Although the cavalry has extremely high mobility, and even the peak of the cavalry, the Mongol cavalry, it is undeniable that the tight and disciplined infantry formations, especially the strong infantry formations of spear infantry lances and strong bows and crossbows, have strong combat power against the frontal impact of the cavalry.

But it was the mobility of the cavalry that really broke the infantry formation, and it was obvious that the infantry could not always pursue the cavalry in formation, as long as they were scattered or even camped, they could be attacked.

Nowadays, as long as you can win the war, you basically don't pay attention to the lower three roads or the upper three roads, so there is a hook sickle, which is a special war halberd that can both assassinate and chop horse legs and human legs, and also derives weapons such as hook and sickle.

When the infantry fights with the cavalry, the infantry must also have better tactical coordination and psychological endurance, so the infantry of the countries has 40% of the long weapons, 30% of the short weapons, and the remaining 30% are crossbowmen. Coupled with cavalry, the mode of combat was completely different from that of the Central Plains Dynasty of China.

As long as the cavalry dared to charge head-on, they were greeted only by an overwhelming barrage of arrows and spears, as well as hooked and sickles to cut off the legs of horses

What is even more paradoxical is that to this day, Bailiyan has neither found that the Jin army developed cavalry archery technology, nor has it found any records related to mounted archery in any classics, which means that the infantry formation, especially the infantry formation based on the bow and crossbow, has extremely high defense and attack power against a single light cavalry charge.

This time the Jin State attacked the Xian State, the Xian State is located in the northern humid and hot plain, there is no high-quality horse farm, and the horse breed is far inferior to the Jin army horse breed, the number is even less, the Jin army sent a large number of cavalry to fight, is the best policy.

Soon after Wang Shuo left the city, he immediately turned around and traveled from south to north. At the same time, the king of Jin in the south of the city and everyone dispersed, and on the way back to the palace, the prince Jichang and the king of Jin invited Ying to fight:

"Father, why don't you send children to fight with the army in this battle!"

"Father has other arrangements, in a few days the child can go north with the water army, and when the two generals Han He and Wang Shuo defeat the head of the Xian army, it is not too late for Chang'er to lead the army to attack."

"But that Gongzi Yan is really hateful, and he is a thief, if he robs him of his military exploits, wouldn't he have grown the ambition of the country."

Ji Chang was competitive, holding a breath in his chest, not competing with Bailiyan on the battlefield, Ji Chang couldn't swallow this breath.

At the same time as King Jin and Ji Chang were talking, Fan Tao secretly followed Medical Officer Xu:

"Doctor Xu!"

Medical Officer Xu was startled, and hurriedly turned around and responded:

"Yo, Master Fan, scare the old man, I don't know what to advise."

"I just saw Medical Officer Xu and Baili Yan talking to each other, I don't know what Medical Officer Xu and Gongzi Yan are talking about."

"It turned out that for this reason, what the old man and Yan Gongzi talked about was the disease of Xiangguo."

"Oh, nothing else?" Fan Tao got to the bottom of it.

"I also asked the old man to go to the Proton Mansion another day, and instructed the steward He Kuan to make his own decisions."

"Oh?! Decide for yourself, that's all? ”

"Yes, that's it, nothing else."

Fan Tao was suspicious, looking up and down Doctor Xu left and right in the dark, and seemed to feel that he was not lying, so he had to give up.

In the following days, the news that Wang Shuo led his army out of the city was extremely tightly blocked, and almost no one noticed. On this day, Ximen Hua of Tongshuyuan was discussing with Wu Suan, discussing Wu Suan's plans after "becoming famous":

"Wu Shu, this time the warship is built, when will it leave?"

"The old man calculated, half a year as soon as possible, and a year as late. King Jin always had to see the power of the warship before he could let the old man go back, right? ”

"Yes, the King of Jin has a new naval army, the geometry of the warship is still unknown, if the warship is not strong, the King of Jin will have to ask you for the crime."

Hearing this, Wu Suan laughed:

"Hahaha......"

Ximenhua was puzzled:

"Why are you laughing?"

"The old man's boat, even if it leaks, will not sink, and for this reason alone, the old man will also be famous all over the world."

"Oh, what's the trick?"

"Don't say it, don't say it. Although the Jin navy is weak, how can the old man's warship be invincible in the world, as long as it is properly managed, it is enough to reach 100,000 elite sailors. ”

Wu Shu is full of confidence, as long as he uses his warship, no matter how bad the Jin navy is, he can overturn the Xianguo navy.

While the two were drinking and eating meat, a bookmaker outside the courtyard quietly came:

"Lord Deacon, what is the manager of the Proton Mansion asking to see."

"Oh, how did the old man forget about this. Hurry, hurry, please come. ”

"No!"

The bookmaker turned away, and Ximen Hua and Wu Shu said again:

"I don't know if Master Wu Shu designed it or not, why is there something else going on here?"

"It's hard to say, the old man doesn't seem to have seen Wang Shuo patrol the city in the past few days, can't he leave yet?"

Wu was expected, and He Kuan came to the inner courtyard after a while:

"The old man has seen the two."

"Why do you want to be polite, but here for your Highness?" Simon Wah Road.

"Exactly, in the past few days, there has been no trace of the prince, and I heard that Sima of the city government is no longer in the mansion, and the old man is worried about whether the prince will see the letter and go with the army."

At this time, Wu Suan took over and said:

"In the old man's opinion, it is very likely. The military aircraft is very important, even if Gongzi Yan and Wang Shuo have left, the King of Jin will not inform the Proton Mansion, it will inevitably drag on until the outbreak of war, and the King of Jin can only inform us and others, so that it depends on the fate of this son. ”

"In this case, my family can have a life." He Kuan asked anxiously.

"Yes, Gongzi Yan is in the army, and he is full of martial arts, if he is placed in the camp, he will have a lot of vitality. However, the old man thought that he should immediately leave a letter to inform Sai Qian, Sai Qian is now in Sun Guo, and it is difficult to have news for a while. ”

Wu calculated that if Bai Liyan followed the plan, he would definitely flee, and he should flee from the border area, so that the chance of being caught by the Jin State was much smaller. But if you are in a different place, someone must help you, and the royal guests scattered all over the country can just help in this matter.

However, Wu Suan never expected that he asked He Kuan to hide a secret letter in the cuff, but it finally fell into the hands of Wang Shuo, and now Bailiyan went out with the army, Wu Suan believed that he had acted according to the plan, and all kinds of coincidences were entangled together, laying huge variables for the development of events in the future.

Bailiyan went out with the army, and there were cavalry along the way, as little as five hundred, as many as one or two thousand, and all the cavalry were equipped with two war horses, that is, one person took turns riding two war horses.

If there is only one horse, tens of millions of cavalry marching on the road, the brigade often marches 80 or 90 miles a day (two miles here, based on the Song ruler, about 0.9 kilometers, 80 miles and about 36 kilometers), it can reach 12 or 130 miles a day, and the strong attack can travel 1560 miles, but if the attack continues for several days or even more than ten days, the horse will be injured and lose fat, and it will not recover for a month or two, and the serious horse will run to death. [Note 1]

If two horses take turns to change, without rest in between, they both eat and drink at once, and they march at least more than 200 miles a day. Then march for five days in a row, repair for half a day, and then go on the road again, and so on, it takes a month to march from Pingtang City to the border of Xianguo, and now it takes less than 20 days to arrive at the camp of the Northern Army, and if it is a forced march, it should be possible to arrive in 15 days.

[Note 1]: Regarding the speed of marching, it can be roughly divided into three situations, one is galloping, the other is ordinary roads, and the third is non-road field maneuvers. Non-road field mobility is divided into plains, grasslands, hills, farmland, mountains and forests, etc. The cavalry marched in formations, and could not run in groups like in large groups on the vast grasslands and plains, so their speed was greatly restricted. If it is a team walking on the road, it can naturally run quickly.

At the same time, due to the time it takes to feed the horses and rest and camp, the speed of the daily movement is quite limited. "Romance of the Three Kingdoms" in a day of three hundred miles, first of all, we need to clarify a problem, is Luo Guanzhong in the Ming Dynasty wrote the end of the Eastern Han Dynasty, Luo Guanzhong did not know the Three Kingdoms period of the Han Dynasty belly weights and measures, followed by the Ming Dynasty a mile and today is quite a little less, three hundred miles is roughly 145 kilometers, the best Arabian horses now, endurance races are not 145 kilometers, the nineties of the People's Liberation Army horse test, China's local horses run rapidly every day, the fastest is 80 kilometers is a limit.

During the Ming Dynasty, the Central Plains horse breed had been seriously degraded, and it was difficult for a horse to reach a speed of 200 miles a day without changing horses. Therefore, the eight hundred miles are urgent, all of them are horse relays, and a horse can't run even if it dies.