Promotion and fortune in Song Dynasty

Half a month passed by, and Lu Ci finally ushered in his first holiday.

It was a rare time for him to be lazy, and he slept comfortably in the new house until broad daylight. After taking a leisurely bath, he learned from his servant that he had missed several waves of invitations from Yan Shu.

I don't know where Yan Shu got such energy. He usually leaves earlier and returns later than him, and he is also very diligent in visiting and socializing.

Lu Ci sent a person to the next door to apologize, and then he ate breakfast and lunch together, and then he didn't go out for a stroll, but stayed in his backyard.

Taking advantage of the sunny day, I simply asked people to spread all the materials collected recently on the ground.

Next, Lu Ci sat on a ponytail and meditated on them.

After a while, he came up with a vague idea, and tentatively fiddled with his ideal, as a small object to encourage the prince and Di Xiaofantong.

All men of this age like to wield knives and wield sticks, but it's okay to only give it to Di Qing, but it's absolutely inappropriate to put it on Zhao Zhen.

Lu Ci thought about it, since it is to encourage them to use their thinking, put safety first, and interest second, why not make some small inventions that entertain and teach...

It happened that among the small things he sent people to collect in the market, there were a few natural magnets mixed in them.

After grinding the needle with a magnet for a while, Lu Ci successfully regularized the arrangement of the magnetic domains inside the steel needle, showing magnetism.

When specifically installing the magnetic needle, he made a variety of attempts.

The first test was the 'water float' method.

Lu Ci quickly discovered that although this method is convenient, it is fine to place it on a stable surface, but it cannot withstand any bumps.

Once the liquid in the floating needle is shaken, it will cause the magnetic needle to shake greatly, and the accuracy will also drop sharply.

This is not what he wants.

After Lu Ci poured out the water dissatisfied, he tried the method of placing the fingers and claws and the lip of the bowl respectively, and found that the disadvantages were not small.

Although it runs fast, it is also too easy to fall.

Lu Ci was not disappointed, and after a little thought, he was ready to try the 'Lianxuan' device.

At this moment, from the direction of the wall behind him, there was a slight rustling sound of branches and leaves.

He remained calm, and only slightly moved the direction of the small wooden block that supported the water basin...

The calm water soon became like a mirror, vaguely reflecting the curious little Douding lying on the wall.

The characteristics of Yan Shu's smooth flow are also reflected in his offspring - he has five sons and one daughter under his knees before he is born, and he can be called a big winner.

The four sons in front of the row should all be studying in Taixue at the moment, and the fifth son is still young, so he stayed at home and invited his master to enlighten him, so it must be this one who is probing his head at this time.

It took Lu Ci a moment to recall the other party's name, and when he remembered, he got up, walked towards him, and invited him with a smile: "Instead of lying there lying hard, why don't You Lin come down and sit down?"

Yan Youlin was concentrating on peeping, when suddenly his name was called, and he almost rolled down in fright.

Fortunately, Lu Ci was well prepared. He strode forward and quickly grabbed his arm who was lying on the not-so-high wall.

Yan Youlin was usually used to messing around, so he boldly threw away the book boy and leaned over the wall to peek.

Now that he was caught right away, according to his usual practice, he should be running away.

But I don't know why, this gentleman who has always been loved by his father and looks very good-looking, has a very gentle smile on his face, but he feels trembling in his heart and dare not be mischievous.

Seeing that Yan Youlin was as quiet as a chicken at this moment, Lu Ci let him slip over the wall and sat obediently on the stone bench, not looking at the parts scattered around, thinking that he was a well-behaved man with a smile on his face Immediately more brilliant.

He has always liked well-behaved and sensible children.

Lu Ci patted Yan Youlin's shoulder dotingly, and said with a smile, "Uncle Tong didn't invite me, but now I invite you to sit down, it's an apology to him."

Yan Youlin's heart is not good, and he is already sitting on pins and needles.

Although he has the nature of a child, his family education is quite strict.

I don't know, if I really wait until my father finds out, the consequences will be serious, so why talk about 'repentance'?

Just when Yan Youlin's eyeballs were spinning wildly, and he was racking his brains to find an excuse to escape, Lu Ci sent people some snacks and fruit tea, and then showed him the half-finished compass that he had just looked at for a long time but didn't understand.

After Ren Yan Youlin watched it all over, he continued to make the device slowly.

"……what is this?"

Yan Youlin couldn't help asking.

Lu Ci smiled: "Have you heard of Sinan?"

Yan Youlin frowned, apparently he had never heard of it, and he didn't understand what was so strange about such a small needle.

Lu Ci smiled and said: "After you go back, you might as well look through the "Han Feizi Youdu Chapter" in your spare time. There is a record in it of 'the former king established Si Nan Yi Duan day and night'."

Yan Youlin seemed to understand but half understood: "What is that for?"

Lu Ci was not in a hurry to explain, but slowly put mustard seed wax on the waist of the needle, and hung the magnetic needle in a windless place.

Yan Youlin opened his eyes wide, watching the steel needle tremble, then lightly turned around, pointing to a certain direction.

After finishing the rough finished product, Lu Ci elaborately decorated it, while smilingly explaining the principle to Yan Youlin who was completely aroused by this miraculous scene.

However, although Lu Ci tried his best to explain in the most concise and popular way, Yan Youlin is just a child who has just been educated, so how can he understand these principles?

The more he didn't understand, the more curious he seemed to be scratched by a hundred claws. He couldn't even eat delicious snacks. Before Lu Ci put the magnetic needle into the belly of the woodcut guide 'Turtle', it was only a matter of grinding and externalizing it. Even after the post was finished, he couldn't wait to go back and read the books that Lu Ci mentioned.

When Yan Shu finished visiting his friends who lived in the north of the city, he came back in a good mood, and after taking a bath, he went to the Taotie's family who had missed his invitation lazily to try the royal meal. Holding the book "Han Feizi" in his hands, he gnawed intently.

"..."

What's going on here?

Yan Shu stared at him suspiciously for a moment, then summoned his bookboy to inquire.

However, the book boy missed Goro's whereabouts in the afternoon, so naturally he dared not admit it at this time.

In addition, it was a good thing that Yan Youlin was willing to take the initiative to study. Although Yan Shu couldn't find out the reason for a while, he didn't investigate it carefully.

After taking a bath and changing clothes in a hurry, he deliberately put on a malicious face, and went leisurely to his new neighbor's house.

I thought that I could catch Lu Ci by surprise, but unexpectedly, with the help of others, I saw Lu Ci sitting leisurely in the living room. In front of him was a rich table full of royal meals, and there was a pair of empty bowls and chopsticks next to him. It was obvious that it was for him. waiting.

Yan Shu raised his eyebrows: "How did Yu Yu know that I'm coming?"

Lu Ci smiled sincerely: "Uncle Tong, why don't you believe that I always wait for such a vacant seat every night, but this is the first time I have waited for you?"

"Oh?" Yan Shu smirked and said, "Pu Yu is so affectionate and friendly, it makes me feel bad for being shut down three times."

The two looked at each other with smiles for a while, and at the same time decided to stop fighting and fight each other before the rich imperial meal became cold.

Lu Ci had been coaxed by Lu Ci in various ways, so he invited the guests out of nowhere. Yan Shu, who got some delicious food from Lu Ci's mouth, couldn't help being very satisfied after being full of tea and food.

After Lu Ciping stepped back, he lazily fell on the soft bed, and hooked the brazier to the side closer to him.

Yan Shu's eyelids twitched when he saw it, resisting the urge to hook the brazier back to his side, and sat down on the soft bed in a gentle manner.

He wanted to tease Lu Ci, who should have no image at this time, but when he took a closer look, he realized that the other party had taken advantage of his unique appearance, and even the posture of this lazy man showed a bit casually Come elegantly.

So he changed the subject and asked: "It's rare for you to take a rest, so you just fell asleep like this?"

Lu Ci laughed and said, "It's rare to have a day's dream in a floating life. When you can sleep, you should sleep later."

Regarding the reception of the youngest son of the Yan family, he was prepared to keep his mouth shut.

It's obviously a good thing, if Yan Shu, who has always been strict with his son, finds out, Yan Youlin will definitely be punished by the family law.

The reason why he didn't tell Yan Youlin at the time of parting to reassure the other party... is because the little man looking at the face of the bun is depressed and embarrassed to say the request, which is really cute and interesting.

Just ask the other party to continue to be frightened for a while, it can be regarded as a naughty little lesson.

Yan Shu didn't know that the youngest son had been teased by Lu Ci, and the corners of his mouth twitched slightly: "If I remember correctly, last time I was only a little late to get up, and I fell into the softness of your sentence 'Why sleep for a long time when you are alive, and you will sleep forever after death' knife."

"Really?" Lu Ci changed the subject very naturally: "Which house did you visit today, and where did you go to have fun afterwards?"

Yan Shu smiled and said, "It's a coincidence that the person I met today is also a Sanyuan."

Lu Ci blinked: "Wang Sanyuan?"

Since the founding of the Great Song Dynasty, there have been only three people who have won the Sanyuan.

The leader has passed away long ago, and the only ones still alive at this time, apart from Lu Ci, is Wang Zeng, who also had the brilliant achievement of winning three yuan more than ten years ago.

Unlike Lu Ci, whose promotion did not follow the Basic Law and stepped on natural disasters and man-made disasters, Wang Zeng's official rank was not high.

But the victory lies in playing steadily and steadily, the department is noble, and it is close to the emperor.

In Lu Ci's impression, although Wang Zeng belonged to the faction close to Kou Zhun, he was a typical 'friend rather than party', he didn't really stand in line, and when the critical moment came, he only acted on his own will.

On the contrary, we can make friends one or two.

Yan Shu glanced at Lu Ci who was thinking, and sighed heavily on purpose, as if he was extremely regretful, and said, "I wanted to take you there, so I could introduce you, but I don't want you to sleep hard, so I can only talk about it next time." gone."

Hearing this, Lu Ci's eyes sparkled, and he looked at Yan Shu and smiled slightly.

Because he didn't want to hurt Yan Shu's good intentions, what he didn't say was——

If he really wanted to know someone, why would he need a friend to introduce him?

After Lu Ci stayed on for a while, Yan Shu reluctantly went back home when he saw that it was getting late.

Because it was next door, Lu Ci didn't bother to deliver it.

Yan Youlin, who had been on tenterhooks for a long time, cautiously leaned against the door to peek at his father, waiting for the sentence to be reprimanded.

However, he waited and waited until his always elegant and exquisite father was walking, and when he saw no one around, he let out a "burp" in relief.

Yan Youlin: "..."

Hearing that extremely loud belch, he suddenly stopped being frightened.

When Yan Youlin was relieved, Di Qing, who was far away in Fenzhou, also got a solid and large package from his master.

As soon as he heard that it was from Bianjing, Di Qing thought of something, and his eyes lit up.

After I actually got the mail, I was so excited that my hands were shaking.

In his most exaggerated dream, he did not dare to imagine that Lu Zhizhou would send him a letter after he came to Beijing to report on his work!

Looking at the voluminous package, no matter whether he knew the identity of the sender or simply looked at the size, he couldn't help being envious of Di Qing.

The Sheren who had seen Lu Zhizhou send Di Qing back with his own eyes couldn't stop staring at him with strange eyes.

It's obviously not related to him, so why did Lu Zhizhou take care of such a young boy?

Di Qing didn't have any thoughts to pay attention to other people's eyes. On the way, he hugged the package tightly in his arms, with a bright smile on his face, and ran back to his room. After gathering his mind, he began to unpack it carefully. .

When the thin letter on the top was revealed, Di Qing, who mistakenly thought that the thick stack was full of letters, suddenly felt that he was so happy that he could almost go straight to the sky.

Impatiently and excitedly, he rolled back and forth on the bed a few times before continuing to dismantle it with a flushed face.

Immediately after that, what was revealed was the unexpected "Zuo's Spring and Autumn Annals"...

Di Qing: ...

The author has something to say: Notes:

About the compass: "Han Feizi Youdu Pian" has a record that "the former king set up Sinan with the end of the day and night", and the end of the day means the square; the Sinan it refers to is probably made of natural magnets. It looks like a spoon, round The bottom is placed on a smooth "land" engraved with directions, and the handle of the spoon can guide a magnet to point to the instrument, that is, as described by Wang Chong, "Sinan's spoon, when you throw it on the ground, its guide".

From the appearance of Sinan to the invention of the compass, it has gone through a long evolution process.When exactly the compass came out, there is no definite statement.Some documents about the compass in the late Tang Dynasty and the Five Dynasties have already mentioned "(magnetic) needle" and "positive needle" , "sewing needle", etc., most likely referring to the compass on the compass.However, the earliest clear records about the compass found so far are related records in the Northern Song Dynasty's "Wu Jing Zong Yao", "Meng Xi Bi Tan", "Materia Medica Yan Yi" and other documents.

In "Wu Jing Zongyao" contains the method of making guide fish: "Cut it with a thin iron leaf, two inches long and five minutes wide, with the head and tail sharp like a fish, burn it in charcoal fire, wait for it to turn red, and use an iron seal The head of the fish comes out of the fire, and the tail is in the right position, dipped in the water basin, if there is no tail number, it will be stopped, and it will be collected in a secret container." However, the magnetism obtained by this method is still weak, and its practical value is not great.

Another artificial magnetization method is described in "Mengxi Bi Tan": "The Fang family uses a magnet to sharpen the needle, and it can guide." Analyzing this method with modern scientific knowledge, we can know that it is a magnetic field using natural magnets. The function is to make the arrangement of the magnetic domains inside the steel needle regular, so that the steel needle shows a magnetic method.It is simple and effective, and creates important technical conditions for the appearance of magnet pointing instruments with practical value.

In addition to the exploration of artificial magnetization methods, the Song Dynasty also conducted experiments and comparisons on the device method of magnetic needles.In "Mengxi Bi Tan", Shen Kuo mentioned four installation methods: "floating on water", placing fingers and claws, placing bowl lips and "hanging strands".The water float method was widely used in the Song Dynasty, and the guide fish mentioned by Zeng Gongliang also used the water float method.This method is simple, but as Shen Kuo pointed out, "water floats and sways", which is its major shortcoming.Regarding the two and three two methods, Shen Kuo pointed out that their strengths are "speedy operation", and their disadvantages are "hard, slippery and easy to fall".Shen Kuo highly recommends the fourth method, and believes that "the method is to take a single cocoon strand from a new silk thread, sew it with mustard seed wax on the waist of the needle, hang it in a place where there is no wind, and the needle will always guide."This is indeed a better installation method.In addition, Chen Yuanliang in the Southern Song Dynasty also introduced a new method of installing the guide turtle that was popular at that time in "Shi Lin Guang Ji": install a natural magnet in the belly of the woodcut guide turtle, and dig a smooth hole under the belly of the wooden turtle. , aligned on the sharp and slippery bamboo nails at the top.Because the frictional resistance at the fulcrum is very small, the wooden tortoise can rotate freely as a guide.This is the forerunner of the dry compass that appeared later. ("Cultural History of the Song Dynasty")