There was a process in which the Hanoi region, with the exception of Nanyang, was transformed from Wanggi of the Shang Dynasty into a frontier area. After Zhou Gongdan put down the rebellion of the "Three Eunuchs", he gave the whole of Hanoi to his (also King Wu of Zhou) another younger brother Kang Shu, and called it the defense of the country, and the capital of the country was in Mocheng. But in this rich land, the country is contaminated with extravagance and likes to be obscene. With the eastward movement and southward movement of the Rong people, finally under the blow of the Rong people, the country was ruined and forced to continue to move eastward, and now they can only live in Puyang, completely becoming a historical audience. This homeland of the country was gradually recovered by the Jin, and after the three families were divided into Jin, they were occupied by the three Jin.

The division of the three families is a confused account. Wei, Zhao, and Han were originally the powerful ministers of the Jin State, and they had long accepted the sub-feudal of the Jin Marquis, and their fiefs in the Jin State were one in the east and one in the west, which was not systematic; When it comes to separation, it is not clear that the territories are mixed with each other. This is especially true in Hanoi.

The Sanjin Dynasty was originally in Shanxi, but now they collectively crossed the Taihang Mountains into the Yellow River Valley, and in order to maintain contact with the homeland of Shanxi, they must maintain at least one passage in Hanoi, which also led to the fact that no one was willing to make concessions here. Due to the poor access to this road, Wei and Korea lost their homeland of Anyi and Pingyang in Shanxi; Only Zhao Guo was able to use the South Korean-controlled Shangdang to barely maintain his homeland Taiyuan in Shanxi because he had opened up the road to Zhongshan State.

On the other hand, Hanoi, located in the Taihang Mountains, was still an important transportation artery at that time. Affected by the overflow of the Yellow River, the central area of the North China Plain is now a lake and marsh wetland, and only the mountainous areas on its edge can maintain stable land suitable for human habitation. And the largest piece of mountainous land in this mountainous area is the Taihang Dongqiu, which is the Hanoi area. From the north to the south of Yandu Jicheng, to the bank of the Yellow River, this road is the first choice.

The road of their attack is about the same as the road when King Wu was defeated: pushing north along the eastern side of Taihang Mountain until Ningxinzhong.

The arrival of the Qin army naturally attracted the attention of the cities of Hanoi, and they also took combat readiness measures for a time. But then seeing that the Qin army only acted in its own sphere of influence, and then dispersed its troops to various counties to provide food, the cities naturally could not be without trade for a long time, so they gradually opened up the city defense. This time, the Qin army assembled again, which did not attract everyone's attention. However, to everyone's surprise, after the Qin army assembled this time, it immediately launched a fierce attack on the surrounding Sanjin cities. Moreover, this round of attacks was not even for the sake of food, but to occupy the city with real swords.

After a night of marching, Yewang's Nanyang army surrounded Yongcheng, and Huai's Nanjun army surrounded Shanyang. After no fierce fighting, the two armies successfully captured the city, and all the strong men of both cities were killed and the city was burned.

The slaughter of two cities shocked the whole of Hanoi. The cities closed their gates one after another, and all of them went up to the city, ready to defend the city desperately.

This is what Wei Yi wants: capturing the city is not the purpose of his operation, but attracting Luoyang's coalition forces to the north is the goal. The greater the movement in Hanoi, the more the princes resolved to abandon the attack on Hangok. - This was Xianyang's instructions to him, and he didn't mention it to anyone except a few county lieutenants.

While waiting for the cities of Hanoi to prepare for battle, the Qin army also centered on Yongcheng and Shanyang, resting and recuperating while occupying the surrounding small cities. For those small cities, Wei Yi adopted the strategy of saluting first and then soldiering, and those who surrendered only requisitioned food, men and supplies, and those who resisted stubbornly insisted on capturing and slaughtering the city.

A few days later, the surrounding small cities were almost captured, and the army of Wei Yi began to continue eastward, preparing to capture the two large cities of Maocheng and Ningcheng, fifty or sixty miles away. The task of attacking the city was still undertaken by the Nanyang Army and the Nanjun Army, and the Guanzhong Army was controlled between the two armies, which was a countermeasure.

Maocheng and Ningcheng are cities with a history of hundreds of miles, it is said that after King Wu cut down, he returned to Ningcheng, disbanded the troops here, announced a truce and boycotted the war, so Ningcheng is also called Xiuwu. To the north of it, Maocheng is also a big city with a very long history. A long history usually means a large population and abundant products, otherwise everyone would have moved early. After the Qin army surrounded the two cities, they were not in a hurry to attack, but went to the surrounding villages to collect people and materials, and prepared siege equipment, as if they were preparing for a long-term siege.

The day after the camp, Ye Peng, who was besieging Maocheng, sent an envoy to report to Wei Yi that in the valley twenty miles to the north, there seemed to be a large army moving!

Wei Yi immediately went to the foot of Maocheng. Maocheng is built on a hill, and several small rivers flowing out of Taihang Mountain meet in front of the hill and flow past the city. Ye Peng set up a lookout on that hill and sent a patrol post upstream along the river. The result of both observations was that there was a large amount of dust flying in the valley, apparently a large group of people moving.

Wei Yi was not familiar with the geography here, so he asked Ye Peng: "Where does this valley lead?" “

Ye Peng actually didn't know the geography of this place, he replied: "Legend in Yili, this valley can lead to Changping and Shangdang!" “

This startled the lieutenant. Changping and Shangdang are in Taihang Mountain, and the mountain pass here is indeed leading to Taihang Mountain, and it is very possible to say that it leads to Changping and Shangdang. If the party can be connected here, it will attract Zhao Jun to the party! I don't know how far the party is from here, if it's very close, and there are more than ten or two hundred thousand people, then I will be miserable!

Wei Yi immediately sent someone to call Nanjun Wei Feng as well. After explaining the situation to him, Wei Yi asked Wei Feng to prepare to withdraw from the siege of Ningcheng and transfer his troops to attack the Zhao army from Shangdang. Wei Feng didn't expect to encounter the Shangdang army here, and immediately felt that the situation was grim and went back to prepare for battle.

Another day passed, and sure enough, the outpost of the Zhao army was detected by the outpost in the northern mountain pass, and they confronted each other for a while, and left each other. The other two or three sentinels of the Qin army in the mountain pass showed no signs of the group's action, and it seems that only this Zhao army went out of the mountain to participate in the battle.

Wei Yi and Ye Peng thoroughly inspected the terrain here one day yesterday. Maocheng is only about 20 miles away from the mountain pass in the north, but it is not easy to walk on the way to the river. They unanimously decided to control the army north of Maocheng and give the muddy and difficult part to the Zhao army. The Nanyang Army met the enemy north of Maocheng, the Nanjun Army met south of Maocheng, and the Guanzhong Army hid behind the hill, and the camera delivered a fatal blow.

The Zhao army also discovered the existence of the Qin army, and after its vanguard troops rushed out of the valley, they immediately formed a formation and prepared to meet the battle, covering the large army behind them to go out of the mountain. Wei Feng has also brought his troops to Maocheng here. He handed over the task of camping to the camp manager, and he went up the mountain to observe the movements of the Zhao army with Wei Yi and Ye Peng.

The slower speed of Zhao's army out of the valley suggests that the roads in the valley may be narrow and difficult to pass. Ye Peng regretted a little and said: "If you take a battalion to the valley, he will not be able to come out!" “

Wei Ji said: "I want it to come out and kill it!" “

It took a whole day of work for Zhao Jun to completely go out of the mountain and form a battle in front of the valley. The three of them were impatient and left in the afternoon. Ye Peng told him to look out and closely monitor the movements of Zhao Jun; At the same time, a patrol post was dispatched to reach the outpost of the Zhao army.

By the time the Zhao army was completely out of the mountain, it was already dark, and the Zhao army camped on the spot, only releasing sentry scouts in front. Looking at the camp of the Zhao army, it seems that there are forty or fifty thousand people. Wei Yi asked Ye Peng to sneak attack in the dark night, but the effect was not good because the road was muddy and difficult to walk. The two of them then strengthened their determination to fight a decisive battle under Maocheng.

After dawn, Zhao Jun began to move forward. The Nanyang Army opened a position in the north of the city, the Nanjun Army opened a position in the south of the city, and the Guanzhong Army quietly moved behind the hill at night. The headquarters is located on the top of a hill.

The Zhao army walked the ten-mile-long muddy road with difficulty, and when they came out, the formation was already disordered, and Ye Peng sent two battalions to charge and harass the Zhao army. The Zhao army drove the Qin army back and continued to line up. Ye Peng then ordered the whole army to charge. Although the formation of the Zhao army was disordered, the basic structure was still there, and when they saw the Qin army rushing towards them, they first disrupted the Qin army's position with a rain of arrows, and then also launched a charge.

Wave after wave of soldiers met in front of the formation, fought each other, scattered and retreated, and the team behind them quickly stepped forward to fill the position of the upper team. By noon, the Qin army was gradually weakened, and the formation was slowly retreating. Although the two armies are still fighting together, the overall situation of the Zhao army is moving forward.

General Zhao Jun seemed to be very satisfied with this result, and desperately beat the drum, urging Zhao Jun to step forward. Although the Qin army was also beating drums and ordering soldiers to come forward to meet the battle, they could not restore the previous front. After retreating three or four miles like this, Maocheng was already behind him.

The defenders of Maocheng watched the battle from the city and saw the process of the war clearly. They could even see the Qin army lying in ambush behind the hill, and knew in their hearts that the Qin army was luring the Zhao army into the ambush circle. As the Zhao army gradually advanced, the people in the city began to shout: "Don't enter, don't enter, there is ambush, there is ambush!" Because of the distance, their cries were not heard at first.

As the battle line gradually approached Maocheng, the shouts on Maocheng also reached the ears of both sides, and Zhao Jun was a little panicked for a while, not knowing whether he should step forward. At this time, the Guanzhong army, which was ambushed behind the hill, suddenly came out.

The stalemate of the battle immediately upset the balance because of the appearance of this army. The Zhao army, who was full of confidence and was ready to defeat the Qin army in one go, suddenly realized that he had been tricked, and there was an urgent sound of gold in the Zhao army's camp, and the Zhao soldiers turned around and retreated. Qin Jun shouted and chased after him.

So the battle turned into a one-sided slaughter. The Qin army shot rows of arrows, and the retreating Zhao army was unobstructed, and was shot down by the arrows one after another. The Zhao army fled to the muddy area, and people kept falling and tripping over the people next to them, and they were completely defeated. The Qin army moved forward steadily, shooting the retreating Zhao army with arrows, and stabbing the injured and fallen Zhao army to death and cutting off their heads.

The defeat of the Zhao army also shocked the defenders of Maocheng, who opened the gates in panic and fled. The Nanjun army in the south of the city took the opportunity to seize Maocheng!