It's still summer, and it's very likely that the Wuhuan people will go south to loot in the fall, especially if there are no these moths to sell supplies to them, the Wuhuan people will be even more sad.

There are three reasons why nomads like to go south to raid in autumn, first, nomads are cold and not heat-tolerant, and the climate in Guannai is relatively warm, and nomads are not adaptable. Autumn is crisp and cool, which is just right for nomadic activities. As the weather became colder and colder, the nomadic cavalry became more and more energetic, and the more they fought, the more advantageous they became, and the Central Plains army was not cold-tolerant, and the more they fought, the more they suffered. In addition, autumn battles are likely to drag on until winter, and the freezing of rivers in winter will save nomadic cavalry the trouble of crossing the river, so nomads often choose to invade the border in autumn.

Second, the nomadic people are backward in production and lack of materials, and there is often a shortage of materials in winter. Autumn is the season of grain harvest in the Central Plains, and the Central Plains will reserve materials for wintering, so it is very conducive to their robbery. Nomads aim for food and wealth, and they often grab it and leave, running back to live in a tent for a comfortable winter. If they can't grab anything, many herders will not survive the winter if they catch the snowstorm. It's all for coming out to beg for food, it's not easy for anyone, and there is no way for nomads to come out and grab it.

Thirdly, autumn is the slack season of the year for the nomads, they have nothing to do, which is very convenient for the assembly of the army, as long as the tribal leader gives an order, they can gather thousands of troops and horses, and they can enter the Central Plains at any time. Autumn is the season of harvest in the Central Plains, the common people are busy harvesting grain, and many soldiers and young people will also return to their hometowns to collect grain, so the Central Plains Dynasty has no extra energy to manage the nomads, so it gives the nomads an opportunity.

But the Central Plains Dynasty has no way, the nomadic cavalry is mobile, they are impermanent, the reason why the Han Dynasty can press the Huns on the ground and rub it is also the cavalry, the scale of the cavalry is small is to send food, must be a large-scale attack, but there are too few large-scale cavalry in the Central Plains, to the Song Dynasty directly even the place to raise horses is gone, the last time the Yongle Emperor swept the north is not even an enemy, just like taking the army to the grassland to travel around.

Although Youbeiping County is very poor, it is also a border county in the north, and in history, Liaodong, Liaoxi and Youbeiping have been eaten by the Wuhuan people, which shows that the Wuhuan people have ambitions, at least they definitely have ideas about Youbeiping, if Yao Jie does not arrive, I am afraid that it will not be long before Youbeiping will be annexed by the Wuhuan people as in history.

There are not too many Wuhuan people who go south to plunder a poor place like Youbeiping, but it must be cavalry, although there are tens of thousands of war horses under Yao Jie's command, how many real cavalry are only the hundreds of people brought out from Luoyang, and the rest are also classified as cavalry, but at best they are only infantry on horseback, before the appearance of the high bridge saddle and stirrups, cavalry training takes a long time, although Yao Jie knows what these two things look like, but he has not had time to build them.

"Starting tomorrow, all troops will start large-scale training to prepare for the battle with the Wuhuan people in the autumn." Yao Jie said to all the military horses.

"Before, we were just conducting adaptive training, and from tomorrow, we will train in strict accordance with the training standards of this general, and in three months, we will see an army of steel." Yao Jie said loudly.

Speaking of steel, Yao Jie remembered that most of the steel at this time was made by frying steel or 100 steel, and the steel filling method did not appear until the Northern and Southern Dynasties.

The method of frying steel is the middle and late Western Han Dynasty, the emergence of frying steel to promote the development of 100 steelmaking technology, people use frying steel as raw materials, after repeated heating, folding, forging into very good quality steel. However, there are still certain defects in the technology of frying steel and 100 steelmaking, such as the process of frying steel is complex and not easy to master; 100 steelmaking is labor-intensive and time-consuming.

Until the emergence of the steel filling method, the quality and output of steel have been greatly improved, Yao Jie, who had studied machining before, happened to understand the steel filling method, so he decided to find an opportunity to get the steel filling method out.

Ancient Chinese iron-making was later than that of the West, but this does not mean that China's iron-making technology was inferior.

On the contrary, because most of China's iron ore is poor iron ore, if you want to make iron, you need more advanced smelting technology, on the other hand, because there are a lot of rich iron ores in the West, so iron tools appeared relatively early.

After the order went down, all the soldiers complained, but it was useless, Yao Jie appointed hundreds of veterans as instructors and was specifically responsible for training, resulting in these recruits not even having the opportunity to be lazy, otherwise these iron-faced and selfless instructors would not be polite to him.

Watching the army start to train in full swing, Yao Jie thought: "The amount of training has increased, and the soldiers must be supplemented with more nutrition, and now that there is a lack of meat in the army, it seems that it is time to make some deals with the Wuhuan people." ”

The next day, Yao Jie looked for Wu Ye, the new commander of Tuyin County, and said, "You have been in Youbeiping for so long before, and you also have a certain understanding of the Wuhuan people?" ”

Wu Ye couldn't help but sweat profusely, he was a small official in Tuyin County before, Yao Jie killed so many people, even if the original officials were swept away, and Wu Ye did a good job before, and he was the one who chose the tallest among the shorts.

"Xia Guan hasn't communicated with the Wuhuan people over the years, and he has only heard about some things." Wu Ye said.

"This official wants to buy some horses and sheep from the Wuhuan people, and is going to let you communicate with the Wuhuan people."

"Xia Guan must do his best, but the war horse may be a little troublesome, and the Wuhuan people generally don't sell the war horse." Wu Ye said.

"It's okay, it's mainly cattle and sheep, and it depends on the situation if it's a war horse."

These war horses in Yao Jie's hands are enough to form a cavalry of 7,000 people, Yao Jie's demand for war horses is not so urgent in a short time, but the army urgently needs cattle and sheep to supplement nutrition, as for the ancient times are not allowed to eat cattle, Yao Jie said that with such a little population and land in Beiping, even if the cattle are pulled to the farmland, it is better than nothing, it is better to use it to eat meat, anyway, the Wuhuan people are not short of these things.