I am the cook, but I am Li Er's son-in-law

Hearing what this person said, the others nodded.

Also.

Although Xue Rengui's performance is terrifying now, but...there are rumors that the reason why Xue Rengui can do this kind of thing is because of the superiority of the terrain.

Although there are not many people in Datang who can do this, people like Your Majesty and Li Jing can do it.

In other words... Xue Rengui has reached a very good level now, but he is still a little short of that unattainable level of immortality.

But Li Shimin felt even more itchy.

What is the biggest advantage of Xue Rengui and Yin Xuan?The biggest advantage is not the ability they have now, but their age.

too young.

Like Li Shimin, he was very powerful when he was young, and then... now he is the emperor.It's hard to imagine what they will become in the future.

No matter which of these two people is pulled out, they are the pillars that can support a dynasty.

When I think about my abdication and death, no matter which son becomes the emperor, he will need such talents-this is put in other dynasties, because he is afraid that his son will not be able to suppress those people, and he is worried that these people will become powerful officials.

嗏

It's different to let yourself go.

Li Shimin is basically not worried that Yin Xuan will become a powerful minister. He is distressed now, how to use a suitable reason to cure Yin Xuan's "illness", and then drag him to the court.

Thinking of this, Li Shimin sighed again.

In Chang'an City, everyone was discussing Xue Rengui's future achievements in this way. During this time, Yin Xuan discovered a huge problem.

I seem to have forgotten all the time, get out the clock?
A clock, or a concrete and detailed understanding of time, is a very important thing.Any unit of measurement that measures an object is so important.

Datang does not lack the understanding of time, but it is not refined enough, and... the promotion is not very sufficient. Only people like Yin Xuan can have a clearer understanding of time.

The devices used to measure time today are generally sundials. This is actually a very accurate device. If the eccentricity of the earth's orbit and the inclination of the earth's rotation axis are not considered...

So although the sundial is accurate, its usefulness is still too limited.

The second is to engrave the leak. Use a small pot, perforate the bottom of the pot, and stand a ruler in the pot. As the water flows down, you can tell the time.This is also a relatively precise method.

But the problem is that this thing is not convenient.And...according to the size of the hole at the bottom of the pot, the flow rate will also be different, so there will be deviations in time perception.

As for the clock, the technical content is quite high.

But for the current Tang Dynasty, it is not difficult. In fact... It may be unbelievable to say it. The escapement device has been researched in the Tang Dynasty, in this era.

Although... what is used now is only temporary, and it will be completely completed by Su Song in the Song Dynasty.

But it's easy to have.

In the mechanical clock, the most important thing is the escapement. With the escapement, there is a mechanical clock.

Yin Xuan asked Li Lizhi to inquire about it, and got this thing out from the Taishi Bureau, and then a few girls began to study this thing.

With the foundation of the escapement, they made the result in less than a month.

A mechanical clock almost as tall as Yin Lulu was made.

The scale used is not the "one to 24" that Yin Xuan is familiar with, but the name of Zichou Yinmao is still used, but there are only these differences.

It is still divided into 24 hours. One hour is divided into Yin and Yang. Each hour is divided into 60 minutes, and each minute is divided into [-] seconds.

"This is what you said, a more sophisticated machine used to measure time?" Li Shimin circled the mechanical clock with amazement in his eyes.

Ever since the affair of Li Chengqian came to an end, Li Shimin loved to go to Tongfu Restaurant very much, almost every three or four days.

Although there was some resentment in the court.

But Li Shimin did not delay the government affairs, and it was equivalent to the death of a son, and they could understand that they needed to vent their bad mood.

Empress Changsun is completely unable to live in the imperial city now, and nothing is more sad than Li Chengqian's matter.For this reason, he also suffered a serious illness. Fortunately, during this period of time, he recovered a little bit in the Tongfu restaurant, and Li Shimin invited Sun Simiao.

Otherwise... it might be very difficult for this queen to survive this disaster.

Li Shimin likes this clock very much.

Li Lizhi and the others study things, and there is a very distinctive feature, that is gorgeous.

The appearance of this mechanical clock follows the same style as before.

To carve dragons and phoenixes, all the best craftsmen are hired. It took less than [-] guan to study the mechanical clock, but it took [-] guan to hire a master to carve such a sculpture and buy high-quality wood. .

"Yes." Yin Xuan nodded.

Li Shimin looked at it for a while, and finally understood this thing with a flash of light in his head: "So... the thinnest needle, if you turn it around, the second thickest needle will jump?"

"Then the second thickest needle, after one turn, will the thickest needle jump by one tick, that is, one hour?"

Yin Xuan was a little surprised, and clapped his hands: "You are so smart, you don't need to explain, you understand it!"

Li Shimin gasped, feeling a little toothache.This yin and yang is weird...

"But I made a mistake. The thickest one is called the hour hand, and it takes half an hour to jump." Yin Xuan put away his exaggerated tone and pointed out the mistakes in Li Shimin's words.

Half an hour?
Li Shimin nodded suddenly, looked at the mechanical clock several times, and suddenly asked, "This thing...is there a way to make it smaller?"

After just a few glances, Li Shimin realized how important this thing was.

What Li Shimin thought of was of course not the importance of scientific research, but the importance of war.

What does this thing mean?
It means that even two troops thousands of miles apart can launch attacks at the same time and at the same time without any communication.

It is already an important configuration in the strategic sense.

Li Shimin doesn't expect it to be much smaller, but at least... it can be shrunk to the point that a horse can easily carry it.

"Of course." Yin Xuan smiled and nodded, "Actually, your two daughters are already doing it."

Can be small!

Li Shimin's eyes lit up: "How small can it be?"

Yin Xuan raised his hand and tapped his wrist lightly: "It can be small enough to be worn on the wrist."

Li Shimin stared.

good guy...

Having been with Yin Xuan for so long, my guess has never been right.