Luoyang, in the palace where Li Er is located.

Although the world is peaceful in Datang now, to tell the truth, Li Chong has not worried about the people of Datang for a day.

It's not ......

When he came to settle the account for Li Er and settle the income of the steam mill this year, Li Zhong mentioned the next great drought and famine.

He counted the days, and it was almost in the next year or two.

Of course!

He didn't know if he remembered it.

In any case, there will be at least two major droughts and famines in the next decade.

So much so that in the end, even the Tang Dynasty had to go to Luoyang to eat.

Although they have now arrived in Luoyang, there is no such problem as saying that they want to eat somewhere else.

However, no matter what, the people of Chang'an can't say that they don't care.

I heard Li Zhong tell himself that there would be drought and famine next.

Li Er also said, "What's the use of you telling me this? You have to tell Qian'er about this."

Li Chong: "Isn't it hard for me to find an entry point? If I say I've figured it out with my fingers, the devil will believe it."

"But speaking of which, this drought is not something that human beings can stop."

But just after Li Chong finished speaking, he thought of his artificial rain again.

Let's be honest.

This artificial rain has been tested hundreds of times, sometimes it seems to be spiritual, and sometimes it seems to be ineffective.

As for why you want to say why you add a "like", it is because, due to the lack of comparative tests, even if it is sometimes really spiritual, in the spirit of scientific rigor, it is a question mark.

This is also the reason why until later generations have questioned whether artificial rainfall is really useful.

And in Li Chong's opinion.

It works, it should still be useful.

Merely......

At best, it can be regarded as the icing on the cake, and it may not be able to do charcoal at all.

But......

If there is really a disaster in Datang next, then you might as well try it.

In fact, the current Datang should be even better than the history books in terms of disaster resistance.

This is mainly because, in the history books, the Tang Dynasty was able to win the battle against Goguryeo.

Years of conquest, this was originally very unfavorable to Datang.

Add to that the drought or something, and it's even worse.

But now it's different, almost every household should have a lot of food in stock.

Even if there is no way to compare with the prosperity of Kaiyuan, no matter what, it should be able to barely last a year, a year and a half?

After chatting with Li Er for a while, Li Chong went back and asked his son-in-law to go to the states around Luoyang to have a look.

First, Li Chong himself can know the current situation of Datang.

Second, it can also train them to understand the people's feelings.

Third, by the way, they made a secret visit to see if their steam mill had any moths, or ruined the reputation of their Li family.

Let's be honest.

His steam mill has been running for so many years.

There are no moths, and it is estimated that Li Chong himself does not believe it.

Merely......

As long as the accounts are not too excessive, then Li Chong will choose to turn a blind eye.

After all......

You eat meat yourself, and you can't help but let the people below drink the soup.

This can be regarded as a small exercise of Yao Yuanchong and Zhang Renqing's ability to fight against corrupt officials and corrupt officials.

The two are 18 years old this year.

is already an adult guy.

Leaving such a thing to the two of them, Li Chong is relatively relieved.

This is their own industry, and the people hired are all ordinary people, and it should be said that there is no such exaggerated thing as a powerful aristocrat who wants to take the lives of two people.

After receiving Li Chong's assignment, the two set off shortly after.

This is also a kind of travel for the two of them to a certain extent.

Generally speaking......

People who have not experienced travel in the private sector have a high probability of becoming the kind of officials who are not very good in the future.

[In view of the general environment,

Li Chong naturally didn't want the two of them to become the kind of officials who weren't very good.

And then give birth to a child......

I guess I'll have to wait another two years.

After all......

Today, his two daughters are only about fifteen years old.

After all the orders were given, Li Chong could continue to lie down again.

The four concubines are all old.

He's also sixty years old.

But it's okay, at least the son and the new city, there is nothing dissatisfied.

Liaodong here.

In the past two or three years, numerous flight experiments have also been conducted.

However, because the old steam engines were too cumbersome, there is no doubt that most of these experiments failed.

But there was a steam airplane model machine that succeeded and flew up.

And it flew out for a short while.

But it's only a short flight.

And this model machine itself does not have much practicality.

It is to make it fly, and various designs after slimming.

This is not the same thing as a manned design.

All I can say is......

Gasoline engines should be the direction of the future, but ......

The invention of the ignition device of the gasoline engine was another difficult problem in front of them.

Li re-evaluated and touched that the next thing they have to do is to solve the battery storage technology and the voltage transformation technology.

On the contrary, these two techniques, you say it is difficult, it doesn't seem to be difficult, that is, Li Chongdu returned the knowledge to the teacher.

That's a bit of a way to say that.

It can only be said that it is starting from scratch step by step.

Let's be honest.

If this was when Li Chong crossed over, it was his high school years, then these two problems might be easier to solve.

After all, high school is the period when most Chinese have the most mathematics, physics and chemistry knowledge stored in their minds in their lives.

On top of the bed......

While teasing his son and Xincheng, Li Chong recalled that this seemed to have done countless chemistry problems.

Li Chong vaguely remembers that there was an experiment, as if there was some salt bridge in the middle, and four sticks were inserted in the water, and then a battery could be formed.

It's just that......

He had forgotten exactly what solution was used.

But......

That's all there is to it.

For example, copper sulphate and the like.

Of course!

Li Chong also knows that it should not be possible to make a good battery based on this alone, because normal people know that most of the batteries used in later generations are lithium batteries.

But this did not prevent Li Chongxian from experimenting.

Speaking of which......

This ammeter should not be made first.

Yuan Heng six years.

Li Chong looks old and strong here, but Li Chunfeng feels a little bad on his side.

But it doesn't seem to be a choice.

After all......

Li Chunfeng was on duty every day, and he couldn't wait to devote his whole body and mind to scientific research.

Looking back at Li Chong, Li Chong felt bored after he was comfortable, so he thought about it.

The result......

When Li Chong wanted to hand over the task of making voltmeters and ammeters to the other party, the other party's son said that his Aye's physical condition was a little bad recently.

Li Chong can only be a person

Bring gifts for condolences.

Another day, let Sun Simiao go back to Chang'an again.

All I can say is......

This Li Chunfeng shouldn't have left earlier than himself, right?

"How old are you, Aye?"

Then Li Chunfeng's son replied, "It should be almost sixty-six this year."

When Li Chong heard this, he was also embarrassed.

It's all old.