Throughout the eight years of Yuan Heng, Li Chong immersed himself in the study of chemistry.

With sulfuric acid and hydrochloric acid, he can make potassium sulfate, potassium chloride.

Although Li Chong has little experience in chemical synthetic fertilizers, there is still a voice telling him.

This potassium sulfate and potassium chloride may be used as potassium fertilizers.

The main thing is that they are all easily soluble in water.

The solution can then contain a large amount of potassium ions.

This is definitely beneficial for the absorption of plants.

"Horse, there's someone outside asking to see you."

"Who is it?"

"It's Li Xuandelang."

"Let him wait in the main hall."

"Whoa."

Then Li Chong also cleaned up, helped her son cover the quilt, and helped her cover her exposed white arms.

In the winter, you will catch a cold later, but it will be troublesome.

And the son has obviously just exercised, and at this time, he may still be sweating a little.

Seeing that Li Chong covered her with a quilt, she also continued to sleep with peace of mind.

Left the son-in-law.

When I arrived at the main hall, I was about to find a place to sit down and talk slowly.

I saw that Li Xuandelang, who was said by the slave, was anxiously turning around and saluting him.

"Master Li!"

"No need to be polite, Li Yan, why did you suddenly come here today, sit?"

"Father, father, he ......"

Saying that, the other party almost cried.

It is said that men don't flick when they have tears, but I don't know why, Li Chong feels that it seems that people in the Tang Dynasty seem to like to express their inner feelings.

】

Li Yan, that is, Li Chunfeng's eldest son, was also serving in Si Tianjian at this time because of Li Chunfeng's nepotism.

As soon as Li Chong heard what the other party said, he realized the seriousness of the problem.

"What happened to your father?"

"My father died suddenly in his mansion in Chang'an three days ago."

Li Zhong heard this.

Although he had felt this way for a long time, it was still a little fast.

"What do you mean by sudden?"

Li Zhong asked him.

At last......

After the description of the other party, it can basically be ruled out that he kills.

And......

Before he died, there was no special circumstance, that is, as usual, in the middle of the night, he also wrote something that might be used to get the content of the next issue of the Science Newspaper, but the next day, when everyone couldn't see each other, he was wondering why the owner of the house didn't seem to wake up as early as usual, but when he pushed the door in, he found that the whole person was cold in bed.

This......

In fact, Li Chong had long felt that Li Chunfeng might be about to die.

It's just that I didn't expect to die so suddenly.

"Let's go! Back to Chang'an! ”

After a noon examination, no poisoning or other signs were found.

It should have died suddenly.

Since no cause has been found, it can only be regarded as the end of life.

A person was fine, the day before he was still preparing for the Science Newspaper, and then the next morning, he was found dead.

And looking at the appearance of death, the face is still very peaceful, that should be in the process of sleeping no one.

All I can say is......

That's not a bad thing.

Of course!

Just in case, Li Chong still looked at what Li Chunfeng was studying recently.

Or maybe you've been in contact with anyone.

In the end, it turned out that it was quite normal.

Then he can only accept the death report of the noon.

This is considered a natural death.

"Condolences."

Li Zhong patted Li Yan on the shoulder.

Over the years, Li Chunfeng has indeed been a little too tired and thinks about more things, unlike him, he mainly spends more time happy and relaxed.

But sixty-eight is not a 'young death'.

It should be said that it belongs to a relatively normal age.

It's because this death is a little too sudden, so that people can't accept it.

Also, before you die, you can't write a last word or something.

After dealing with the funeral, Li Chong returned to Luoyang.

Li Chengqian also learned about this, and finally, in order to commend Li Chunfeng's contribution to science and his conscientious dedication to the Tang Dynasty, he also asked Li Chunfeng to give him another additional official.

Although this person is dead, it seems useless to give the other party an official at this time.

But......

This will certainly be of some benefit to future generations.

At least......

When the time comes, you can say what my ancestors used to be.

Then when others hear it, they will think that your family background seems to be okay.

Li Er is here......

After coming back.

Li Chong also said with emotion: "This is too sudden, I don't know if you and I will be like this when the time comes?" ”

"But if that's the case, then it's probably good."

"After all...... It's better than being tormented by illness and dying. ”

After that, Li Chong met Sun Simiao again.

I can only say that Lao Sun, you are not reliable.

Sun Simiao said: "I'm not really a living immortal, and a person's lifespan can only go there, and there is no way to do it." ”

"People like Li Chunfeng, who study day and night, forget to sleep and eat in order to seek the avenue, can live to be sixty-eight years old, which is actually considered a long life."

After Li Zhong finished listening, he couldn't help but nod.

replied: "Sometimes, he just works too hard and doesn't know how to combine work and rest, unlike me." ”

Sun Simiao looked at him with disdain.

Then he said, "You should also pay more attention to your body, and don't worry about sex all day." ”

Li Chong said to him: "It is said that men look at beautiful women every day, so that they can live longer." Isn't it for the sake of living longer? ”

Sun Simiao couldn't help but be a little serious by him, and said, "Is this true?" Have you ever experimented? ”

Li Chong: "No, it's based on personal habits and experience. ”

Sun Simiao also said: "However, in this ancient book, there is indeed a saying that men and women can cultivate both and can prolong their lives. ”

Sun Simiao looked at Li Chong and seriously suspected that Li Chong must know something.

Even though......

For this method, Sun Simiao can't help but say, he has a wait-and-see opinion.

Of course! Even so, he didn't envy Li Chong at all. After all, he is now much longer than Lee.

He had suffered several strokes and was paralyzed several times, and each time he was on the verge of death, but he couldn't die.

Let his disciples decoct themselves with medicine, and every time they can cure themselves in a few months or so on.

Sun Simiao suddenly said: "You must also take good care of your body in the future." ”

Li Chong was silent.

But this Li Chunfeng has passed away, next, who will take over the Academy of Sciences?

This is also a problem.

In the end......

I guess I will follow the inheritance of the son from the father.

Sure enough!

Next, Li Chengqian appointed Li Yan as vice president of the Academy of Sciences, which made Li Yan feel uneasy.

It's not that Aya died in this position, so he is uneasy.

It's that he knows that he is too far away from his own Aye.

This is not!

Subsequently......

It is convenient to come to Lee for important support.

Li Chong can only let the other party relax, if you don't know how to study, then you can just do administrative things.

There are a lot of people who can do research.