"Fourthly, do you know about sinan, Your Highness?"
In the front hall of the Li Mansion.
Li Zexuan looked at Li Xiaogong and asked.
"Of course. There are several of them in the Imperial Astronomer. Why?"
Li Xiaogong replied curiously.
According to the Ancient Mine Records, sinan first appeared in the Hebei Magnetic Mountain area during the Warring States Period. At first, it was used for geomancy, but there were no archaeological objects. It took a long time for sinan to become a compass. At least, there was no compass in the early Tang Dynasty.
Qiu Yanhan, a geomancy expert in Shanxi during the Kaiyuan Period of the Tang Dynasty, was praised by later generations as the founder of the Three Needles of Geomancy (Straight Needle, Sewing Needle, and Medium Needle). He might be the first inventor of the magnetic needle.
In the early Northern Song Dynasty, another guide tool was created in our country — the Guide Fish. It was made of a thin piece of steel and was shaped like a fish. It was two inches long and five inches wide. The belly of the fish was a little concave. Like a boat, it could float on the water. The fish made of steel was not magnetic, so it could not be used as a guide. If it was used as a guide, it must be turned into a magnet by artificial magnetic transmission.
The General Essentials of Martial Arts, compiled by Zeng Gongliang in the Northern Song Dynasty, introduced the preparation method of the Guide Fish in detail. As for the method of making a floating magnetic needle, it was first seen in Shen Kuo's Dream Creek Talk in the Northern Song Dynasty. The earliest application of the compass in navigation was in the Ming Dynasty when Zheng He went to the Western Ocean.
In this era, even if the compass was invented, no one would think of using it for navigation.
Yes, the gift that Li Zexuan wanted to give to the team of tens of thousands of people was a compass. This thing was a powerful tool for navigation. In the Song Dynasty and Yuan Dynasty, the compass invented by our country was spread to many countries in Europe and Asia, making it possible for modern Europe to explore the ocean. Of course, the European countries established colonies by sailing the ocean and rose completely, but we …
"Your Highness, the handle of the sinan will point to the south no matter how it is rotated. With it, we will be able to distinguish the direction in the vast sea! In this way, we won't get lost. "
Li Xiaogong's eyes lit up. Although he had never been to the sea, he had fought many water battles. He said excitedly, "Haha, you have a lot of ideas. Only you can think of using the sinan for navigation! But … "
Speaking of this, he frowned and said, "But Sinan is too big. I'm afraid it will be inconvenient to put it on the ship."
Li Zexuan laughed and said, "Wangye need not worry about this problem. Xiao Bei knows of an object that can also point us in the right direction. Moreover, it is incomparably light and easy to carry. If Your Highness needs it, I can have the workshop make a few today and send them to Your Highness. Your Highness will know when you see them. "
"Is there really such a divine object? Then you have to make it as soon as possible. There are only a few days left before the army departs! "
At this moment, Li Xiaogong was really glad that he had come today. The harvest was too great!
Li Zexuan was about to nod when he suddenly remembered something and said, "This one is very willing to help Your Highness. However, this one is still under house arrest. I can't go out, nor can I go to the workshop personally. As a result, I'm afraid the progress will be much slower."
Although the house arrest order allowed him to have many days off, it was indeed inconvenient for him to go out if he had something to do. For example, when he came up with the idea yesterday, he had to trouble himself to write down the changes of the Datang Daily. How could it be more convenient to say it in person?
Li Xiaogong said indifferently, "This is not a big deal. I'll go to the palace later and ask His Majesty to suspend your house arrest order. The military situation is urgent. I'm sure His Majesty will make an exception for such a small matter."
Li Zexuan said happily, "Thank you, Your Highness!"
"It's okay. Xiaoxuan, do you have anything else to say about what needs to be paid attention to when going to sea?"
"There is one more thing."
Li Zexuan said in a low voice, "Your Highness, I suggest that Your Highness choose as many elite soldiers as possible for the 20,000 naval troops this time. They can win both the naval battle and the land battle. They should also be well prepared with weapons."
Li Xiaogong's eyes flashed and he said in a cold voice, "Xiaoxuan, you mean … we will not only encounter naval battles, but also have to fight with others on land?"
Li Zexuan nodded and said,
"Yes, it's very likely. We may encounter pirates on the water. As for the land … Your Highness, the goods your fleet is carrying this time are all very valuable. Those gorgeous silks and exquisite porcelain are more precious than gold to the people of Nanyang. It's hard to guarantee that they won't have evil intentions.
If you are not careful, the 20,000 troops led by Your Highness will be attacked by those small countries. The entire fleet will be attacked from all sides and the whole fleet will be besieged from all sides. The original intention of this fleet is indeed for trade, but we must be vigilant. If others try to break the rules by force first, I think Your Highness won't have to be merciful, right? "
Li Xiaogong frowned and said coldly, "If those small foreign countries dare to offend the tiger of the Celestial Empire, I will definitely draw my sword and drink their blood to show the might of the Tang Empire!"
Li Zexuan exclaimed in admiration, "Your Highness is truly bold!"
He looked at the time and said, "It's already late.
"It's getting late. Why don't Your Highness and Uncle Qin have a meal at my house?"
Li Xiaogong chuckled and said, "I heard that you are quite accomplished in eating and drinking. It just so happens that I will stay at your house today and try your delicious food and wine, haha!"
Qin Qiong also nodded and laughed, "Haha, that's how it should be. Counting the days, Xiaoxuan, you and Yuxi are about to get married. As Yuxi's adoptive father, I haven't eaten at your house yet!"
Li Zexuan said, "Cough, cough, it's my fault for not thinking it through!"
"Haha!"
.....
On the other side.
Meng Wenhao sat on the bridge pier and read the newspaper for a while. Naturally, he read the last few paragraphs of the newspaper several times. He was really tempted by the generous rewards of writing novels. He also had the idea of writing novels in his spare time. However, he immediately rejected the idea after thinking about it for a while.
First of all, the studies in the mathematics school were very intense and the competition was very fierce. He still wanted to get first place in the monthly exam and get the opportunity to bring his family to the Zuixian restaurant for a free meal. Under normal circumstances, if his family ate and drank freely at the Zuixian restaurant, they could eat at least fifty to sixty strings of coins. If they ordered wine, it would be even more expensive. This was more cost-effective than writing novels!
On the other hand, writing novels would definitely delay his studies. His parents would definitely not allow it, and he would not allow it either.
Shaking his head, he dispelled this unrealistic idea. Meng Wenhao looked at the sun above his head and then got up to go home for lunch. At this time, he realized that he was actually near Yongda Square. In the morning, he wandered around aimlessly and unknowingly came to a place so far away from home.
Meng Wenhao sighed and walked home.
"Don't move! It's a robbery! "
When he walked to Xuan Yi Lane, Meng Wenhao suddenly heard a low man's voice coming from the alley between Xuan Yi Lane and Feng 'an Lane. He was shocked and quickly turned to the corner, carefully peeking at the situation in the alley.
He saw a big man in gray clothes with a piece of black cloth over his face. He held a cold kitchen knife in his hand and was holding it against the neck of an eleven or twelve-year-old girl. It was a scene of robbery in broad daylight.
.....
You've already exceeded your reading limit for today. If you want to read more, please log in.
Login
Select text and click 'Report' to let us know about any bad translation.
