn't need those little things that can't be sold at a high price a few days ago. Naturally, it needs to be made by someone you can trust."

Gu Yanshu knew the meaning of Qin Lu's words as soon as he heard it, so he glanced at him directly:

"What? Is there anyone in Prince Li's mansion that I can't use?"

"Of course not." Qin Lu smiled slightly, raised his hand, and stopped Gu Yanshu from walking towards the house, "If the princess is willing, this king is also willing to serve the princess."

"It's good that the prince knows." Gu Yanshu raised his chin and replied arrogantly.

The charcoal fire in the house has not been extinguished, and the moment he stepped into the door, Gu Yanshu felt a lot warmer on his body.

Only the hands that had just been blown by the cold wind for a while were still a little stiff.

Seeing Gu Yanshu rubbing his hands, Qin Lu stepped forward and wrapped Gu Yanshu's hands in his palms, slightly

Mobilize internal force:

"In the future, if you feel that the light in the house is not enough, you can just look at the window, why bother to go to the courtyard?"

While speaking, he did not forget to signal Xingren who was standing not far away to fetch a basin of hot water to wash Gu Yanshu's hands.

Knowing that he was wrong, Gu Yanshu immediately lost the arrogance just now, and said loudly:

"Aren't you happy to see that the silver mirror has been made?"

The gadgets in the past few days have been going smoothly, Gu Yanshu never thought that the silver mirror would give him such a big problem.

In the beginning, Gu Yanshu originally wanted to use the silver mirror reaction to make this silver mirror, but the silver nitrate needed for the silver mirror reaction was hard to find.

Helpless, Gu Yanshu can only use the second plan, which is mercury.

But mercury is not easy to control and is toxic. Gu Yanshu told the craftsmen to pay attention to protection and avoid direct skin contact before letting them experiment.

The results of the experiment in the past two days are not good, either the imaging effect is not ideal, or the mercury coating will fall off when touched.

It was not until today that a finished product that met Gu Yanshu's requirements was finally produced.

Gu Yanshu was so happy that he forgot to wear a cloak and rushed directly to the yard to observe the finished product.

Who knew that just this once, he was caught by Qin Lu who came back early.

Seeing Gu Yanshu's guilty appearance, Qin Lu couldn't bear to reprimand him more, so he gave a warning that was not a warning:

"If there is another time, don't blame me for letting Xingren follow you every step of the way."

Knowing that Qin Lu would not argue with him anymore, Gu Yanshu nodded hastily:

"Understood, there will be no next time!"

In a blink of an eye, he saw the ginger soup handed over by Qin Lu. While muttering in a low voice that Qin Lu was making a big fuss, Gu Yanshu still took the ginger soup obediently, and drank it with a bitter face.

When Gu Yanshu put down the bowl, he saw that Qin Lu's expression improved a lot.

Fearing that Qin Lu would be in trouble again, he just went to the yard without a coat, so he quickly changed the subject:

"Let's not talk about this first, the prince will take a look at this first!"

With that said, Gu Yanshu turned around and took out a small wooden box from the house.

Seeing that Gu Yanshu was changing the subject, Qin Lu didn't expose it, but followed Gu Yanshu's movements and set his eyes on the wooden box.

Then, Qin Lu saw Gu Yanshu open the wooden box and took out three things from it.

Among them is an object that looks like a bamboo tube, Qin Lu can't see it

It was true, but Qin Lu could tell that the other two pieces were made of glass made by Taoran Kiln Factory.

"What are these?"

He reached out and took one of the objects with a handle that looked like a small fan in his hand.

Gu Yanshu glanced lightly, and then gave the answer:

"The one in the prince's hand is called a magnifying glass."

"Magnifying glass?" Qin Lu turned the magnifying glass in his hand.

"Is such that."

Gu Yanshu stretched out his hand and took the magnifying glass back from Qin Lu's hand, then spread his palms and placed them under the magnifying glass:

"My lord, if you look at it like this, does my palm print have been magnified a lot?"

Only after seeing Gu Yanshu's demonstration did Qin Lu know how to use the magnifying glass correctly.

Taking the magnifying glass from Gu Yanshu's hand, he put it on his palm and looked at it, and found that it was indeed the case.

Because of Gu Yanshu, there are already a lot of glass products in Prince Li's mansion, but none of them can achieve the effect of magnifying the objects.

Although he didn't know the reason, it didn't prevent Qin Lu from being amazed by it.

However, Qin Lu's military strength is high, his hearing and eyes are clear, and his eyesight is so good that he can even walk through Yang with a hundred steps.

The magnifying glass is not very useful to him, so after marveling, Qin Lu inevitably moved his eyes to the other two things that Gu Yanshu took out.

Noticing Qin Lu's gaze, Gu Yanshu picked up one of them first, and explained to Qin Lu:

"These are glasses. Didn't the lord just tell me a few days ago that my father's vision is not as good as before? And not only my father, but also many older courtiers have this kind of trouble. "

"Yes."

Qin Lu nodded and answered, and seemed to understand the function of the glasses.

Gu Yanshu's subsequent words immediately confirmed Qin Lu's conjecture:

"The purpose of these glasses is to allow people with impaired vision to see things as clearly as before after wearing them."

Hearing what Gu Yanshu said, Qin Lu subconsciously wanted to try the glasses.

However, before putting it on, Gu Yanshu reached out and stopped him:

"Hey, wait a minute, my lord! My lord's eyesight is fine, but if I wear this, I won't be able to see clearly, and I may even feel dizzy. If my lord is really curious, I can ask the accountant in the mansion who has vision problems to try it out and listen to the accountant's advice. Just feel it."

There are two elderly accountants in the palace who also have the problem of presbyopia, Gu Yan

When I made this pair of glasses, I asked them to help experience it.

Hearing Gu Yanshu's words, Qin Lu knew that the glasses were not meant for him, so he reached out and put them down.

When putting down the glasses, Qin Lu's fingers inevitably touched the remaining bamboo tube.

Now that he had touched it, Qin Lu picked it up and asked in a low voice:

"What is this?"

"This is a gift I prepared for the prince."

Gu Yanshu also knew that whether it was a magnifying glass or glasses, Qin Lu would not be too interested, so the last thing was the highlight.

Therefore, Gu Yanshu first sold a small trick to arouse Qin Lu's interest, and then gave the answer:

"This is called a telescope."