The scientific researchers of the Arab Empire were in contact with computers for the first time. Knowledge of computers, almost zero.

They don't even know anything about programming batch software, let alone programming.

It's basically impossible for them to compile the software themselves.

Not to mention them, I'm afraid that except for the group of computer creators in Huaxia City, no one else has that ability.

Even the Datang Scientific Research Department is a little short of talent.

As for them going to the Datang Scientific Research Department, or the Huaxia City Scientific Research Department to steal these software, it is almost impossible.

After several days of experimentation, the scientists of the Arab Empire did not find a solution to the problem.

They know so little about computers that they can't make a major breakthrough in a short period of time.

At this point, they are completely dead.

Faced with this situation, the kings of the Arab empire had to accept this reality.

This is very bad news for them.

The technological gap between them and Datang is already huge.

And now, after Datang has a computer, the scientific research gap between the two sides will be further widened.

I'm afraid that in a few years, their national strength will be completely crushed.

At this point, the kings of the Arab Empire felt more and more that the best time to deal with the Tang Dynasty was in front of them.

And we can't wait any longer, we have to do it now.

Now is probably the time when the gap between the national strength of the two sides is the smallest, and they don't have any capital to continue waiting.

And since they are ready to make a move against Datang, they must gather their strongest strength.

Before Datang could react, give Datang a head-on blow.

Next, the king of the Arab Empire, secretly gathered an army of 500,000 and displayed it on the border between the Arab Empire and the Tang Empire.

And this time, the king of the Arab Empire is ready to appoint the veterans Khalid, Ibn and Velid.

Khalid, Ibn and Willid, but veterans of the Arab Empire, fought in the north and south, only had one defeat in his life, and made great achievements.

In the original historical trajectory, this veteran, many years ago, had died.

And in this life, Khalid lived a few more years.

Until now, although he is old, he is still not old.

Of course, Khalid's defeat was actually a defeat at the hands of the Tang Shu King.

This time, when the king of the Arab Empire first approached Khalid, Khalid refused.

"King, the Tang Dynasty is too powerful. Although after years of development. But now our military strength is not as good as that of the Tang Dynasty fifteen years ago. And after fifteen years of development, what is the current strength of Datang? ”

"Fighting against Datang, the odds of us being able to win are too small. And if we fail, it will bring us a potentially devastating blow. ”

Over the past decade or so, the combat effectiveness of the Arab imperial army has been constantly increasing.

But to this day, Khalid feels that the combat effectiveness of their army is not as strong as that of the Tang army fifteen years ago.

The gap between the two sides is so big, so how can it be fought?

Hearing Khalid's analysis, the king of the Arab Empire was silent at first, and then said helplessly: "General Khalid, if there is a choice, this king does not want to go to war with the Tang Dynasty!" ”

"But now, Datang has established a huge force in the west of our country. Now, I, the Arab Empire, have been surrounded by their new forces and the Tang Dynasty. ”

"Now, their new power has not yet taken shape. At present, Datang is cleaning up their domestic family forces. This is the time when their national power is at its weakest. ”

"If you wait until their new power is completely formed, wait until the Tang Dynasty will completely solve the family. When the time comes, will they let us go? ”

"Definitely not! We are attacking Datang now, and there is still a glimmer of life. However, if you sit back and watch them develop and grow, there is only one way to die! ”

After listening to the king's analysis, Khalid couldn't help but let out a long sigh.

"The king, the old minister can only guarantee that the old minister will do everything in his power. But as for the result, Lao Chen really can't guarantee it. ”

The king stood up and gave Khalid a deep bow: "Old general, I will leave all this to you." ”

Khalid did not return the salute, but said categorically: "Only with this body, can I repay Jun's grace." ”

On the second day, Khalid was the commander and led an army of 600,000 to launch a surprise attack on the Tang Dynasty.

The first thing they attacked was the Persian administrative region of the Tang Dynasty.

This region was originally a country.

was destroyed by the Great Food Empire, and then attacked the Tang Dynasty.

Then they were counterattacked by the Tang Shu King, not only retreated in embarrassment, but even the Persia they had just taken was lost.

And this region of Persia was also included in the territory of the Tang Dynasty and became the Persian county of the Tang Dynasty.

This time, since he has made a move on Datang, Khalid is ready to take more areas before Datang has time to react.

At the very least, it is necessary to pocket the Persia and Anxi capitals.

Don't look at Khalid when he faced the king, he said that the Tang Dynasty was invincible in the world, and their Arab Empire basically had no chance of winning.

In fact, in Khalid's heart, he was not convinced by the Tang Dynasty.

This was the only failure in his life, and the worst defeat.

In his heart, he has tried to find his way back to the field countless times.

This time, the opportunity has arrived.

This is probably his only chance.

If you don't succeed, you will be a benevolent!

The army of 600,000 was divided into three routes by Khalid.

The first 300,000 troops were all killed by the Persian army of the Tang Dynasty.

For Persian County, Khalid was a must-have.

The other two roads, all of which attacked the Rest of the Metropolitan Protectorate.

For Persian County, Khalid was inevitable.

Therefore, this road was personally commanded by Khalid.

These three armies are basically carried out simultaneously.

The action on the part of the Persian County was only slightly advanced.

As for the military operation against Persian County, Khalid did not take the form of a strong attack.

Persian County adhered to the heroic and open atmosphere of the Tang Dynasty, and the border trade was completely open.

Therefore, the other small towns of Persian County were ignored.

Instead, he led a large army and went straight to the city of Persia.

For Khalid, the most defended place in the entire Persian county was Persian City.

As long as you can take Persian City, other small cities will naturally be no problem.

His army marched fast, so fast that the people of the small county towns might be able to spot their army, but there was absolutely no time to raise the alarm.

Khalid knew very well that there was no beacon fire here in Persian County.

Delivering messages can only be done by people.

Khalid was confident enough to do so, so that they could not get their message across.

Khalid led the cavalry, galloping, all the way, in just half a day, came to the Persian city ten miles away.

Arriving here, Khalid ordered his men to vanguard, disguised as merchants, to infiltrate the city of Persia and take the opportunity to take the city's defenses.

However, when his 500 pioneers disguised themselves as merchants and came to the city of Persia, they were stunned to find that the gates of the city were closed and they were waiting for it.

After the vanguard sent the news back to Khalid, Khalid was all blinded.

No, it shouldn't.

Especially after Khalid went to the city to watch Datang's defense, his heart was even more strange.

Because, Khalid is sure that the secrecy of their attack is very good.

It is absolutely impossible for Datang to know in advance.

And they rushed all the way to the city of Persia, and the speed was unparalleled.

Datang is convenient, even if you want to report the news, it is too late in time.

However, through the observation just now, Khalid was surprised to discover.

The defensive situation in Persian City was definitely not improvised.

Instead, I have been preparing for at least half a day.

That is, at least from the moment they first entered the Persian county, they began to prepare.

But how is this possible?

Unless, they have other ways to deliver the message.

What kind of communication methods do they use?

Khalid was puzzled.

Well, in Datang, there have been telephones for a long time.

But the phone has been circulating only at the top level.

As a remote area in the Western Regions, it is difficult to set up a signal for a while.

Until the last year or two, it has just been laid, mainly for military use.

Khalid, on the other hand, did not know that there was already a telephone in Persian County.

Even, because Khalid has been fighting in the south and the north, it is estimated that he will not even know what the phone call is, so naturally he can't guess how Datang delivered the news.

What he didn't know was that when their army had just entered Persian County, the county seat of Persian County had already passed on the news by telephone.

Not only was Persian City prepared early, but at this time, even Tang Emperor Li Ke in Chang'an City knew the news.

In addition, Tang Emperor Li Ke also communicated with the ministers in a timely manner.

Timely countermeasures were put in place, and different orders and instructions were issued to the major counties throughout the Persian county.

At this time, Datang was rapidly mobilizing a large army and preparing to rush to the aid of Persian County and the Great Anxi Protectorate.

At this time, Khalid was still surprised why Persian County had reacted so quickly.

He never thought that in fact, Datang's reaction was faster, and even reinforcements had been sent out at this time.

……

Since the city of Persia had been on guard for a long time, their surprise attack was pointless.

Khalid ordered the city of Persia to be besieged.

On the one hand, the troops were divided into multiple routes to besiege and attack other small towns in Persian County.

The whole city of Persia, they were bound to take it in one fell swoop.

The entire Persian Prefecture, as well as the Great Rest Protectorate, will become their stronghold for attacking the Tang Dynasty.

At worst, they can still defend it tightly.

What they fought was such a time difference.

The rest of the small counties will naturally not let go.

And their Arab empire, fighting in the north and south, has always been very cruel to those prisoners.

Their purpose is to plunder.

Not only would the captives be massacred, but their culture would be destroyed.

They fought all the way to the north and south, and they didn't know how many civilizations they destroyed.

But this time, in the war with the Tang Dynasty.

Khalid didn't want to kill more.

Because this time, Khalid really wasn't sure if they would be able to achieve the ultimate victory.

And if they fail, he fears that the Tang Dynasty will carry out a retaliatory massacre against them.

So, even if it is to disperse and besiege those small county towns.

Khalid also ordered the soldiers to strictly prohibit the massacre of the surrendered troops.

At the same time, Khalid believes that it must be a very difficult battle.

Because, the combat effectiveness of the Tang Army, which he has seen with his own eyes, is very strong.

However, the development of events greatly exceeded Khalid's expectations.

The other small counties of the entire county of Persia, they did not meet the slightest decent resistance.

Everywhere their armies went, all the small county towns, all surrendered.

Occupying most of the cities of Persia except for Persian City, they did not even cut a single knife or shoot an arrow.

This made the army of the Arab Empire, which was full of strength, feel like a punch to the cotton, and there was nowhere to use it.

Datang's surrender was too easy and freehand.

And after surrendering, fully cooperate, let what you do.

And they, again, were ordered not to slaughter the surrendered army.

Therefore, after a war, there were no casualties on both sides.

Even their commander-in-chief, Khaled, was very surprised when he got the news.

How could the Tang Army be so weak?

How could it be so easy to lose resistance?

Is this still the Tang Army in his imagination?

Tang Jun, has he lost his sharpness?

Not the courage of the past?

However, Khalid always felt that something was wrong.

Since the Tang army is so cowardly, then, presumably, this Persian city will not be an exception.

The city of Persia is very tall and tall, if it is stormed.

Although he brought many horses with him, he was afraid that it would be difficult to attack them for a while.

It would be best if the people of Persia would surrender as well.

Next, Khalid shot the letter of surrender into the city with arrows.

However, like a mud cow entering the sea, there is no news.

Finally, Khalid sent men to persuade him to surrender in front of the city.

Unexpectedly, the defenders on the city wall used strong bows to shoot the soldiers who persuaded them to surrender to death.

This greatly annoyed Khalid.

I didn't expect the defenders of Persian City to be so ignorant of current affairs.

Next, Khalid gave the order to siege the city.

Although Khalid led an army of 300,000 on this road alone.

But Persian City, after all, is only so big.

The army of 300,000 cannot be displayed at all.

The number of people besieging the city can accommodate up to 100,000 people to besiege the city.

At first, Khalid was only tentatively attacking.

But what he didn't expect was that the counterattack of the defenders of Persian City was so decisive and sharp.

The first round of tentative attacks ended in total annihilation.

The sharpness of the Tang Dynasty's bows and arrows, the solidity of the walls of the Persian city, and the skillful coordination of the defenders were all unexpected by Khaled.