Lu Yi sent a large number of scouts to pay close attention to the movements of Han Sui's troops, focusing on the dynamics of Qianghu in Yuzhong County and Yongshi County; Now he is not in a hurry to travel every day, and he must keep the officers and men physically strong enough to be ready to fight at any time.

The Qianghu cavalry in Yongshi County and Yuzhong County quickly assembled and prepared to join the Han Sui forces that came to support, and then fight a decisive battle with the Han army.

Lu Yi was waiting for such an opportunity, he had been worried about the evacuation of the Qiang people, and the military advisor forbade him to cross the river to pursue, and even if they did not evacuate and hid in the mountains, it would be difficult to find them in this season, and if the other party wanted to fight a decisive battle, it would be an act of seeking death, and they must be fulfilled.

Han Sui also attached great importance to the role of scouts, and a large number of scouts had been sent out before the large army had set off.

He was very cautious, and at the same time as sending troops, he also gathered a large number of cavalry on standby, and in case the battle was lost, he could meet them to cross the river at any time.

It is now summer, the water level of the Yellow River is very high, the flow speed is very fast, the river surface is very wide, and it is very difficult to build a pontoon bridge.

Han Sui's military literacy is very high, he thinks very comprehensively, and arranges very carefully, which is also the reason why all the ministries trust him and support him as the leader of the alliance.

Before the battle began, the battle between the scouts had begun, and the scouts on both sides had suffered a lot of losses.

After Han Sui confirmed that there were only 20,000 officers and soldiers, he crossed the river with confidence and went to Yuzhong County to join Xianlingqiang and Beidiqiang.

Lu Yi's march was very slow, and after Han Sui and the others arrived in Yuzhong County, he was still marching slowly; He is a master of art and bold, and he is determined to attract all the Qiang troops in order to achieve a great victory; The scout reported that there were about 50,000 rebels in Yuzhong County, and Lu Yi was not worried or scared at all, and he was still a little excited in his heart.

Han Sui thought that the officers and soldiers were afraid and cowered, and some even suspected that they were waiting for reinforcements from the government, hoping to take the initiative to attack and eliminate the 20,000 horses as soon as possible so as to cope with the next war.

They were extremely envious of the armor and weapons of the officers and men, and if they completely annihilated 20,000 people, the captured weapons and equipment would be able to arm more troops, and those horses, tents, and food would also be precious strategic materials.

Han Sui was resolute and unmoved, and insisted on adopting the strategy of waiting for work at ease, waiting for the officers and soldiers to arrive before fighting a decisive battle.

The reason why he was reluctant to leave Yuzhong County too far was because he was afraid of falling for the tricks of the Han people, and he had studied the wars that occurred in the Gaoshun forces, all of which were won by sneak attacks, roundabout encirclement, cutting off grain routes, rapid raids, ambushes and encirclements, and countermeasures and internal responses.

In order to confuse Han Sui, Lu Yi still insisted on marching slowly, and it took more than half a month to reach a place forty miles east of Yuzhong County, and he still did not wait for the news of Zhao'an's success or the news of Lu Yan, and the war was inevitable.

On the second day, Lu Yi set up camp ten miles away from the county seat of Yuzhong; He despised Han Sui very much in his heart, and he was so timid that he didn't send cavalry to harass him.

On the third day, Han Sui led 50,000 cavalry out of the city first, and lined up five miles east of the city, waiting for the arrival of Lu Yi; He has confirmed many times that there are only 20,000 Han officers and soldiers, and there are no reinforcements, and he has the certainty of victory in his heart, and he will devote all his strength to prepare for a battle.

Lu Yi got a report early in the morning, and Han Sui set out, and 50,000 troops lined up five miles away to fight; He was overjoyed, but did not rush out of the camp to meet the battle, and ordered Lu Ying to lead 5,000 infantry to hold the camp, while the rest of the personnel rested well, fed and drank water to the war horses, and the soldiers had another meal before the time.

The time had passed, and the army was ordered to leave the camp.

The first battalion of 5,000 infantry was in the center, under his personal command; 10,000 cavalry, led by two other divisions, lined up on the left and right, guarding the safety of the flanks of the first camp; Lu Ying stayed in the barracks to protect the logistics baggage.

The scouts reported that the Han officers and soldiers only dispatched 15,000 men and horses, and 5,000 infantry, Han Sui and the others were relieved, and they all felt that they had the chance to win.

Lu Yi's march speed was very slow, and after he formed a formation outside the camp, he moved forward slowly, keeping the formation intact, intending to attract Han Sui to charge, but also to keep the infantry physically strong, and the longer the time elapsed, the more beneficial it would be for him.

The formation of the first battalion was very conventional and simple, with 5,000 infantry fanning out, 1,000 giant shield soldiers holding 500 giant shields in front, 1,000 pikemen and 1,000 sword and axe men assisting at intervals, 2,000 crossbowmen in the rear, and 4,000 people except sword and axe men were equipped with Bangang (hemp steel) fine knives, which were extremely sharp.

At two o'clock in the afternoon (half past eleven in the morning), the temperature was hot, and Han Sui's officers and soldiers had been waiting for an hour and a half, and the men and horses were hungry, thirsty, tired, and demoralized; Han Sui felt that he had to launch an attack as soon as possible, otherwise, the longer the time dragged on, the lower his morale would be; Now that he is unable to ride a tiger, he can only attack, and if he retreats now, if the officers and soldiers pursue, the retreat is likely to turn into a rout.

Fifty thousand against fifteen thousand, in the eyes of the rebels, this is a battle without suspense.

Han then gave the order to attack, and the generals immediately seemed to be a different person, and their spirits were shocked; Koji Yi only has such a small number of people, where do they put it in their eyes? So all the cavalry rode forward, hoping to rely on the impact advantage of 50,000 cavalry to crush the Han officers and soldiers in one wave.

Seeing the galloping of thousands of horses, Ko Yi ordered the whole army to bow down and hide under the giant shield; Han Sui's cavalry was all proficient in cavalry and archery, and the Liangzhou Iron Cavalry was even more famous, so Lu Yi had to deal with it carefully; Many officers and soldiers were pale with fright by the formation of Han Sui's cavalry, and they were skeptical, whether they could withstand the onslaught of 50,000 cavalry? But now the situation does not allow them to back down.

Two hundred, one hundred, fifty paces, the cavalry gradually approached; When they were about thirty paces (45 meters) away from the front army, Koji Yi gave an order, and all the 2,000 strong crossbowmen got up and raised their crossbows in turn to shoot.

Crossbows have a stronger impact than bows.

And the fan-shaped formation that Koji discharged also allowed the two thousand crossbowmen to concentrate on shooting the first troops to arrive.

All of a sudden, the battlefield was filled with the wailing of war horses, the cavalry suffered countless casualties, and a small number of cavalrymen rushed to the front of the Koji Yi array with crossbow arrows, but they were blocked by the giant shield and spear array, and either the people who were hit turned over on their backs, or pierced by spears, but the intact ones were cut off by the sword and axe hands, and the heads were cut off.

Although Han Sui has been in battle for a long time, and the Liangzhou iron cavalry is also elite, but he has never encountered such a formation, such a tactic, the whole team is completely out of formation, the cavalry in front of them was blocked under the high-speed gallop, squeezed into a group, just collided with each other, squeezed, trampled and countless people died, and the cavalry behind the formation saw that the situation was not good, and they fled one after another.

Ko Yi ordered the pursuit, and the officers and soldiers of the 5,000 Xiandeng battalion shouted while chasing, tens of thousands of troops were beaten and cried wolves, and the cavalry on both sides outflanked from the left and right to prevent Han Sui's soldiers from scattering and fleeing.

The gate of the county seat was narrow, and it was difficult to enter the city in a short time, so Han Sui had no choice but to lead the remnants around the city and retreat westward along the Yellow River.

Lu Yiqin led the officers and soldiers to chase for dozens of miles before returning to Yuzhong County in victory.

At this time, the county seat has been occupied by 5,000 infantry led by Lu Ying, and the baggage has been transferred into the city, and Han Sui's baggage in the city has been captured, and the families of Xian Lingqiang and Beidi Qiang have been captured except for a small number of absconding.

Han Sui soldiers, killed and captured, led less than 10,000 people to flee back to Hexi.