I saw a group of Donghu generals dressed in gorgeous costumes and surrounded by countless Donghu cavalry guards with better equipment.

was gathered around King Donghu, and asked with his mouth open.

"King, how do we deal with the Qin people?"

"King, where did we come from to enter the Qin Dynasty?"

"Your Majesty, are you talking?"

"Where do we fight from?"

"Do you need to inform your warriors that you need to make some preparations?"

This series of inquiries gave King Donghu a little headache, and he said to the generals next to him.

"The Qin people are cunning, the reason why the Huns were defeated at the beginning was because the Qin people investigated the direction in which the Huns came, and then arranged an ambush in advance, so that the Huns were finally defeated."

"We Donghu people will never be able to follow in the footsteps of the Huns, so don't ask again, if someone dares to come over and annoy me, I will kill him directly!"

King Donghu may have been impatient with the noise, and suddenly pulled out a scimitar from his waist to intimidate the Donghu generals who were turning.

For a while, everyone no longer dared to make a sound.

However, they were curious.

But it still exists.

And when the Donghu people are thinking about how to do it.

A few days later.

It is located outside Kamiya-gun, north of the later capital city.

Win Changsheng appeared here.

At this moment, the Great Qin army along the Great Wall has all begun martial law.

And at the same time.

Hundreds of telescopes and hot air balloons were also distributed to all the soldiers.

Han Xin, Xiang Yu's two generals.

At this moment, he was standing on Ying Changsheng's side, accompanying him, inspecting these Great Qin's Xiongguan fortresses, as well as the elite and abnormal Qin soldiers in the grassland.

At the same time, along the Great Wall, every few tens of miles, there will be a hot air balloon, rising into the sky, carrying Qin soldiers holding binoculars, driving the hot air balloon, deep into the grassland for more than ten miles, or even dozens of miles, and then reconnoitring around.

This way of high-altitude reconnaissance.

It's much better than sending cavalry scouts to reconnoitre.

The reason is simple.

No matter how awesome the scouts are, how far can they reconnoitre?

And, if you send out scouts.

What should you do if you encounter the cavalry of the Donghu people?

A small number of scouts, I'm afraid they can't get rid of the cavalry of the Donghu people, right?

At that time, it will not be possible to accurately deliver the message back.

And with a hot air balloon, it couldn't be more suitable.

This thing flies in the sky.

Even if the Donghu people saw it.

What can they do?

Could it be that they can still face the sky and wave their fists?

In that case, what can it be used for?

At the same time, when the Daqin hot air balloon took off into the air.

King Donghu finally determined his target.

That is, Yuyang-gun, which is located in the east of Sangya-gun.

This is a very important place.

This place.

If once captured by the Huns.

Well, the consequences are obvious.

It is the cavalry of the Donghu people.

It can go directly and penetrate into the territory of North China.

Into the plains.

Then, successfully, plundered in China.

At that time, Great Qin is bound to suffer heavy losses.

At this moment, I saw that the king of Donghu was standing in front of all the 150,000 Donghu cavalry.

Then, shouting at them.

"Warriors of Donghu, our next target is Yuyang County, now we are three hundred miles away from Yuyang County, we want to go straight to Yuyang County, and then, enter the Qin State, and then plunder!"

"Kill, kill, kill!"

"Go and rob the Qin people's goods and women!"

"Haha, my scimitar is already hungry!"

In an instant, the air resounded with the beastly roar of the Donghu people.

Subsequently, with the order of King Donghu.

All the Donghu cavalry.

They all rolled over and climbed onto the horseback.

Immediately, they began to head towards Yuyang County.

And when the Hun cavalry rolled in.

Win Changsheng didn't know this, and right now, he was receiving information from Yuyang County.

And, send commands to it.

Yuyang County is about three or five hundred miles away from Shanggu County, where Win Changsheng is currently located.

At this moment, after Ying Changsheng came over, he considered that at the moment, the speed of Daqin's information transmission was too slow - the beacon tower could only transmit that kind of simple information, and a slightly more complicated interest could not be transmitted, which was really not good in Ying Changsheng's opinion.

And with eight hundred miles expedited.

It's too slow.

Therefore, after the invention of the telescope, he made a new set of information transmission methods for Daqin.

This way, in fact, is also very simple.

It is nothing more than building high platforms in various places, and then on them, several soldiers are set up, among them, there is a flag soldier, and then, after receiving the message, through the flag, an order is given.

Then, through a telescope in the distance, the command given by the flag is observed, and then the flag is passed on to the next location, which is actually similar to the beacon.

Ying Changsheng didn't even build it in particular, and directly used the original beacon tower as a watchtower for transmitting information at the moment.

And this speed of delivery.

It's also similar to a beacon.

But.

Compared to being able to just smoke a cigarette.

Or a fire.

Provide an early warning beacon in terms of the beacon.

This thing, however, can convey a specific message correctly.

The size and number of the enemies to be committed, as well as where they will be attacked, are clearly informed.

Therefore, the current Win Changsheng has planned to use this method to replace the current news transmission on the front line of the Great Wall in Daqin.

In the future, the entire Daqin will also be implemented.

At this moment, when the test is over.

Ying Changsheng is very satisfied.

This is a new way of delivering information.

After Wang Jian on the side saw it, he couldn't help but say in surprise.

"This kind of flag language is not a special thing, but there was no telescope before, so it didn't come in handy, but now with this telescope, it's different, even if it's far away, you can use the telescope to spy on the situation in the distance......"

"yes!"

Ying Changsheng nodded, but Wang Jian on the side smiled bitterly.

"It's just that the cost of this clairvoyant mirror is too expensive, and you need to use crystal, and you can make it after patient polishing, which is really a bit expensive......

"Well, I can't help it!"

Win Changsheng laughed dryly.

Because he didn't master how to make glass.

Therefore, the current Win Changsheng can only use transparent crystal, which can also replace glass.

And crystal wants to replace glass, but in vain it increases the cost of polishing.

After all, glass is made into the desired shape.

Crystal, on the other hand, needs to be polished, so the cost will be very high......