Even though the Russian army in the Far East had temporarily ceased war with Japan, the two sides licked each other's wounds. But the Mongols are directly separated from the Japanese, who cannot be measured by the mentality of ordinary people, and no one knows if they will do anything crazy. Wan has been moving this stumbling block in front of the Japanese by himself, so if something happens in the future, it will be too late for the direct family to cry.

Therefore, Wu Peifu thought that it was better to keep the main force of these Mongolian armies, after all, the Chechen department threw an olive branch to Jixian as soon as it captured Kulun, which was much better than those Mongolian nobles who enclosed land and stood on their own. Although the direct family chose the king later, so that Timur and they threw themselves into the arms of the Feng family, the two families did not have any deep hatred. Wan has always left this elite Mongolian army in North China, so who will continue to squat there in the future when Soviet Russia or Japan invades Mongolia in large numbers?

In fact, there were quite a few troops in Jixian County, but in order to maintain stability in North China, the manpower was extremely scattered, and when the Mongols were good at mobile warfare on a large scale, the manpower was insufficient. Not even the remnants of the Feng army, which continued to make waves at Shanhaiguan, could not hold it down, let alone draw troops to deal with the Mongols, who were good at long-distance guerrilla warfare.

And what worries Wu Peifu even more is that Timur's marching speed, you must know that there are also people in the direct army in the Feng army, when the Feng army ordered Timur to march and they marched, Wu Peifu also knew, so he calculated the usual time, let Weiss and them take Chengde first, and wait until the Mongolian cavalry who were not good at attacking the city arrived, then there was only one way out for the city.

If the Mongolian cavalry was in the era of Genghis Khan, the siege was also very powerful, then Wu Peifu would also be a little afraid, but the understanding of the Mongols was still in the late Qing Dynasty Wu Peifu, how did he not expect Timur to be so fast, and the siege was also very fast, without using any siege weapons, just relying on the "people's heart" to take this northern fortified city.

While Wu Peifu was busy stabilizing the battle in the north and Shanhaiguan, the Mongol army rushed to the Zhifeng battlefield faster than everyone expected, causing the Zhifeng battlefield to be uncertain. Although this variable was still small, and the Mongol army also occupied the territory of the Feng army, Timur originally talked to Zhang Huzi about handing over Rehe to the Mongol army as a deep place for the Mongol army to fight with Soviet Russia. However, for the intervention of the Mongols, Wu Peifu, who was worried that the Mongol army would not know what to do and continue to attack, still managed to make preparations.

When he went to defense, at this time he remembered his fierce general Kou Yingjie.

Kou Yingjie was originally the commander of the Second Division of the Hubei Army, and in 1918, the first war broke out between the warlords of Hunan and Hubei, and Kou Yingjie led his troops to participate in the operation against the Hunan Army. Because of the commander of the Second Division of the Hubei Army, Wang Jinjing? Corrupt and incompetent, as a result of which he suffered defeat in the war. However, Wang Jinjing put all the responsibility for defeating the battle on Kou Yingjie. Hubei Overseer Wang Zhanyuan? Listening to Wang Jinjing's words, he had to kill Kou Yingjie to discipline the army. Kou Yingjie, who is quite popular, has received help from many people, and in the end, this matter is not over. From then on, Kou Yingjie began to move closer to the direct warlord Wu Peifu, and later simply took refuge in Wu Peifu. Soon, he was promoted by Wu Peifu to the commander of the Second Mixed Brigade.

In July 1921, war broke out again between the warlords of Hunan and Hubei. Wu Peifu sent Xiao Yaonan and Jin Yunju to enter Hubei to seize territory in the name of aiding Hubei. Kou Yingjie also led his troops to participate in the battle, but lost the battle. In August, Wang Zhanyuan was forced to resign as overseer of Hubei. Wu Peifu personally went to Hubei to supervise the battle, and finally drove the Hunan army back to Hunan. After the end of the war, Wu Peifu promoted the generals who participated in the war. Although Kou Yingjie lost the war, he was still promoted to division commander. It can be seen that Wu Peifu attaches great importance to Kou Yingjie.

This time, Wu Peifu pushed Kou Yingjie to Miyun again, intending to resist the offensive of the Mongol army. However, it is difficult for a good woman to cook without rice. Even if Wu Peifu handed over the 50,000 troops gathered from around Jixian County to Kou Yingjie to command, the direct army at this time was much weaker than at the beginning of the war, including the reason that there was no rest for several days of fighting, and there were also reasons why a large number of prisoners were filled into the army, but in general, in terms of numbers, it was much stronger than Wu Peifu's difficult moment for Zhang Huzi, but the opponent at this time made Kou Yingjie feel uneasy.

Although Wu Peifu didn't point it out, Kou Yingjie also knew that this Mongolian army couldn't fight if it hurt, and it didn't hurt if it didn't hurt, and it was very difficult to grasp this scale.

"The Mongols have divided their forces into two routes, the main force is from Chengde, no more than twenty or thirty thousand, of which they also have nearly ten thousand infantry, according to the scouts, these infantry are estimated to be composed of our surrendered Mongol team and Feng army. The other way was along the Great Wall and went straight to the west, and their horses were too fast for our men to keep up, but this detachment was only about 2,000 men. ”

Hearing his adjutant's report, the apprehension in Kou Yingjie's heart suddenly calmed down, and he thought disapplausively,

"If the Mongol army breaks away from these infantry directly, then it is really two questions whether their own troops will be able to build their fortifications in Miyun when they rush to Miyun, and now that the Mongols have been held back by these infantry, the time for advancing has greatly extended the time to build fortifications, and then how much threat can these surrendered and defeated troops pose to our strong fortifications? The Mongol army defeated the Russians on the Krulun River, and it was a matter of time and numbers, and the command level of these Mongol generals was also limited. ”

The generals in the direct army did not have a direct understanding of the combat effectiveness of the military units in the camp, but only assessed them on the basis of the reports of the late Qing Dynasty and the previous battles with the Russians.

In the late Qing Dynasty, there was a famous Mongolian prince, named Seng Greenqin, the 26th grandson of the second brother of Genghis Khan, the 26th grandson of Habtu Hasar, who had fought with the British and French forces in the Second Opium War, died, and the Qing court lost the strength of the Manchurian and Mongolian Eight Banners, and then the Mongolian cavalry almost withdrew from the history of the late Qing Dynasty.

Although the Mongol army fought bravely, after the advent of modern weapons such as rifles, it relied on a large number of casualties. Although there are many elite veterans in the Soviet Russians' invasion of Mongolia, their tactical level and weapon level have been hovering at the second- or third-rate level, and some weapons are even before World War I, which is not comparable with the Soviet and Russian armies in Europe. None of the exploits gained by these men were enough to highlight the true level of the Mongols' combat effectiveness. In the Chinese army, many battles were fought with more and less, and Kou Yingjie, who had an army of 50,000 at hand, attributed these Mongol cavalry, which had lost their tactical suddenness, to mediocre troops. For guarding Miyun this time, Kou Yingjie was determined.

Like most Han Chinese who did not know the situation, he recognized the superior fighting power of the Mongol army in some of the battles it had fought against Soviet Russia and hostile forces. But they think that it is only a minority, and the Mongol army has thousands of soldiers, and there are always some special cases among these people.

And there is also the fact that the astronomical amount of food and grass consumed by the more than 20,000 Mongol troops every day is enough to give any rich region a headache, let alone a poor region like Mongolia. However, the grain of Rehe was used by Zhang Huzi to supply the main army, and if the food left in the city was supplied to 20,000 infantry, it was good to say that it could last for a month, but if it was used to supply the Mongolian cavalry with many war horses, then it was estimated that it could only last for four or five days.

In Mongolia, which is the territory of China, of course, the Chinese people themselves know how many people can be fed on this land, and they can't believe that those foreign forces are living Lei Feng, even if someone in Mongolia digs a big gold mine, the weapons purchased by equipping 20,000 Mongolian cavalry are enough to drain the funds of the Mongolian Chechen Department, after all, the Chechen Department is only a Mongolian tribe, and it is no wonder that those treacherous foreign arms dealers are not hollowed out!

Even though there was a lot of information about the strong firepower of the Mongol army, as well as the relevant information collected by various powers in Mongolia, Kou Yingjie was always skeptical. These gringos always exaggerate in order to get everyone to buy more arms, and they also desperately sell second-hand or even third-hand goods at higher prices under the banner of an arms embargo. Therefore, Kou Yingjie remained skeptical about the true combat effectiveness of these Mongol armies, which were armed with external munitions. "Lack of food and guns! Perhaps a little stronger than the original Mongol cavalry, but the strength was limited. ”

With the judgment in his heart as the benchmark, Kou Yingjie began to discuss the military route with his subordinates.

"This westward Mongol army once defeated a Russian infantry division at the Krulun River, but considering that the main focus of the Russians was in Europe, it was second- or even third-rate troops that remained in the Far East. Then the combat effectiveness of this Mongol army, which was defeated by several times the strength of Soviet Russia, is also questionable. This is not just Kou Yingjie's idea, many of his subordinates also have this idea.

It was precisely because he felt that the Mongol cavalry dragged down by the infantry was not a big threat, so Wu Peifu focused on the intention of fighting with Zhang Huzi at Shanhaiguan. In Xie decided that Shanxi Yan Xishan enthusiastically wanted to help. Relying on the background of the direct army, he pulled those prisoners of the Feng army and attacked Shanhaiguan together.

Not to mention that Wu Peifu chased Zhang Huzi fiercely, and defeated the strong enemy Feng Department near Jixian County, which greatly boosted the morale of the direct army, although Kou Yingjie was still a little jealous of the Mongolian cavalry in his heart, but the low-level officers and soldiers of the direct army had a feeling of the Mongolian army, which was a local chicken and a dog, and it was crushed with one blow!

In fact, for the arrival of the Mongol army, the Russians also approached Wu Peifu and were willing to provide weapons and intelligence help.

However, out of wariness of the Russians reaching out too long, the top of Jixian County still chose to cooperate with the British and Americans.

However, in the twenties, when nationalism was on the rise, the Chinese top brass was not very enthusiastic about these foreign armies against their own armies, after all, the Manchu Qing Dynasty was more comfortable with using foreign troops to suppress the domestic people.