After the excitement, Cao Cao was a little disappointed and regretful.

Originally, he occupied such a large territory south of the Yellow River, but in order to divide Lu Bu's strength, he gave it all to Lu Bu.

As a result, Lu Bu's strength was not weakened, but became stronger and stronger.

And now he only has Jizhou, if there is no saltpeter and sulfur, then he will not be depressed to go home.

Cao Cao took a deep breath, but fortunately, it was not too late. As long as he makes gunpowder and then builds cannons, he can compete with Lu Bu.

High-end craftsmen have indeed been poached by Lu Bu, but Wenchen and military generals are still the most under his command.

In comparison, the Lu Bu Group is somewhat weak.

Cao Cao believed that as long as he did not lose in force, he still had a chance to defeat Lu Bu.

At the same time, Xuzhou airship technology has reached a new level.

The first 30-meter-long airship has finally been built, which is much more luxurious than the previous simplified version.

All kinds of safety performance have been greatly improved.

After the test flight, there were no problems at all.

With a budget, it is enough to replenish fuel and food sources for a month, without landing. If you stay in the air slowly, the flight time can be greatly extended.

The speed of the airship can reach a maximum speed of 20 kilometers per hour, although it is not comparable to the speed of horses and steamers, but it is flying in the air, and there is no obstacle at all.

In other words, such an airship is enough to fly around the entire Dahan.

Well, such airships are already capable of meeting the current military needs.

Lu Bu decided that the task of the first airship was to draw a map of the Great Han.

You know, the current map is too backward and too backward.

Lu Bu doesn't say anything about Baidu maps, but you don't even want to draw accurate and detailed pictures of peaks and rivers.

Only by having a detailed and accurate map can you get twice the result with half the effort when you march and fight in the future.

And the first target is Jizhou, and then Youzhou.

After you have finished mapping the north, go to the map of the south.

The terrain in the south is complex, Yangzhou is watery, and Bashu is mountainous.

If you don't have a higher military power, it's definitely self-inflicted to go on a conquest now.

All the important ministers understood Lu Bu's military plan, and naturally knew what to do.

A month later, Cao Cao's Ministry of Military Industry opened a gong to celebrate.

Because of black powder, it was finally researched.

Next, as long as he collected a large amount of saltpeter and brimstone, he could also make gunpowder and cannons.

The principle Cao Cao's people in the Ministry of Military Industry have already figured it out, it's very simple, it's the same as an artillery battle.

Although these people don't know much about physical chemistry, as long as they test more, fools can also know how to operate!

There is a precedent of Lu Bu in the past, and you can also study seven seven or eight if you draw a gourd in the same way.

Cao Cao rewarded the Ministry of Military Industry and issued an order that within three months, the cannon must be studied.

Hearing this order, the faces of all the people who had just been rewarded turned green.

You know, just researching gunpowder took them a lot of effort and time.

If they really want to build a cannon comparable to Lu Bu, within three months, they really don't have much confidence!

But there is no way, the big guy spoke, if they don't want to do everything they can to complete it, their heads will not be protected.

was assured by everyone that Cao Cao was in a good mood.

However, at this time, a piece of news surprised Cao Cao again.

"Gongda, what are you talking about, what kind of strange bird?"

Xun You also said helplessly: "You don't know very well, but I heard that some people saw a big bird flying in the sky." ”

"Big bird, how big?" Cao Cao disagreed.

However, Xun You was speechless and didn't know how to say it at all.

If it were in the afterlife, everyone would definitely shout UFOs, aliens!

However, in this life, Xun Yu is completely indescribable. Besides, he also heard it, and Yagen didn't quite understand what the people were saying.

Xun You had to say: "You don't know, but many people have seen it, saying that the big bird is very huge." Everyone is full of money, and I believe that this matter must not seem to be a fraud. ”

Cao Cao shook his head: "It's just that the people are rare and weird, what is so strange, this must be a rumor." Well, now that we have gunpowder, we are no longer afraid of Lu Bu. Gather all the ministers, and the prime minister will discuss the plan to conquer the secluded. ”

"No!"

Similarly, in Koto. Sun Quan threatened to increase the money, and finally bought a Xuzhou worker and got an excavator.

Sun Quan has long collected top talents from all walks of life in Jiangdong, and let everyone go to study excavators.

A group of Jiangdong craftsmen have praised the magic of the axe, and they are extremely obsessed with this excavator.

It took more than half a month for everyone to finally understand the general principle of the excavator.

In this way, I was finally able to report the first phase of work to Sun Quan.

"Lord Hou, I have already understood the principle of the excavator. Its main kinetic energy is the steam engine, which is like the lid of a pot used to cook rice, which uses hot air to lift the lid of the pot. ……”

In order to make Sun Quan understand, the craftsman tried his best to use his imagination and eloquence, and explained various images.

And after listening to the craftsman's report, Sun Quan was also overjoyed.

It turns out that it's such a simple truth, this girl is not difficult, look, he understands everything.

So.

"Hahahaha, it's that simple! Okay, great, then Ben Hou will give you half a year, and after half a year, Ben Hou will see the steam engine and excavator made by Jiangdong himself! ”

What the!

"Half ...... Half! The leading craftsman trembled with fright and broke out in a cold sweat.

Seeing this, Sun Quan's eyebrows couldn't help frowning: "What's the matter, there's a problem?" ”

"This ...... In ......the end, the craftsman still had the courage to say: "Hui Hou Ye, although the principle is simple, it is not easy to make steam engines and excavators. Even if we wait to make it with all our might, I'm afraid it will be...... I'm afraid it will take ten years. ”

"What, ten years!" Sun Quan was instantly furious: "It can only be made in ten years, so what do you want to do." Ten years, hum, ten years later, Lu Bu has gone to heaven, you tell Ben Hou ten years! ……”

Sun Quan shouted angrily and was so angry.

Damn, it took ten years to build a steam engine, how could he catch up with Lu Bu. There are ready-made samples for you to refer to, and you even say that it will take ten years. A bunch of idiots, it's useless.

Of course, Sun Quan said that Lu Bu went to heaven, and that was an adjective. But Sun Quan didn't know that Lu Bu had already gone to heaven now.

In the end, seeing that all the craftsmen were trembling, Sun Quan, who was furious, gave the final order.

That is two years, and within two years, he must see the steam engine and excavator that belong to Jiangdong.

At this moment, all the craftsmen are complaining.

In fact, almost everyone knows, let alone ten years, if there is no one to guide them, they will almost never be able to build it.

Not to mention those round steel pillars and all kinds of irregular devices. Even if it's a small screw, they don't know how to get it!

It looks simple, and the conditions of Jiangdong can really not do it!

If Lu Bu was here, he would definitely laugh.

The excavator is quite simple, if you give Koto a radio transmitter.

Don't talk about demolition, even if you decompose, you will never want to build it.

The knowledge reserve determines the upper limit.

The days passed smoothly, and it was almost winter, but Lu Bu once again ushered in a major event in his life.