In order to deal with the unknown situation, Chen Mu also brought 300 supply vehicles.

A total of 700 steam tracked trucks, heading west.

After crossing the battlefield a few days ago, the army continued to move forward, and soon found an iron mine, Chen Mu checked it casually, and left.

Further on, another military factory was found, which contained a lot of equipment for the manufacture of cannons.

Chen Mu checked it and found that they were all rough smelting devices, casting devices, and gunpowder processing devices, which seemed to have been built in a hurry by the Cheng family here.

Although these things could not be taken away, Chen Mu also knew that this was the forefront of the Cheng family, and the Yisi people were originally uninhabited here.

So Chen Mu continued to lead the troops to explore.

Along the way, Chen Mu saw several village ruins, and things were emptied. It seems that the Isis were originally inhabited by tribes, but were converted into centralized dwellings by the Cheng family.

This suggests that they may have a second iron ore mine and factory.

However, Chen Mu was not worried, because he knew how big this desert was, and according to this population density, there were enough camel cavalry annihilated a few days ago. It should be the vast majority of the soldiers under the Cheng family.

Even if the Cheng family can build more guns and cannons, it will be in vain if there are no soldiers to use them.

Now Chen Mu needs to be careful of landmines.

Although I don't know if the Cheng family has this technology, it's right to be careful. Now that there are no metal detectors, you have to disperse the formation to avoid heavy damage.

Chen Mu led his troops all the way to the west, and according to the map in his impression, he found the seaside. Here, sure enough, a city was found.

This city also looks like it was built by a family, and it has a strong Bactrian style. After the previous lessons, this time the Cheng family built the city wall very high, and put cannons on it, which could increase the firing range.

Chen Mu observed from a distance for a while, made notes with pen and paper, and then led the troops back to the city.

Such a city must not be easily captured, and you need to be prepared.

Chen Mu returned to the fortress halfway through, and a soldier came to report.

"His Royal Highness the Prince, General Li Feng has a letter to submit."

"Oh? Li Feng's letter? Grab it! ”

Chen Mu took the letter and read it again, flicked the letter paper with his hand, and said with a smile: "Okay! Li Feng has made a great contribution. ”

The letter said that Li Feng crossed the desert with a small number of people carrying a large amount of grain and grass, and then also established a fortress on the plain.

Li Feng sent cavalry to explore the terrain to the west, and found a large area of black soil, and it was cultivated by people.

He tried to get in touch with the local residents, and found that the language here was actually the same as that of the Xiongnu, and the interpreter Urila was able to communicate with the local residents in a simple way, and obtained a lot of information.

Judging from the local development conditions, it is still in the situation of scattered tribes, and it can become a subject state of Great Xia.

That's great news.

Chen Mu knew in his previous life that black soil was equal to a big granary, and in this era, the status of grain was even more important.

Accepting the benefits of the Northeast region, Chen Mu has fully experienced it, and now that he has turned this black land in the west into a subject country, the food of Daxia will be endless.

Chen Mu immediately revised a book, reminding Li Feng of all kinds of precautions, as well as some work that should be done in the future. Then, let him step up patrols to prevent the Cheng family from escaping there.

Then Chen Mu wrote another handwritten edict, asking people to return to China to allocate materials and reinforcements and prepare for the expedition.

He was now thousands of miles away from the Great Xia border, and with the steam tracked car, it only took a month to make a round trip.

That's the benefit of technology.

Chen Mu trained in the fortress on the way, and exchanged letters with Li Feng, and a month later, the domestic supplies arrived. Chen Mu led the army and came to the seaside new city again.

This time, Chen Mu brought 3,000 musketeers, 800 artillerymen, and all the light artillery, a total of 200. In addition, there are 5,000 Wudang Flying Army and 300 supply vehicles.

A total of 1,300 steam tracked vehicles.

This is already the strongest expeditionary force lineup that Great Xia can come up with at the moment, but it is worth it in order to eliminate this particular enemy.

The Cheng family saw Chen Mu's army, but they were not prepared to fight at all, and the last explosion had already scared them.

Now what they rely on is the newly built tall city wall, and with the same cannons, they could only fight one mile in Shacheng at the beginning, but now they can fight more than one mile.

They have tested it, and it is similar to Chen Mu's cannon, and it can be used in a battle.

Coupled with the fact that Chen Mu came from the original road, the supply line was too long, and the Cheng family believed that this battle would definitely be won.

Chen Mu doesn't care what the situation of the Cheng family is now, anyway, the cannon is in hand, and I have it in the world.

After adjusting the formation, Chen Mu ordered the cannon to aim above the city wall and fire.

Under the surprised gaze of the Cheng family, the cannonball flew high, cut a beautiful arc, and fell above the city wall.

Then it exploded.

Fragments of metal scattered across the sky, and the defenders on the walls were killed and wounded.

Cheng Tang was about to collapse, "How is this possible?" Why can their cannons hit so far? ”

Cheng Wu: "Ah! This is the curve of the bow and arrow! We also raise the barrel of the gun! Fast! ”

He was right. Chen Mu just used a small trick to change direct fire to curved fire, which increased the range of the cannon. You can bomb the city two miles away.

Cheng Wu now asked the soldiers to adjust the angle of the cannon, it was too late.

The 200 cannons of the Great Xia Army bombarded in turn, and shrapnel was always flying on the city, and the soldiers under the Cheng family were killed as soon as they stood next to the cannons, and before they could adjust the cannons.

When Cheng Tang saw this scene, he had completely given up.

"Run! This battle can't be fought! ”

Cheng Wu looked dazed, "Run?" Where are you going? We've traveled thousands of miles, so does it make sense to run like this? ”

Cheng Tang said anxiously: "Someone will come to arrest us, as long as we live." ”

Cheng Wu's eyes suddenly lit up, "That's right! Come on! ”

As soon as the Cheng family ran away like this, the Yisi people couldn't stand it even more, and the Great Xia army soon opened the city gate.

Chen Mu asked the musketeers to guard outside the city to prevent the Cheng family from escaping, and then he led the Wudang Flying Army into the city.

After a while, Chen Mu found the palace built by the Cheng family, and when he went in, the three members of the Cheng family were waiting for him in the palace.

Cheng Tang sat on the throne, barely carrying a little dignity of the head of the family, and Cheng Wu and Cheng Lu stood beside him dejectedly, very worried about their fate.

Chen Mu smiled slightly, "How good are you living a small life in the Snow Mountain?" Why do you want to plot against Great Xia? Your little insect carving skills are really nothing. ”