Yonglong eight years.

There is no doubt that Zhang Sui became famous.

Even, Zhang Sui was a little embarrassed.

After all......

Ninety percent of the things were actually prepared by Li Chong, and he only completed the last small step - calculation, and as a result, he was labeled as a disciple of Li Chong for no reason, maybe Li Chong had some intimate relationship.

Fortunately......

Although this one is smart, he is not very good-looking.

Otherwise......

Li Chongna really jumped into the Yellow River and couldn't wash it away.

It's true!

He's not a man!

Originally, Li Chong also thought about whether he should make a statement.

But after thinking about it......

Forget it!

After all, there is a saying that the more you explain, the more you cover up.

Time will make everyone understand that Zhang Sui is indeed a genius.

Let's be honest.

This also made Li Chong can't help but suspect that this Zhang Sui may be a well-known figure in history.

Otherwise......

It doesn't make sense!

Of course!

Li Chong just guessed casually, in fact...... If it's really just a nobody, that's possible.

Ask ......

Who can be compiled into the history of the Tang Dynasty, which one is not a young genius and is good at reading?

Such people actually abound.

Other than that......

Li Chong really didn't know that there was a person named Zhang Sui in Datang who was so good at mathematics.

Datang's mathematics has been said a long time ago.

In fact, compared with the Wei, Jin, Southern and Northern Dynasties, it is actually regressive.

In Li Chong's impression, Li Chunfeng is already the peak of the Tang Dynasty, and there is another one, which should be a line.

However, the line is a monk, and Zhang Sui is not a monk.

Li Chong couldn't help but look at Zhang Sui and thought, could this person be a line?

The line is very good, it seems to be even better than Li Chunfeng.

Saying......

What year is the line?

It should be the time of Tang Xuanzong.

Regarding Zhang Sui's distress, Li Chong could only touch his beard like Li Er and said: "This is what you deserve, don't be so vain." I didn't deliberately let you put your name first, but if I really didn't have you, indeed, I didn't figure out the relationship here, I'm old~"

In the end, Li Chong even made an excuse for himself.

It was as if he could be counted if he was not old.

Zhang Sui replied seriously and respectfully: "Old Li, you are so smart, how can you not figure out the relationship here." And...... I just completed the calculation, and the rest was solved by you, Mr. Li, and I am really ashamed to write my name in front. ”

Li Chong said: "Although I said that I have completed ninety percent of the things, but if I don't finish the ten percent, then it is nothing." Forget that, you should continue to study chemistry. ”

Zhang Sui: "But I have no direction." ”

The most important thing is to be hit by Li Chong.

Li Chong said: "You don't have to care too much about what I told you before, after all...... It's also hard to directly verify. Next...... Since you don't have a goal, I'll give you a goal. ”

Zhang Sui: "What is it?" ”

Li Chong said: "Have you heard of airplanes? ”

Zhang Sui has been reading science newspapers one after another over the years, and he has also seen some.

Zhang Sui: "I understand a little bit. I don't understand it very well, though. ”

Li Chong said: "If you want to make an airplane that can fly, the shell of this aircraft must use a metal that is less dense than copper and iron. I think...... This metal must exist, it's just ...... It is more difficult to refine it than it is to refine copper and iron. I hope you can refine this metal so that airplanes can be built. ”

In fact......

In recent years, the research on the Liaodong side has also been constantly upgraded.

Even......

If a metal case doesn't work, why not use hardwood?

Except for the necessary frame of the aircraft, steel or iron is used, and all other aircraft are replaced by hard, lighter wood.

But......

Don't talk to Zhang Sui about this, Li Chong has forgotten, can he now point out the electric spark ignition technology?

After all......

His current understanding and use of electricity is no longer comparable to what it was at the beginning.

And if you want to get into the air, you have to solve two problems.

One, is the problem of aluminum.

The other is the thrust-to-weight ratio of the engine.

Historically, it has not been without the use of the simplest steam technology to achieve airplanes into the sky.

But that's a special case.

And......

It seems that people don't burn coal directly, but burn pulverized coal.

The reason why the simplest steam technology does not work is because it does not have a thrust-to-weight ratio.

What is thrust-to-weight ratio?

The scientific explanation is that - the ratio of aircraft engine thrust to engine gravity or aircraft gravity.

As we all know, if a large boiler is installed on an airplane, the aircraft is far inferior to a gasoline engine in terms of weight and whether it burns sufficiently.

That's why airplanes should at least run on gasoline or diesel.

The first aluminum problem is easy to solve, as mentioned above, if it really doesn't work, then use wood, and reduce the weight of the places that can reduce the weight.

And then......

The thrust-to-weight ratio of this engine can only be solved by a gasoline engine.

Before......

When Li Chong didn't have much research on electricity, of course, it was not good to make a nozzle for a gasoline engine.

But now......

Li Chong can only say that it feels quite simple.

After all, it's nothing more than a process of boosting pressure and then generating an electric spark that breaks down the air.

He can play Tesla coils to penetrate air infinitely.

Other than that......

In the case of this battery, it is necessary to use a battery that is well sealed, otherwise the aircraft may easily leak and have an accident when performing various maneuvers in the sky.

Do what you think!

Li Chongdang even gave Liaodong a letter to repair the book, and then asked them to send some craftsmen over and let them cooperate with him to complete this work.

Liaodong side......

After receiving Li Chong's letter, he immediately sent the craftsmen who had studied this aspect most deeply in his country.

Li Chong thought that there was the young man he was optimistic about before.

But what is the name of this young man, to be honest, after so many years, he has forgotten a little.

When the craftsmen from Liaodong arrived, Li Chong asked slightly, and then he learned the other party's name again.

Moreover......

I also learned that the other party had passed away a long time ago.

This is probably also a common problem of some craftsmen, due to a long time of forgetting to sleep and eat, the result of the living habits are not very good.

So......

It is often easy to get sick at a young age.

In this regard, Li Zhong can only say that the other party has made a very significant contribution to the development of science, and hopes that the monarch of Liao State will be able to treat these people who have made great contributions to the development of science in the future.

And then next......

It's about designing the shape of the engine.