At the foot of Helan Mountain, the green plains on both sides of the river are full of grass, which makes Fusu, the son who is full of wind and sand, feel relaxed and happy.

After the head of Fusu agreed, Tang Duo, a Mo master who knew a lot about farming, got off the horse and tried the soil, and he was pleasantly surprised to find that unlike the yellow sand hard soil that had traveled hundreds of miles along the way, the soil here was the black soil where the river had been silted up for many years, the grass and trees had withered and died, and the cow and sheep dung had moistened it.

Tang Duo said: "If it is according to the standards in "Yu Gong", at least it can be used in the middle of the field, and if this big river is used again to open up a ditch, it can reach the middle and upper levels!" ”

Each school has its own ancient sages that it admires, and the Mohists most admired Dayu. Although most of them were small craftsmen, they did not discriminate against peasant families, and after entering the Qin Dynasty, they gradually merged with the peasant families who took refuge in Lü Buwei, but they also absorbed a lot of their knowledge.

Fu Su bowed his head and said with a smile: "Didn't Mr. Chun Yu say that everything outside the plug is a useless wasteland?" I should have taken him to see it. ”

Chun Yuyue couldn't answer this question, because although Fusu had to come here to join the army, he couldn't bring too many people, so he left Chun Yuyue in Huamachi.

In the worldview of the Central Plains people, they do feel that outside the Central Plains, there are four wildernesses, starting from the four wildernesses, the more you go out, the worse the environment becomes, until the four poles reach the peak. This kind of barren place can only survive the barbarian Rongdi, and the civilized Central Plains people do not have to set foot in it.

Fusu also thought so before, which was also one of the reasons why he opposed his father's use of troops against the Four Desolations, but the scene in front of him greatly increased his knowledge.

But that doesn't change Fusu's belief that the war is worth far more than it is gained.

"That's right, there is indeed a large area of good land under Helan Mountain, but isn't it the opposite of the north to rely on the requisition of people's husbands, delay the agricultural time, and barren the interior as the price, and travel thousands of miles to open up the frontier in order to seek prosperity? If the people are allowed to rest and cultivate at home, the new land that is cleared may far exceed the value of the land. ”

Qin has more than the land, but not enough for the people, and it is not wise to kill enough to fight for the surplus.

But this sentence Fusu can only hold in his heart and can't say it, the last thing the prison army can do is to hit the morale of the army.

With a gentle smile, under the guidance of Fu Zhi, he went straight to the riverside military camp, where the two armies of Beidi and Longxi had already met, and now they were stationed together. Li Xin also only brought soldiers over, and the two armies combined amounted to about 30,000 people, and the scale of the camp was already not small.

Knowing the northern soldiers of Fusu, he pointed to the prison on the chariot from afar, and proudly told the Longxi soldiers that this is the eldest son to the front line, and the supervisor of Longxi is Meng Yi, and he is still in the rear to supervise the grain, although the status is not low, but compared with the eldest son, the card is more than a little worse.

According to Fusu's prior understanding, the Xiongnu men in Helan Mountain added up to no more than 10,000, and they could not pose a threat to this army at all. But from twenty miles away, he found that the sentry scouts were on patrol with extreme vigilance, and the large camp was firmly entrenched, and the sharp antlers were scattered along the important roads, which were a sharp weapon against cavalry raids.

After entering the big tent of Li Xin and Heifu discussing military affairs all the way, Fusu felt that the atmosphere here was solemn, all the generals and captains were solemn, and the staff pointed to the map and argued.

"Dare to ask the two generals, what happened?"

After nodding at Li Xin, Heifu took a deep breath and informed Fusu of the bad news.

"Childe, there is no trace of a Hun or a single animal in the Helan grassland, I and General Li sent scouts to look for them in all directions, and just now, the waiting horses who were patrolling the north brought back two messengers with several arrows in their bodies, which were the knights of the good family that I sent to warn General Feng Zao four days ago. They told me that two hundred miles away, at Baiyang Mountain, there were more than 10,000 soldiers in Shangjun, and they were besieged by 50,000 or 60,000 Huns! ”

……

"Fifty or sixty thousand rides?"

Xiao is Fusu didn't know much about military affairs, and he was also shocked by this number in a cold sweat, and couldn't help blurting out:

"Could it be that the scouts are mistaken, how can the Huns have 50,000 or 60,000 people? Didn't General Wei say to his father before, the entire Huns, excluding the four parts of Henan, were only seventy or eighty thousand horsemen, and the Huns in Helan were counted as more than 10,000 horsemen, even the half-grown children who could shoot bows. Shouldn't the main force of the Xiongnu be in the north and fight with the generals of Qiang and Meng, but how could they gather so many horses and horses and appear in Henan? ”

If so, will they not want the royal court and Manchester City?

Heifu shook his head: "Then another person galloped back, his description is no different from the other two, I believe that the soldiers under his command are all trained warrior knights, and there will be no mistake!" ”

What he is most worried about now, in addition to the annihilation of friendly troops by the Huns, is the dozens of good sons who stayed behind to lure away the Hun scouts in order to let the Hou Cavalry successfully come back and report the news.

Gan Chong, this young man whose background is not as good as Qianghua, who is not as brave as Fu Zhi, and Heifu does not pay much attention and expectations to him, but he uses his fearlessness and unretreating to send back important information, Heifu really hopes that he can miraculously survive the pursuit of hundreds of Huns, and not die here.

At this time, Li Xin said: "The scouts in Longxi all said that the Helan grassland is empty. ”

He raised his head and looked at Heifu and Fusu: "Since the Huns can give up Helan, why can't they give up the royal court?" Give up the northern fake, or even the Hetao! ”

Heifu showed a wry smile: "That's right, the Hu people and the Central Plains people have different concepts of land, and temporarily giving up a large area of territory is unreasonable for the Central Plains state, but for the Huns, it is nothing." ”

The Qin Dynasty had never fought against a steppe country like the Xiongnu in the past, and although the proportion of cavalry was increased, the combat idea was still the same as that of fighting the Six Kingdoms in the past, that is, to force the pressure with force.

Forced by the pressure of communication and logistics, the Qin army could not concentrate everyone in one place on a two-thousand-mile front, so that without fighting, its own supplies would collapse first, so it could only adopt the method of "separate advance and joint attack".

It seems that the Qin army has an army of 300,000, although half of them are Minfu, and after the Xiongnu lost Lin Hu and Yun Yan, and was defeated by Heifu, their strength was greatly damaged, and it was difficult to win because they were outnumbered.

But what is the many, and what is the few?

It is by no means a simple addition of the total strength, but depends on the strength invested by both sides within a limited time and place, which is also the "I am exclusive and the enemy is divided" in Sun Tzu's Art of War.

As the weaker side, if the Xiongnu foolishly fought a decisive battle with the main force of the Qin army, the odds of victory were not high. They could only take advantage of the terrain and maneuver to fight, drill into the gaps between the various units of the Qin army, concentrate their forces, and annihilate one of them first.

At this point, the Huns had been planning a tactic for half a year, and they were about to come out.

"First take advantage of the small half year of the Qin army's grain truce, and slowly withdraw people and animals, anyway, the grassland is vast, and grazing can be carried everywhere in summer, so that our army can go deep into the outside of the fortress, stretch the supply line, and completely expose our own purpose!"

"And the Huns concentrated their forces, and Ren Er came a few ways, and I only went all the way." Heifu said: "Tou Man Danyu, he must think like this!" ”

"That's right, the one who knows the few wins."

Li Xin bowed: "This time, the Huns have won the first move!" ”

This is war, and plans never keep up with changes.

Fusu clenched the sword on his waist, even if he won the victory and captured Beijiao and Henan, he still didn't feel that the Qin Dynasty had gained more than it lost, let alone destroyed all the way first? That's 20,000 soldiers! If he dies outside the Saiwai, even though Fusu does not need to be responsible for the Shangjun soldiers, he still feels that he has done something wrong.

At this time, Heifu stared at the map, but suddenly burst out laughing.

Everyone in the tent was at a loss, and Fusu saw that Heifu was overjoyed, so he said, "General Wei, what is the countermeasure?" “

Heifu said: "The reason for his joy is that General Feng Zheng has found a great opportunity for Great Qin to annihilate the main force of the Huns!" ”

Everyone looked at each other, but Li Xin, the only general, reacted: "That's right, although Touman Shan Yu is cunning, I'm afraid it's a little wrong." ”

He pointed to the location of Baiyang Mountain on the map and said, "What he picked is not a persimmon that is easy to pinch!" ”

Heifu agreed: "That's right, my Daqin four-way border army, every way, is a strong pawn who has experienced the test of sweeping the Six Kingdoms, and they are all hard bones!" ”

"But I've heard a saying."

After Fusu entered the army, he still read some military books, although he was only in the preliminary stage of understanding.

He said: "The ancients said that one car was six horses, and six horses were one pawn. The riders of the chariot and the soldiers of the army are also defeated by ten thousands, and ten by ten thousands; Ten horsemen defeated a hundred people, and a hundred horsemen rode away a thousand people, which is a large number. ”

"Right now, General Feng is located in the flat and open grassland, and it is not as good as one enemy and one horse, not to mention more than 10,000 people, and 60,000 enemy horsemen?"

Li Xin, who was the best at using cavalry in the Qin Dynasty, shook his head: "Childe, there is also a saying in the Art of War that if the chariot and cavalry are invincible, then one horse cannot be used as a foot soldier." ”

Chariots and cavalry were used inappropriately, and in battle a cavalry was not enough to match an infantryman. The cavalry is the eyes of the army, which can be used to reconnoiter and guard, track and pursue the fleeing enemy, cut off the enemy's food routes and attack the scattered and wandering enemy, even if the Huns are good at riding and shooting, the use of cavalry, because there is no high saddle stirrup, is nothing more.

They are certainly strong in the athletic warfare on the steppe, but besieging the strong-bodied chariot bases and attacking the strong-bowed and powerful lines are not their strong points.

Heifu added: "Especially the Shangjun soldiers, the last time they lent a thousand crossbowmen to the north to guard the grain team, they shot thousands of Hun cavalry and retreated in embarrassment, and now they are in a favorable terrain, if they rely on Baiyang Mountain to meet the enemy with four arms, the Huns will never break through the formation in a short time!" ”

Heifu raised his hand, and his palm included the entire Henan land on the map: "The Huns thought that they surrounded the Shangjun soldiers, and after annihilation, they could retreat with their whole body. As everyone knows, in addition, the three Qin armies gathered, and the two generals of Qiang and Meng also found that the main force of the Xiongnu was not in Beijiao, but in Henan, and had sent troops to support. ”

"Now, as long as the Shangjun soldiers hold their positions and hold back the Huns, while our Beidi and Longxi armies go to help, cut off the road for the Xiongnu to retreat north to Hetao, so that they cannot attack or retreat, and are trapped between the desert and the big river, waiting for the reinforcements of the two generals of Qiang and Mongolia to arrive in ......."

Heifu knocked on the position of Feng Lingfu of Baiyang Mountain, and said optimistically:

"You can combine the inside and the outside, give the Huns, and come to a center to bloom!"