Black Wind Village, although it was originally a den of thieves, but now it has long become a paradise.

Even Zhao Hui, every time he returns here, he always feels extremely peaceful in his heart.

It was peaceful, the men were ploughing and the women were weaving, and there were no quarrels.

Compared with Zhao Hui, he comes once or twice a year, and Zhang Xue has not come back since he left.

There are a lot fewer people in Black Wind Village than at the beginning, but nothing has changed.

Everything was a familiar feeling to her.

His son Zhao Lang came for the first time, and his dark eyes looked around, looking very curious.

He still doesn't cry or make trouble, and looks very well-behaved.

Although the wheat fields around Heifeng Village have not yet been harvested, Zhao Hui can already see at a glance that this year's output will be much higher than last year.

There is a sign on the side of the land around Heifeng Village, marking what fertilizer is used.

How much yield will be increased will need to wait for the harvest before weighing can be calculated.

With the results this year, it can be promoted next year.

But next year, it will be difficult to fully roll it out in several states.

At this time, Zhao Hui discussed with them in Guo Jia and what method to use to promote.

After all, it is a new fertilizer, and the people who don't know it must have no bottom in their hearts.

If the new fertilizer doesn't work, and the yield is reduced, the whole family will not survive.

On the first day of returning to Heifeng Village, Zhao Hui looked at various fields, and then went to the deeper Yellow Turban Village the next day.

The road to the Yellow Turban Village is very steep, and it is difficult for even mountain people to climb up.

But there are already cable cars to ride. Zhao Hui didn't have to climb the mountain himself.

Shen Kui and the others have been waiting for a long time.

Although Zhao Hui doesn't have much to teach them now.

But in their hearts, Zhao Hui is still the omnipotent teacher.

During this time, they came up with soap, perfume and other things, all of which brought huge benefits to Zhao Hui.

"Teacher."

Shen Kui took a group of juniors, and when he saw Zhao Hui appear, he immediately shouted respectfully.

No matter what Zhao Hui's identity is outside, he will always be their teacher.

Shen Kui's group of people has no desire for fame and fortune, and they are immersed in scientific research.

They like to develop things one by one, and they like to use these things to help Zhao Hui and the people, so that their lives are getting better and better.

"Teacher, I have a question."

"Teacher, I also have a question for you."

A group of people surrounded Zhao Hui in the middle.

They have too many questions and want to ask Zhao Hui for advice.

Even if they already knew that Zhao Hui would not give them direct answers now, as long as Zhao Hui pointed them in a direction, it would save them a lot of time.

As long as they continue to study in the direction indicated by Zhao Hui, they do not have to worry about making mistakes, and success is a matter of time.

If they missed this time, they didn't know how long Zhao Hui would have to wait for the next time.

However, compared with the excited senior brothers and sisters, there are some newcomers who have only recently been admitted to the Yellow Turban Village, but they don't understand why the senior brothers and sisters are so excited.

But at this time, no one explained to them. Peerless Tang Gate fo

Even if it's not their own problem, they can benefit a lot from listening to Zhao Hui's answers for others.

Listening to the questions of Shen Kui and others, Zhao Hui felt that he really couldn't come in the future.

There are many problems that he has not been able to figure out by himself, he can only make suggestions, and Zhao Hui himself cannot completely guarantee it now, his suggestions must be right.

The scientific research ability of Shen Kui and others is now much more powerful than Zhao Hui.

Let Zhao Hui research and invent these things, Zhao Hui can't get them himself.

This time, it was not easy for Zhao Hui to deal with Shen Kui and the others.

Faced with their questions, Zhao Hui couldn't give an answer for a long time.

Zhao Hui and Shen Kui came to the room, and the others dispersed.

The person who got Zhao Hui's answer went to his laboratory to study it excitedly.

Those who have just come here have finally had the opportunity to ask their seniors.

Zhao Hui came this time, in addition to taking a look at the fields around Heifeng Village, there was another very important reason.

In the battle with Cao Cao, even if Zhao Hui had a great advantage, after the first battle, not only did he consume a huge amount, but also many soldiers died in the battle.

As a result, Cao Cao still ran away.

Now there are Liu Bei, Sun Ce, and Lu Bu.

If Zhao Hui wanted to wipe out these princes, he might have to pay the lives of hundreds of thousands of soldiers.

This time, Zhao Hui came to the Yellow Turban Village, and more importantly, he wanted to see what step Shen Kui had reached in the development of gunpowder.

The development of gunpowder is inevitable, although the lethality is huge, it will bring countless wars, and they will be even more tragic.

But if they don't develop gunpowder because of this, and wait for others to develop it, they will only be beaten.

You can't be afraid of the dangers of gunpowder and put it on the shelf.

And gunpowder can't just be used to make a scene, it must be made the people of the Han Dynasty understand the powerful power of gunpowder.

Since Shen Kui got out the glass and telescopes, Zhao Hui asked him to specialize in the development of gunpowder.

As for soap, perfume or anything, Shen Kui didn't participate.

"Teacher, this is my latest gunpowder formula, I just tested it a few days ago, but the power still can't meet the teacher's requirements."

The development of gunpowder is very dangerous.

Even though Shen Kui only used a small amount every time he experimented, he was injured several times.

On a few occasions, if the dose had been a little bigger, he might have died outright.

The gunpowder that Shen Kui is developing now is mainly black powder with a ratio of saltpeter, sulfur and charcoal.

In order to increase his power, Shen Kui also added other things. Things like arsenic, lead and mercury.

He can now develop explosive gunpowder, but it is very unstable, and it is not mature to be used on the battlefield.

Maybe you didn't even hit the enemy, but you killed your own people first.

Zhao Hui and Shen Kui spent an afternoon discussing in the room.

Shen Kui's records for nearly half a year were all taken out for Zhao Hui to watch.

His records are very detailed, and the ratio of saltpeter and sulfur used in each test is recorded, as well as the power of the explosion.

However, the power of the explosion, Shen Kui couldn't directly calculate, he just marked the power of the first explosion with a number ten.

Then, the explosion power of the other tests is based on the explosion power of the first one, and the number is increased or decreased to compare the explosion power of each formula.

Zhao Hui saw from the information given by Shen Kui that there was a set of proportional explosion power, and Shen Kui marked twenty, which was the most powerful explosion in Shen Kui's test in the past six months.

Zhao Hui asked Shen Kui to re-match it, and he planned to see the power of Shen Kui's gunpowder with his own eyes.