"Fourth, I wonder if the prince knows about Si Nan?"
The front hall of Li Mansion.
Li Zexuan looked at Li Xiaogong and asked.
"Of course I know. How many of these people are there in Qintian Prison? What's wrong?"
Li Xiaogong replied strangely.
According to the "Ancient Mine Records", Sinan first appeared in the Cishan area of Hebei during the Warring States Period. It was originally used for geomantic omen, but there is no archaeological object. From Sinan to the compass, a long period of time passed in between. At least the compass did not appear in the early Tang Dynasty.
Qiu Yanhan, a Shanxi Kanyu master during the Kaiyuan period of the Tang Dynasty, was praised by later Kanyu masters as the founder of the earliest straight acupuncture method among the three Kanyu skills (front acupuncture, suture needle and middle acupuncture). This person may be the earliest inventor of magnetic needles. .
In the early years of the Northern Song Dynasty, my country created another guide tool - the guide fish. It was made of a thin piece of steel and shaped like a fish. It is two inches long and five minutes wide. The belly of the fish is slightly concave. It looks like a small boat and can float on the water. Fish made of steel sheets are not magnetic and therefore do not function as a guide. If you want it to guide, you must also use artificial magnetism to turn it into a magnet and have magnetic properties.
Zeng Gongliang and others in the Northern Song Dynasty compiled the "Wu Jing Zong Yao" based on previous materials, which introduced the preparation method of guide fish in detail. As for the production method of water-floating magnetic needles, it was first seen in "Mengxi Bi Tan" by Shen Kuo of the Northern Song Dynasty. The earliest application of the compass in navigation was during Zheng He's voyages to the West in the Ming Dynasty. Even if the compass was invented in this era, it is estimated that no one would have thought of using it for navigation.
That's right, the gift Li Zexuan wants to give to these tens of thousands of troops is a compass. This thing is a powerful navigation tool. During the Song and Yuan dynasties, the compass invented in our country spread to many countries in Europe and Asia, making modern Europe Ocean exploration has become possible. Of course, European countries have completely risen by virtue of ocean voyages and the establishment of colonies, and we...
"Your Majesty, no matter how you rotate the handle of Sinan's spoon, it can point to the south very well. Through it, we can identify the direction on the vast sea! This way we will not get lost."
Li Xiaogong's eyes lit up. Although he had never been to the sea, he had been involved in many water battles. He said excitedly: "Haha, you have so many clever ideas. Only you can think of using Si Nan for navigation." Yes! But... "
Having said this, he frowned and said, "But Si Nan is too big, and it may be inconvenient to place it on the ship."
Li Zexuan smiled and said: "Your Majesty, you don't need to worry about this problem. I know something and can point out the direction, and it is very light and easy to carry. If Your Majesty needs it, I can ask the workshop to make a few today and send them to the palace. The prince will know when the time comes."
"Is there really such a magical thing? Then you have to make it as soon as possible. There are only a few days until the army sets off!"
At this moment, Li Xiaogong was really glad that he had made this trip today. He had gained so much!
Li Zexuan was about to nod when he suddenly remembered something and said: "The boy is very willing to help the prince, but he is still in the confinement period recently. He cannot go out or go to the workshop in person. As a result, the progress will be much slower."
Although the ban allowed him to take many days off, it was indeed inconvenient if he needed to go out for something. For example, today's "Datang Daily" revision, when he came up with the idea yesterday, he had to go to the trouble of writing a letter to Ma Zhou and the others. How to change it? It's not as convenient as saying it face to face.
Li Xiaogong said nonchalantly: "This is not a big deal. I will go to the palace soon and ask your Majesty to suspend your ban. The military situation is urgent. I believe your Majesty will be accommodating to this small matter."
Li Zexuan said happily: "Thank you so much, Your Majesty!"
"It's okay, so Xiaoxuan, do you have anything else to say about what you need to pay attention to when going to sea?"
"A little more."
Li Zexuan muttered: "Your Majesty, for the 20,000 navy troops this time, I suggest that your Majesty select as many elite soldiers as possible, who can win water battles as well as land battles, and the weapons must be fully prepared."
Li Xiaogong's eyes flashed and he said coldly: "Xiaoxuan, you mean... we will not only encounter water battles, but also fight others on land?"
Li Zexuan nodded and said:
"Well, it is indeed very possible. It is possible to encounter pirates on the water. As for the land... Your lord, the goods you carried in this fleet are all valuable. Those gorgeous silks and exquisite porcelain are very valuable to Southeast Asia. To the people outside, it is as precious as gold, and there is no guarantee that they will not be malicious.
If you are not careful, the 20,000 troops led by the prince will be attacked by those small countries with all their might, and the entire fleet will be attacked from both sides and besieged on all sides. The original intention of the fleet heading south this time was indeed for trade, but we must be wary of others. If others take the lead in trying to break the rules with force, I think that the prince will not need to be merciful, right? "
Li Xiaogong frowned and said coldly: "If a small foreign country dares to offend the power of our great country, I will definitely draw my sword and drink blood to exalt the power of the Tang Dynasty!"
Li Zexuan praised: "Your Majesty, you are so brave! It's getting late, why don't you and Uncle Qin have dinner at your home?"
Li Xiaogong chuckled and said: "I heard that your boy is quite accomplished in eating and drinking. It just so happens that I will be at your house today to taste your food and wine, haha!"
Qin Qiong also nodded and smiled: "Haha, it's as it should be. Counting the days, Xiaoxuan, you and Yu Xi are about to get married. As Yu Xi's adoptive father, I haven't had dinner at your house yet!"
Li Zexuan sweated and said, "Ahem, it's because the boy didn't think well!"
"Ha ha!"
... ... ... ... ... ... ...
the other side.
Meng Wenhao read the newspaper on the bridge pier for a long time, and naturally he focused on reading the last few paragraphs of the newspaper several times. He was really excited about the generous reward for writing novels, and he also started to write novels in his spare time. The idea, but he just thought about it and immediately rejected it.
First of all, the studies at the School of Mathematics are already very stressful and the competition is very fierce. He also wants to get the first place in the monthly exam and get the opportunity to take his family to Zuixianlou for a free meal. Under normal circumstances, if a family You can eat and drink freely at Zuixianlou, and you can eat at least fifty or sixty dollars. If you order drinks, it will be more expensive. This is more cost-effective than writing a novel!
On the other hand, writing novels will definitely delay his studies. His parents will definitely not allow it, and neither will he himself.
Shaking his head and dispelling this unrealistic idea, Meng Wenhao looked at the sun above his head, then stood up to go home for lunch. Only then did he realize that he was near Yongdafang, and he had been blind all the way in the morning. Wandering around, I came to a place so far away from home without even realizing it.
Meng Wenhao sighed and walked home.
"Don't move! Robbery!"
When he walked to Xuanyifang, Meng Wenhao suddenly heard a deep man's voice coming from the alleyway between Xuanyifang and Feng'anfang. He was startled and quickly turned to the corner, carefully peeking into the alleyway.
I saw a big man in gray clothes, his face covered with a piece of black cloth pulled from nowhere, holding a cold kitchen knife in his hand, and he was holding it on the neck of an eleven or twelve-year-old girl. It is a picture of robbery in broad daylight.
... ... ... ... ... ... ... ... ... .
Let me tell you some bad news. Tomorrow, Xia Ke will go to the job fair again. There is nothing we can do. There are classmates around us who have received offers. Xia Ke is very anxious! If you don't run more diligently, you'll be dead! Tomorrow's update will be late, but it will definitely not stop! Sorry!
Thank you Destiny and Luck for the reward again and again!
(End of chapter)