"Fourth brother, don't sigh, two thousand Hu cavalry captains are enough to stop the Huns!" Wei Qing thought that Yan Ming sighed because there were too few soldiers.

Yan Ming shook his head and said, "Third brother, I'm not worried about this. What's more, there are two teams of men and horses led by Li Guang and Cheng Buzhi and our horns to support, no problem. ”

"Although Xihe County and Yanmen County are inherited from the horns in the clouds, there is still a distance after all. In the war with the Huns, we still have to rely on ourselves. Wei Qing said.

Yan Ming nodded: "Don't be in a hurry to go to Yunzhong, the third brother will hand over to Han Yan first." During this time, all people were equipped with military crossbows. At the same time, it will run in with the original Hu Cavalry Captain Army. ”

Wei Qing nodded, although this time he led the Hu Cavalry Captain Army as a general of Xiaocai, he also understood that the real master would be Yan Ming.

Although Yan Ming does not have any explicit seals, judging from the dispatch of the emperor and the empress dowager, everything revolves around Yan Ming's construction of Yunzhong.

And Liu Che also made it clear before that when you arrive at the border pass, Yan Ming's password shall prevail.

On the side of Hongyantang, Yan Ming has already sorted out all the books. But he didn't show it to any of the teachers.

There are some things, Yan Ming still wants to teach the children by himself. It's not that they can't trust these teachers, but they don't have the educational environment of later generations, and some things are not suitable for them to do.

The people who came and went in Maolingyi had already moved under Yan Ming's mobilization.

Yanmen County has become the rear of Yunzhong County.

Wu Laosi and Lao Xu have already gone first. The troops led by Cheng Buzhi and Li Guang were also stationed in Yanmen County and Xihe County respectively.

Feeling the spring breeze pavement, Yan Ming finally knew that his trip to the border was getting closer and closer.

Tian Xi's belly is getting bigger and bigger, and I'm afraid the due date is just a few days.

Seeing Tian Xi's bulging belly, which was a circle bigger than Yanran's at that time, Yan Ming always had the illusion that Tian Xi's stomach would burst.

It was this delusion that gave him an inspiration.

Balls, iron balls. A bold idea rose in Yan Ming's heart.

The large amount of sulfur and saltpeter in the eastern valley finally came to great use in Yan Ming's heart. Yan Ming decided to test his idea with some black powder that he had refined first.

Elder Chen has been here these days.

Yan Ming asked Da Lao Chen to cast a hollow iron ball with a sandwich according to the drawings he provided. And let him put pieces of broken iron in the mezzanine.

The scraps of iron that have been forged are so sharp that they can scratch your fingers if you are not careful.

When Elder Chen brought the prepared iron ball to Yan Ming, Yan Ming's eyes lit up.

Elder Chen smashed his mouth, wanting to ask what this iron ball was for, but he didn't ask. He knew that the things Yan Ming made were extremely exquisite. The drawings of the steam engine that were given to him before, he didn't understand what it was for a long time. Nowadays, many people are still trying to make parts for steam engines.

It's just that the parts require too much precision, and the construction progress is extremely slow.

got the iron ball, Yan Ming was not in a hurry to equip this iron ball. He began to ask Old Man Lu to build a small catapult.

This kind of simple catapult is extremely simple for the carpenter of Old Man Lu. It took only two days to build.

Yan Ming checked the catapult, which was extremely strong.

"Mr. Lu, how many times can this car be used?" Yan Ming asked.

Old man Lu confidently patted the catapult and said, "This catapult built by the old man will not be loose if it is thrown hundreds of times in a row. As long as you maintain and lubricate it for many years, it will be no problem! ”

Yan Ming believed in Old Man Lu. The old gentleman never deliberately exaggerated.

He found a stone of about the size and weight of the iron ball.

After loading the stone onto the catapult and tightening the winch, Yan Ming personally shot the catapult.

"Bang!" The catapult burst out with a muffled sound, and under the powerful force of the lever, the stone was like a cannonball, drawing a graceful arc in mid-air, and smashed directly more than a hundred meters away, with a loud bang, and the ground was dusty.

"Heh, this is so powerful!" Chengxin clapped his hands and said: "When you get to the border pass, there is this kind of thing, and it must be much easier to defend the city." ”

Yan Ming also nodded, and Old Man Lu also looked proud, and said: "Master Hou wants to go to the border gate, how many catapults like this need to be built, you can say a word." ”

"I only need one now, and if I can, I want the old man and me to go to the border city. You don't have to work, you can dictate what others do. Yan Ming added.

After all, Old Man Lu is not young, and he can't afford to toss like this.

How do you know that Old Man Lu is not worried about his body at all, but said: "If the old man's craftsmanship can help Yan Hou, it would be great." When to leave, Yan Hou called the old man. ”

Yan Ming hugged his fists, bowed deeply to Old Man Lu, and said: "Yan Ming first replaces the people of the border pass, the people of the Han Dynasty, thank you, old man." ”

Old man Lu laughed and said, "Don't come to this set with the old man, oops, I'm not upset." As he spoke, he turned his face away.

On that day, Yan Ming took the iron ball and returned to his small room. There was gunpowder he had made.

It was dipped in grease with fine paper and dried, and the gunpowder was wrapped into a lead.

Finally, the lead was placed in the iron ball, and only then the gunpowder was carefully placed in the iron ball. He carefully put a layer, slowly compacted it with a mallet, and then loaded it into a layer little by little, and compacted it again.

The whole process was carried out very carefully by Yan Ming.

Finally filled an iron ball, Yan Ming's face and body were wet with sweat.

Holding this iron ball, Yan Ming's eyes lit up. Once the experiment of this thing is successful, Yan Ming will have eighty percent certainty that during the construction period, Yunzhong County will be held.

Of course, Yan Ming didn't want to use gunpowder in war too early.

Gunpowder is a monster. Once released, it will run rampant.

Therefore, even if it is a large amount of mining, Yan Ming does not plan to let more people know about it.

Holding the improvised bomb he had made, Yan Ming wanted to test its power.

There is a large testing ground at the back of Hongyan Hall.

After letting Yan San put in some chickens, ducks, sheep and cows, Yan Ming suddenly thought of Li Shaojun, who was still being detained in Hongyan Hall.

"Put on heavy armor for Li Shaojun, and put it in the group of chickens, ducks, cattle and sheep." Yan Ming paid attention, if Li Shaojun passed this catastrophe, he would let this Li Shaojun go.

Yan San didn't understand what Yan Ming was going to do, but he never questioned Yan Ming's decision.

Old man Lu's catapult is ready.

Only Wei Qing and Han Yan were present. Except for the two of them, Yan Ming didn't call anyone.