At the beginning, it was the king of Persia who colluded with the Great Xia rebels, and the Great Xia was forced to fight back, and the old Persian king was a war criminal and was not qualified to be the king, so the Great Xia supported the new king.

and made Persia a vassal state of Bactria .

Although Persia needed to pay tribute every year, through trade, Persia obtained a large number of daily necessities. Ice cubes in summer and mutton shabu in winter are all benefits obtained due to becoming a subject country of Great Xia.

The Persian opponents of Bactria lacked the backbone and only shouted in their respective towns, without making much of a splash.

With Chen Mu's vigorous publicity, there are more and more voices supporting Daxia, and the territory of Persia has become nearly stable.

The original king of Persia was hidden in a village by Xiqiang, and was later searched out by the Great Xia army and killed on the spot.

In twenty days, Chen Mu had already controlled the entire territory of Persia, including the western part of Persia. Later, Chen Mu helped the king of New Persia to establish an army, and chose people close to Bactria .

The matter was not over here, Chen Mu set out from western Persia to attack Xiqiang.

The population of Xiqiang is not large, and it is mainly based on grazing, supplemented by fishing and breeding. Scattered along the coast and steppes.

Their main army, the 5,000 light cavalry, had all died in Persia. Chen Mu's soldiers pressed the realm, pushed it over in a carpet style, and easily solved Xiqiang.

From then on, Xiqiang also became a vassal state of Bactria and signed the Rakshasa Treaty.

It's far away from Bactria here, so let Persia take care of it more.

When the class teacher returned to the court, Chen Mu thought of another question.

What if the subject countries of Bactria secretly exported strategic materials to their neighbors who were further away?

Such as stirrups, saddles, grain and grass, and so on.

If Xiqiang is not a vassal country, but wants to import goods from Persia, Bactria has a way to stop it.

But other countries, such as the Rakshasa and the Xiongnu, did not have a strong control over Bactria and what if they imported Bactria products and sold them to neighboring countries further away?

For example, stirrups, saddles, and horses are also available in the Xiongnu, but not in Xiqiang, because Xiqiang and the Xiongnu do not border, and there are plateaus and deserts in the middle.

If Xiqiang had these things again, it might cause even greater casualties to Great Xia.

If the country west of the Xiongnu had these things and used them to invade the Xiongnu, it would be much more difficult for Daxia to help the Xiongnu.

How can this be avoided?

It is useless to restrict trade, people just need to steal the technology and they can produce it themselves.

The best way is to continue to improve the combat effectiveness of Great Xia.

However, with the current metal smelting and forging technology, guns and cannons cannot be made at all.

What to do?

Chen Mu thought all the way and returned to the territory of Great Xia. As soon as he arrived in Wen'an County, on the border, someone asked to see Chen Mu, saying that there was an urgent report from the national capital, and it had been two days.

When Chen Mu opened the letter, he frowned.

The Yintang organization gave him a big surprise, and took advantage of his expedition to Persia to launch a rebellion in the northeast.

When the emergency report was issued, Beibing County had already been occupied.

Beibing County is the northernmost county seat in Northeast China. Now the Northeast region has just been developed, and there are only three county seats, from north to south, Beibing County, Beilin County, and Beihai County.

Since there is now a galloping road in the country of Great Xia, fast horses can continue to run. Coupled with the post station system, the emergency can change horses and messengers all the way, day and night, from Beibing County to the national capital, it will arrive in five days.

Counting the two days from the national capital to Wen'an County, it means that the Yin Tang Organization had already occupied Beibing County seven days ago.

It may now have taken control of the entire three northeastern counties.

Although it is said that there are 5,000 cavalry and tens of thousands of militia in the northeast, the Yin Tang organization has infiltrated the government of the three northeastern counties and launched a rebellion through rebellion.

So Chen Mu had to plan for the worst.

Two days ago, Chen Xingtian had sent the general Li Feng to lead 10,000 cavalry to quell the rebellion.

Li Feng once fought against Donghu with Chen Mu, and was familiar with the terrain over there.

But 10,000 cavalry is probably not enough, if the rebels do not defend the city, the cavalry will not have any advantage, at most to prevent the rebels from continuing to expand.

Now Chen Mu is still needed to support, but Chen Mu can no longer take the long-fought army to help, and the soldiers need to rest.

And if you go to the Tohoku region with a baggage, the speed is too slow.

According to the speed of the carriage, it will take at least a month to walk from the gallop road.

The current territory of Great Xia is too large, and there is no problem with the Chidao being used for general transportation, but the transfer of troops is still too slow.

Weapons problems, transportation problems, all urgently need to improve technology again.

If there were a train, it would only take a few days to reach the northeast from the western border of Bactria.

If you want a train, you need a steam engine.

Chen Mu and the students of the College of Engineering have studied the steam engine, but Chen Mu only knows the principle, but does not know the specific structure, so he has not studied it.

However, the School of Engineering has already established this topic, and I believe that with the wisdom of Daxia craftsmen and the guidance of Chen Mu, it is only a matter of time before it is developed.

But that's for the future, and now the expedient measure can only be light.

Chen Mu arranged it and asked Zhang Zhong to return to the capital with a large army, and then he took a hundred guards and took a carriage to Qingqu County, the easternmost county seat in the Dongyuan region.

After arriving in Qingqu County, Chen Mu sent his own soldiers with handwritten letters to the Dongyue region to transfer 5,000 elite soldiers, and then Chen Mu came to the county government to inquire about the current situation.

County order: "Back to His Royal Highness the Prince, the rebels have occupied the three northeastern counties, and now General Li Feng leads 10,000 cavalry to patrol between Beihai County and Qingqu County, and the rebels cannot hold out." ”

Chen Mu nodded, the rebels had indeed occupied the three northeastern counties, but they didn't know what the current strength was.

The county magistrate said: "There is a man who calls himself Mai Wei, who said that there is important news for His Royal Highness the Prince, and the lower official has sent someone to invite him, and he will arrive soon." ”

Chen Mu's eyes lit up, this Maiwei must have brought back intelligence from the Northeast region, this is priceless.

As he was talking, a person came in from outside the door, and when he saw Chen Muna, he bowed.

After answering the code, Chen Mu asked him about the situation in the northeast region.

Maiwei: "There are a thousand gangs of rebels, all of whom are members of the Yin Tang organization, and they are the core force of the rebels, and many of them know martial arts. ”

"There is also an army composed of private soldiers of the twenty major families, with 10,000 people, and its combat effectiveness is similar to that of the militia."

"There are also 3,000 militiamen and 1,000 cavalry who have rebelled, a total of 15,000 people."

"In addition, there are still people in the city, and there were no casualties in the rebellion, and now they may be rebelled by the Yin Tang organization."