In April 1754, although the temperature was gradually rising, the maximum temperature in St. Petersburg during the day was still below zero.

In the open space of the Royal Academy of Sciences, Mikhail . Romanosov was holding a strange-looking wooden device in his hand and holding it up in the air under the gaze of nearly a hundred scholars and students working at the Academy of Sciences.

The main body is just a strange device of a rectangular frame of thin wooden strips, at the top of which is a twisted spiral piece of wood, through which a stick passes through the center of the spiral chip, and at the bottom of the stick is fixed a thick spool, wrapped with a thick hemp rope, which is connected to a metal hook at the bottom of the frame.

Puff Puff – Puff Puff

As Mihai let go of his hand holding the spiral chip, the strange conch-shaped spiral wood slice turned slowly!

It turned out that this spiral wood chip was obtained by loosening the twine that was originally tightened to the tight hemp rope, and it turned faster and faster under the action of inertia.

Seeing this, Mihai tried to let go of his hand.

Smack!

But it was clear that the lift generated by the rotation of the spiral chips was not enough to move the whole device into flight, not even hovering.

"Ahh

Mihai shook his head and sighed.

Quack quack!

Despite this, the onlookers gave the president of the Royal Academy of Sciences a round of applause.

"Failed..."

Dejectedly, Mihai walked up to Crown Prince Peter with a strange device he had invented.

"Haha, you've done pretty well, don't be discouraged"

Peter greeted him with a smile.

"Since I saw the bamboo dragonfly for children in the Qing Kingdom displayed by His Royal Highness, I have been studying this thing for a while, to be honest, I have tried many methods, only this one is the closest to flying, but unfortunately it still didn't work"

"Well, I really don't have to worry about this little setback. And I do know that the principle of your 'aerodynamic machine' is similar to that of Leonardo in Florence. Reach. Finch designed a flying machine that is very similar."

"Yes, I did refer to Da. Fincher's spiral design, but up to . Vinci's vision does not allow for real flight, so humans are still living on the earth for 300 years."

Mihai nodded and said.

"Haven't you already made a hot air balloon, try to bring someone up another day?"

Peter gently patted Mihai on the shoulder and comforted.

"Hey, that's not going to work! In the event of an accident, the balloon will probably be denounced as a heresy by the Church and banned forever, and I can't afford it..."

"Don't worry, you don't have to fly too high, connect the carriage with a rope, if it doesn't work, just slide down the rope, there will be no accidents."

"Hmm... It's not impossible to think about it... Hey, I was talking about the aerodynamic machine just now, why did I run to the hot air balloon again! ”

"Haha, have you noticed that the hot air balloon and your aerodynamic machine are completely different things?"

"I said Your Highness, this is very obvious, hot air balloons fly by the principle of hot gas rising, and aerodynamic engines can fly by their own power strictly, there must be an absolute difference between the two."

"Yes, but you have to be careful, we know that the only ones that can fly in the sky are birds, right? Birds have wings."

Peter smiled and 'reminded'.

"Not really, if you use the principle of fireworks to use the flames, you might be able to fly if you use it in reverse."

"Oh, isn't that going to be a rocket!"

"Huh? Rocket? Your Highness, you have inspired me again! Hahaha, yes, I didn't think of it before! If you make it in the shape of a bow and arrow, and then install fireworks that can spray flames, you will definitely be able to fly! ”

Mihai suddenly began to talk to himself excitedly.

"Hey, I said where do you want to go? I'm obviously saying that you can try to put a pair of wings on this so-called aerodynamic machine, and then you can fly with the help of the wind, and you are good, and suddenly you think of fireworks again! ”

"Haha, I'm really sorry, Your Highness, I was too excited for a while, that's why I caused a misunderstanding to you, I apologize"

Mihai smiled awkwardly.

"Forget it"

Peter waved his hand as if he didn't mind.

"By the way, did you say you're too busy thinking all day? Even if you have a few assistants to help, it's not useful, right? ”

"What does Your Highness mean... Can you help me personally? Haha"

"I'm too lazy to do it, it's okay to use my mouth. Hey, I mean, although you are now the president of the Royal Academy of Sciences, many of those academicians and professors are foreigners, and they may not all be under your command, right? Besides, some people have areas that they are good at and what they are not good at, and there are definitely not many who are as versatile as you."

Peter suddenly said very seriously.

"I think, it's better to build a new university, and you just put on the name of the president, so that there will be more people under your hands?"

"This... Your Highness, I'm not alone in running a university, is it? ”

Mihai replied with some hesitation.

"Of course, it's also a matter of taking what you need. Some people want to live forever, while others just want to find the truth, but I think the two can be combined to achieve their own goals at the same time."

"Your Highness means that you want me to ask for whom?"

Mihai was an extremely intelligent man, and he immediately understood who Peter was referring to.

"Hey, you know"

"Well, I can indeed consider His Highness's suggestion... However, the situation is likely to change a lot recently, right? I'm afraid that the one may not be able to approve it."

Thinking about the recent changes in the situation of the major European powers, Mihai said with little confidence.

"So you have to hurry, or I'm afraid it will drag on for a long time."

"Well, I'm going to present a plan tonight."

[Some introductions about women's clothing bosses]

Dieng. Morality. Beaumont (French name Le Chevalier d'Eon) (5 October 1728 – 21 May 1810) was known as the knight Dion, or the French spy king Dajon. The Encyclopedia Britannica International Chinese edition is written by Eion de Beaumont, and some people translate it as Dion de Baumon. He is a famous gender controversy in the history of the world, as well as a god-like spy and master of swordsmanship.

In 1755, Louis XV set up The King's Psalms, a secret diplomatic agency entirely loyal to him, and recruited a group of secret envoys, spies, and confidants. Dieng was immediately pulled into the gang. At that time, France was heavily indebted at home and was also suppressed diplomatically by the British, and the British crown was already plotting an alliance with Russia. Louis XV decided to preemptively contain the Anglo-Russian alliance, and ordered Dion to bring a secret letter to St. Petersburg and give it to the then Russian Empress Elisabeth Petrovna to re-establish diplomatic relations between the French Empire and Tsarist Russia. He was accompanied by Chevalier Douglas, a knight disguised as a furrier in England, who abandoned his plans to disguise himself as a Douglas servant and disguised himself as his niece, Lia de Beaumont, and set out for St. Petersburg under the guise of traveling on medical orders. Before leaving, Louis XV handed Dion a specially bound edition of Baron de Montesquieu's The Spirit of Laws, which contained a secret letter to the Empress in the middle of the compartment.