Lan Ruochan

Chapter 376
Strictly speaking, Qingyun didn't see anything.

The end of the torch light is still dim.

But Qingyun is Qingyun after all, and the knocking of footsteps on the stone slab is the only fluctuation in this left-of-world land.

He is most sensitive to fluctuations. According to the echo from the corridor wall, he can already clearly feel that the structure behind the stone wall is discontinuous, and there is obviously a niche.

Zu Dianzhi didn't know why he was so excited about his fifth younger brother, but he always knew that Qingyun had his own way of doing things, so he raised a bright candle and followed closely behind him.

Going back for tens of feet, there is a corner in the corridor.

"It's here!" Qingyun slowed down and observed the wall carefully.

There was nothing abnormal on the wall, but Qingyun's feeling clearly told him that there was a world beyond the stone wall.

Tsunade frowned.

Judging from the condition of the stone wall, even he couldn't see anything wrong, and the knocking sound was no different from other places. Why was Qingyun so sure that there was something wrong here?

But in line with his brother's trust, he launched a comprehensive investigation.

There is absolutely no problem with the splicing of the stone slabs and the humidity of the floating soil in the gaps...

Could it be...

Swipe!Zu Dianzhi didn't know where to pull out a long whip!The whips dance and crackle.

"Fifth brother! You seem to be more sensitive, so help Brother Yu to study the details together."

Qingyun nodded upon hearing this.

Zu Tunzhi flicked his wrist, the shadow of the whip was like a dragon, heaved up and down, and crashed into the surrounding stone walls.

Qingyun closed his eyes tightly, carefully feeling the subtle changes in the sound waves.

Suddenly, he opened his eyes and pointed to the sky, "Above! The passage is above."

He raised his head and took a closer look. Fortunately, the corridor was not high, so he could see the dome clearly at a glance.

A crack in the stone slab five paces away caught Jizhi's attention. The soil here seemed to be darker than other places, and the water was sufficient. It must have been turned over by someone in recent years, unlike other stone gaps where only a thousand years of dead silence remained.

Pulling up his body, he tapped a few times near the stone gap, and he understood the general idea in his chest.

With a flash of silver rainbow, the sword is like a dragon, breaking the fetters of time.

Boulders roared, dust was flying, and the feldspar end of the dome slowly collapsed...

Stone ladder?The fallen stone slabs turned out to be neatly polished steps?

The ancient mechanism thousands of years ago is so exquisite!
While admiring, the two brothers climbed up the steps, walked through a long and narrow passage, and turned down another step.

Qingyun's feeling was indeed right, there was indeed a world of its own on the other side of the stone wall just now.

The secret room in front of me was more than ten feet away from the main corridor, even if I knocked on the wall, I couldn't find anything abnormal.

If the blueprints of the passageway were not obtained in advance, probably only a unicorn like Qingyun could have a glimpse of some clues.

The secret room is not big, three feet square, and there is a stone door at the other end.

There is also a very complicated locking mechanism on the stone gate, although it will take some time to unlock it, but it is hard to beat.

While fiddling with the mechanism, he guessed with the fire-raised Qingyun about the strange treasure behind the door,
"Someone has been to this place. Someone has been here not long ago. The mechanism of the stone steps has been opened, and the stone lock also has traces of opening. And that person is very careful, and also cleaned the dust that fell from the mechanism to prevent the secret room from being opened. The entrance was noticed by later generations."

Qingyun scratched his head, "So, someone else should have already entered here, so there won't be any treasures?"

"I don't know, shall we make a bet?"

"What's there to gamble on? Someone has already been here. What else can there be? There may not be any living people?"

"Haha, if there is a living person, I will swallow this stone lock!"

Slap!Junzhi was joking and just touched the last mechanism of the stone lock, and the stone door slowly opened.

The flame of the torch squeezed through the door, and the red shadow swayed for a while.

Seeing the scene in the stone room, the smiles on the faces of the fellow sufferers froze at the same time.

Especially Zu Dianzhi, who was almost smothered from the neck up.

There is nothing in the stone room, only a stone turtle.

On top of the stone tortoise, a boy was lying on his side, as if he was sleeping soundly.

"It's so fucking good!", Tinzhi cursed secretly in his heart, looking at the stone lock in his hand, wondering if he should chew it down.

Fortunately, Qingyun didn't seem to be bothered by this, he walked up in three steps at a time, and checked the boy's breath first.It really is alive!

He looked the boy up and down carefully several times, and wondered, "Why is this boy's face so familiar? I feel that I must have seen him somewhere."

Tie Zhi obviously felt the same way, "Yeah, I think I've seen it too."

"He has been sleeping here? Doesn't he need to eat or drink? This, this is too weird!"

Ji Zhining observed for a while, and thought for a while, "It is said that Taoists have a kind of cultivation method called sleeping skills, which can be used for a long time without eating or drinking, without smelling or seeing. You just need to find a safe place to sleep. But I have never heard of anyone practicing this skill in the body of a boy. But if it is not for this skill, it is really inexplicable to seal the boy in this dark secret room."

Qingyun's eyes gradually shifted to Shi Gui, and he screamed again in surprise.He slapped his forehead violently, pointed at the stone turtle and exclaimed, "Second brother! Second brother! Help me see this stone turtle, is it the legendary divine beast?"

Dragon head, turtle body, unicorn tail, all four limbs curled up on the ground, this is the head of the Nine Dragons, under the stele!
Zu Dianzhi nodded to Qingyun, but he didn't understand what his question meant.

"After you return to the present world, if you are lucky enough to meet the bully boy, remember to put on another coat for him, he is very cold."

This is the sentence that Qingyun heard in his dream when Zixia's magical power broke through when he was drunk in the snow of Yuling Tribe that day.

The volcano erupted, and the dust covered the sun, an old man in Taoist costume said to him in his dream.

Bully the boy?Isn't it the bullying boy in front of you?
Although Qingyun once doubted whether the dream of the volcano that day was an illusion or real, but the result of his internal strength breakthrough and thus comprehend the Nine Yang Strength was extremely real...

Without hesitation, Qingyun immediately took out the warm clothes prepared in advance from the bag and put them on the boy.

Tie Zhi was puzzled, "Why?"

"It's a promise, a promise in a dream."

Li Zhi was dumbfounded, looking at Qing Yun with a confused expression on his face.As an absolute supporter of materialism, he felt that Qing Yun seemed to be getting more and more talkative.

Boom!

I don't know what mechanism Qingyun touched by mistake while helping the boy to dress, the bully suddenly opened his mouth and spat out a bronze box.The two of Qing Yun and Tunzhi didn't notice for a while, and the copper box directly hit the floor.

Li Zhi picked up the copper box and took a look. On the box cover was a golden dragon, and around the side of the box was the pattern of the nine sons of the dragon.The eldest son of Tyrannosaurus was engraved in the middle of the lock.

Jizhi fumbled for the pattern on Baxia lightly, but couldn't find the mechanism to open the box for a while.

When he inspected it carefully, he was even more surprised!
It turns out that the three-dimensional nine-piece inlaid gold turned out to be an interlocking overall mechanism, the gold and copper are interlaced, and faintly intertwined with the dragon on the top of the box.

"""""Knock on the blackboard time"""""

There are two consecutive chapters without time to knock on the blackboard, mainly because the author has recently published a new book-"I am an anchor in Datang".This new book is based on two anchors who have tens of millions of fans on YY and DouY, and is created using real-life IP.So the focus of the latest update has shifted a bit. "Lan Ruo" is a lot of laziness, I hope readers understand.

Since it is the author's own new book, then the author will play a little trick and occupy a little resource from everyone here, asking for collection, Zhang Ping, and promotion!
In this section, the knowledge points at the back of the article are restored, because there are too many accumulated problem points.Especially since the Battle of Gwangju to the present, a lot of common sense related to electromagnetism has been involved.

First of all, the ancient magnet is written as Cishi. In this article, in order to show respect for the ancient title, the two names are mixed.The name of the magnet is used when explaining, and the dialogue is written as Cishi.

When talking about taking the needle for General Kong, Zu Yuzhi used "the unique Great Compassion Stone at the northern foot of Yinshan Mountain".

This ore is extremely magnetic, better than ordinary lodestones.Then we know that there are all kinds of natural magnets in nature, and the so-called magnet effects are not absolutely the same, and are related to the mineral components in them.The most magnetic rubidium magnets or cobalt magnets hardly exist in nature.But magnets containing samarium and cobalt are always much stronger than conventional magnets.

Modern industrial samarium cobalt magnets are actually separated from rare earth ore and remolded.

Therefore, the main setting of the Great Compassion (meaning Great Compassion/Magnetic Great Compassion) stone in this work comes from the rough samarium cobalt magnets associated with rare earth ores.

my country's largest rare earth mine and the world's largest heavy rare earth producing area is the Baiyun Obo mining area at the northern foot of Yinshan Mountain.Obo, Obo also means altar.This place was originally the grassland of the Mongolian Darhan tribe.Darhan means sacred and inviolable.Therefore, this article is restored to Shengli Peak.

When storing the magnet, in order to filter out its magnetism, it adopts a layer of metal shielding method.

There are many legends about the use of magnets in ancient times. Among them, the most famous ones are that Qin Shihuang made magnetite doors to prevent assassins, and Malone's magnetite array can break bald trees.

"Sanfu Huangtu": With magnolia as beams and magnets as doors.The Magnetic Stone Gate is also the North Que Gate of Afang.The door is in front of Efang, and it is all made of magnets, so its eyes are specially designed, so that those from the Siyi Dynasty will have a hidden armor with a sword in their arms, and they will be threatened when they enter.To show God.It is also called Humen.

"Book of Jin Ma Long Biography": Or the road is full of magnets, the thief bears the iron armor, and cannot move forward.

Many people think that these legends are pure nonsense and completely unfeasible.Not to mention that most of the swords in Qin Shihuang's period were bronze, even if they were iron, it is impossible to carry a sword on the body and be sucked by the magnetic gate.The same goes for Malone's Magnetosphere.

But these two stories are clearly written in the history books.In order to explain this truth, we have the content of this section.If the ancients really wanted to use the magnetic field to hinder the passage of people carrying metal weapons, they could only rely on the electromagnetic induction principle of Lenz's law.

It's time to test your high school physics concepts.The author learned Lenz's law about 30 years ago.So I don't quite understand what the current teachers say in class.But a working dog who can't speak high school physics is not a good internet writer, so the author is still obliged to talk a few more words here.

What is Lenz's Law?As explained in this section, it is a type of law of inertia.What is the law of inertia? In terms of the most basic mechanics, Newton's first law is the law of inertia, which can be summed up in eight characters—whatever moves keeps moving, and what stays stays at rest.Then Lenz's law is the same, we know that the metal (conductor) cutting the magnetic force line will produce an induced current.The induced current will also generate a magnetic field, which is always hindering the change of the magnetic flux, or in other words, always hindering the action of cutting the magnetic force lines.

The generation of this induced current is born to counteract the electromagnetic changes produced in the magnetic field.Then the next step is very simple, the conductor will be stressed in the electromagnetic induction, how to judge the direction of the force?It must be opposite to the direction of the conductor cutting the magnetic force line, and it is the new electromagnetic change in the bound magnetic field.To understand Lenz's law in an inertial way, in many cases, the direction of judgment is much easier to use than the right-hand principle.

OK, let's go a long way.Now we come back to the content of this article.Assuming that King Shou of Yin, also known as King Zhou, made a door with a magnet, and there is a magnetic field in the door, how can it be used to prevent the entry of people with sharp metal weapons?

The answer is to lay a conductive floor, copper floor is used in this paper.In this case, the human body, as a conductor, will cause a potential difference due to electromagnetic induction when striding.The body and the metal it carries will conduct electricity and thus be pulled backwards.The faster the intrusion, the greater the pull.Although the description in this article is still somewhat exaggerated, this force is definitely more powerful and effective than the magnetic force itself.

There is a kind of toy in the world that is made according to the principle of Lenz's law. The parts are very simple, that is, a magnet and a metal tube.Put the magnet into the metal tube, the falling speed of the magnet will be greatly reduced.In this process, the metal pipes themselves are connected and form a loop, so the effect of Lenz's law is more intuitive.In this work, this phenomenon is restored by using the cannon pillar and a magnet.

Paoluo is a hollow copper pillar, which is also recorded very clearly in the historical records.Burn fire in the middle for execution.In turn, he can also be designed as a channel for magnetic lifting devices.

At this time, if someone insists on digging into the dead end, ask the author what evidence shows that the ancients knew the principle of Lenz's law.Then I can only talk to you again about Qin Shihuang's palace gate and Ma Long's mercy stone formation. Why are they able to block hundreds of soldiers?
Regarding the application of Lenz's law, this article has not used it to the end.Readers should have already discovered that there are almost no scientific principles that are used only once in this work. Simple tools are used to pave the way for a more complex and awesome device later on.

So is there bound to be a more complicated and more powerful electromagnetic induction device in the following article?

Of course there will be!Not only will it, but it will also restore a well-known allusion, a well-known secret.

(End of this chapter)