"The attack on Xiliang is much simpler. What I am afraid of is that it is just a bait from Beidi." Zhao Xu frowned.

Although Beidi was Dasong's mortal enemy, he had to admit that Beidi's operation was very smart.

This is simply the same routine as the contemporary United States inciting small countries to provoke big countries and fight agent wars.

Now Xiliang has successfully angered Da Song, and his father and the civil and military officials of the court have unanimously decided to send troops.

The northwest of Dasong will undoubtedly become a meat grinder between the Three Kingdoms.

After all, as long as Dasong starts war with Xiliang, the people of Beidi will definitely end.

"It's just that the emperor made up his mind that even if Beidi participated, this war would probably be inevitable." Chang Wei frowned and then stretched out again, "But fortunately we don't need to send troops this time."

Liu Fu nodded, and was also secretly happy.

Now he and Chang Wei only want to guard the four counties of this acre of three-point land.

I don't want to care about the others.

Chang Wei continued: "But the Northern Di is currently planning to build a fire. Even during the Northern Expedition, we must be careful that the Black Iron King's Tent has been restless."

Zhao Xu deeply agrees.

"It seems that they are very confident in their bronze cannons." Zhao Xu sneered.

Tsui Hark told him about Beidi asking for Xiliang bronze ware.

He thought for a moment and guessed that the bronze cannon was built by Beidi.

If the missionary in the country of Ross only knew this kind of artillery, he would be at ease.

Because compared with iron cannons, bronze cannons have a very low technical content, relying on the ductility of bronze materials.

The iron cannons and steel cannons test their steel smelting ability.

This is the foundation of industry.

At the same time, the disadvantages of bronze cannons are significant.

One is very expensive.

Dasong belongs to the poor copper country, and copper is rare, which will seriously limit the number of artillery built by Beidi.

Secondly, bronze transfers heat quickly and cannot achieve rapid fire like a wrought iron cannon.

In this way, you will not be able to gain any advantage when fighting.

It cannot be produced in large quantities and has a slow firing rate, so these two points are compared by his artillery.

What's more, his artillery has been cut and its range is even higher than before.

"Hmph, the artillery soldiers of the royal family will teach them how to be human." Chang Wei raised his eyebrows.

"Since that's the case, we can follow the emperor's orders and guard our northern four counties." Zhao Xu said.

Thinking of something, he asked again: "How is the bayonet equipment of the flintlock rifle?"

"Eighty percent of the soldiers' equipment, 20% can end." When it comes to this, Chang Wei was excited.

In this way, the advantages of the flintlock will be fully utilized in the war.

Zhao Xu showed a satisfied look.

The bayonet is still very simple to make. After all, with the hydraulic forging hammer, it is very simple to train weapons.

He explained Chang Wei.

Zhao Xu said to Liu Fu again: "The development and construction of Yanzhou cannot be stopped, you must continue to keep watching."

"Yes, Your Highness." Liu Fu replied yes.

After ordering the two to go back, Zhao Xu continued to write his own "Naval Training Manual".

At this time, Wang Ying suddenly ran in in a hurry, his face pale.

Feng'er followed Wang Ying panting and scolded: "Master Wang, how can you break into the palace alone?"

The servant said that Wang Ying rushed in without waiting for the notice.

Wang Ying looked like he was about to cry.

He first apologized to Feng'er, and then said, "Your Highness, something happened to Wang Chong."

"What's wrong?" Zhao Xu asked. When he saw that Wang Ying was in a wrong state, he immediately felt sank.

"Wang Chong, he flew away." Wang Ying stammered.

Feng'er laughed out loud, "Master Wang, are you just making fun of it, can Wang Chong fly?"

Wang Ying took Zhao Xu with a bitter face and walked out, "Your Highness, if you don't lie to you, you're in the sky!"

Zhao Xu was pulled outside by Wang Ying and looked up along his hand, and was immediately scared and sweated.

At this moment, a huge spherical object was floating in the sky, as if flames were burning.

There are still people vaguely visible above.

This thing is nothing else, but it is a hot air balloon.

He would pick up the telescope in the study and look up. It was indeed Wang Chong standing on it.

At this moment, Wang Chong seemed to be very panicked, and kept shouting something on the hot air balloon.

But because the distance is too far, they can't hear it at all.

At this moment, the servants of the Wangfu informed that students from the Science and Technology Academy were asked for a visit accompanied by the guards.

He immediately ordered the students to come in.

"What the hell is going on!" Zhao Xu got angry at the students for the first time.

The three students all shook their heads, and one of them said, "Your Highness has valued Qu Sheng and others in chemistry for a while, and neglected us and those who are good at physics. Wang Chong asked me and the three of us, saying that we would create something amazing and surprise your Highness."

The student on the left added, "Your Highness said that the air will rise when heated, which is the principle of hot air balloons. He also drew the structure of hot air balloons on the textbook, so Wang Chong decided to create the hot air balloons."

"We cannot leave the school without authorization, but Wang Chong is an official in the Military Affairs Office and can enter and exit freely. He asked someone to sew a hot air balloon balloon. Today, Japan came to test it secretly. Unexpectedly, the hot air balloon flew away if the rope was not fixed." The student on the right shook his head.

"You guys are too brave." Zhao Xu pointed at the three students and raised his hand to beat them. The three of them shrank their heads in fear.

However, he still stopped his hand, and he could not curb this kind of lifeless technical exploration.

Otherwise, it will be difficult for real talents to appear in the North Four counties.

But in this way, it is really unknown whether Wang Chong can still live.

"Go to chase with me." He immediately asked someone to prepare a horse and chase Wang Chong's hot air balloon.

The earliest record of hot air balloons in contemporary times was in 1782, that is, the eighteenth century.

At that time, the hot air balloon was sewn with numbness and paper.

The fuel is straw and wool. When flying, there were cages hanging below, stuffing chickens, ducks and sheep into it.

The balloon flew to a height of 450 meters and floated in the air for eight minutes.

The French King Louis XVI at that time visited the performance.

According to the students, Wang Chong's fuel is also a straw mixed with lamp oil, so it should not fly far.

Now I just hope this hot air balloon can land smoothly.
Chapter completed!