Because the suspicion of the Beiping Army envoys was only an exchange between Liu Jien and Liu Jiyuan, and in order to prevent this from being just his own misjudgment and causing unnecessary trouble, Liu Jiyuan did not alarm the other ministers when he went to arrange the archers, so seeing that the Beiping Army envoys had arrived at the city gate, the other ministers hurriedly sorted out their clothes, and under the leadership of the prime minister and the privy envoy, the Wenchen military generals were divided into two teams, left and right, and greeted the Beiping Army envoys with a smile on their faces.

However, the ministers soon discovered that things did not seem quite right. Because the envoys of the Beiping Army who came on horseback saw that they met them, only a few people restrained their mounts, and the rest of the people not only did not slow down the speed of their horses, but rushed their mounts and accelerated their horses to the limit. Not only that, but the knights on these horses, whether they were reining in their horses or speeding them, invariably pulled out iron pipes from the leather bags hanging from their saddles. Although these ministers of the Northern Han court knew very little about firearms, they had only recently experienced the attack of the Later Zhou army for many days, and they had heard of the musket as a cutting-edge weapon, if not before, so most people could still guess that the opposing knight was pulling out of the bag with a musket.

When the envoys arrived at the gate of the city, not only did they not dismount and greet each other with their side, but they also drew their guns like flying horses, and even fools knew that the other party was not good and had bad intentions. Seeing that the other party had already raised the musket in his hand to his shoulder, these Northern Han officials, who were still smiling, were immediately confused. The civil officials panicked, and those who were more courageous turned around and ran, but those who were less courageous did not even have the strength to run, but only knew that they stood there trembling, and some even collapsed on the side of the road, unable to move. The generals performed relatively better, the brave ones drew their swords or knives to prepare to attack, and the cowardly ones, although they did not dare to face the enemy, they also knew how to warn the city, and while turning around and running into the city, they loudly called on the soldiers defending the city to be on guard and resist this sudden attack. For a while, there was a mess outside the Xuande Gate.

Five hundred warriors from the "Flying Dragon Army", "Ranger Battalion" and "Wolf Tooth Battalion" were divided into two teams, and more than 100 people stopped about 100 paces away from the city gate, raised their rifles and machine guns, and aimed at the head of the city, ready to suppress the defenders at the head of the city at any time. The remaining 400 horsemen pointed their guns at the civil and military generals of the Northern Han Dynasty, especially the prime minister and privy envoy who led the team, as well as the brothers Liu Jien and Liu Jiyuan, whether the other party was rushing towards him with a sword or fleeing into the city gate with all his strength. The only ones who weren't targeted were the cowards who were so scared that they collapsed to the ground and couldn't shoot at a good angle.

The speed of a person's run is not even as good as that of a horse, let alone compared to a bullet, and even those strong and regular Northern Han generals do not have this ability. Thus, although they were far faster than the helpless civil officials, they still had no chance of escaping the roaring hail of bullets. In particular, those Northern Han generals who reacted the fastest, ran in the front, and planned to warn the defenders in the city, became the priority "care" of the Beiping Army's raiding cavalry detachment.

In the blink of an eye, the four hundred cavalry of the Beiping Army rushed into the city gate with the Northern Han officials who fled the road, but entering the city gate did not mean that they had entered Taiyuan City, because they only rushed into the city gate of Weng City outside the Xuande Gate, and the main gate of the Xuande Gate was still dozens of steps away from them. At this time, the 400 cavalry of the Beiping Army were divided into two teams again, of which 100 heavily armored knights were stationed in Wengcheng, on the one hand, they formed a circle formation and raised their guns to guard against the defenders in the direction of the main gate and the surrounding city walls of Wengcheng, and on the other hand, they automatically acted as targets to attract the attention of the defenders to cover their comrades for the next move. The rest of the three hundred horsemen continued to move forward, heading straight for the Xuande Gate. …,

At the same time that the Beiping Army's raid cavalry detachment divided its troops again and the main force rushed to Xuande Gate at full speed, the 500 archers who were dispatched by Liu Jiyuan finally climbed the city wall of Wengcheng under the leadership of their own commander after a short panic, and began to open their bows and arrows on the Xiangxia side, especially the cavalry of the Beiping Army located in the center of Wengcheng. It's just that their resistance and resistance came a little late, and these Northern Han archers showed up on the city wall, and the two Beiping Army covering squads that had already set up their formations and were ready to fight immediately suppressed and shot at the city, not giving these Northern Han archers a chance to block their companions with all their might. In the face of the rain of bullets that were almost completely different from the firearms used by the Zhou army before and after the siege of the city, and poured down on them like a scoop, these Northern Han archers were shocked and incredulous at the same time, and their hearts were also filled with deep fear of the hundreds of cavalry under the city. In addition, when their commander commanded them to launch a fierce bow and arrow attack on the so-called "Beiping Army Envoy Regiment" under the city wall, he was quickly noticed by the enemy troops under the city, and was invariably fired by more than a dozen knights with foot and machine guns, and lost his life as soon as the battle began. These leaderless Northern Han archers had lost their morale and fighting spirit, and their resistance to the cavalry raid detachment of the Beiping Army under the city basically failed to play its due role. Under the cover of their own firepower, the three hundred main horsemen of the cavalry raid detachment of the Beiping Army quickly rushed into the main gate of the Xuande Gate, and after a machine gun strafed and dispersed the limited number of gatekeepers at the city gate, they guarded the city gate with 100 people, and the other 200 people rushed to the head of the city along the horse road, attacking the Northern Han archers who were shooting at each other with their own covering squads on the city, and blocking the Northern Han defenders who might approach the Xuande Gate from other directions.

It is said that although the Later Zhou army has withdrawn for many days, the defense in Taiyuan City is far less severe than when the Later Zhou army came to the city, but as the capital of the Northern Han Dynasty, the number of defenders in Taiyuan City is more than 10,000 people, plus the people and horses drawn from the surrounding states and counties, the number of Han troops in Taiyuan City at this time exceeded 20,000. If the 20,000 defenders were organized to counterattack the cavalry detachment of the Beiping Army that had raided the Xuande Gate, even if the Beiping Army had an advantage in weapons, it might be in a situation where there would be a shortage of troops and a lack of support on the left and right due to the limited number and too many directions that needed to be taken care of, thus bringing trouble to the completion of the task of occupying the city gate -- in terms of terrain alone, the geographical advantage of the cavalry raiding detachment of the Beiping Army was far worse than that of Zhang Zheng who led 500 men to defend the Gubeikou Pass, and it was much more difficult to defend.

However, what is fortunate is that the great pursuit at the gate of Wengcheng made the civil officials and military generals who had the ability and power to mobilize the whole city to die, wounded, and paralyzed, and no one could escape into the city to organize the defenders to resist and recapture Xuande Gate. Therefore, when the main cavalry force of the Beiping Army, which was several miles away, saw the three green signal flares sent by the raiding cavalry detachment and killed the Xuande Gate in a flood of mountains, except for those Northern Han officials who were still paralyzed on the ground, they did not encounter any organized Northern Han defenders to stop them. More than 10,000 men and horses, led by Mutel, entered from the Xuande Gate as if they were in a no-man's land, and joined the raiding cavalry detachment that was still firmly guarded there, and then divided into several roads according to the long-established plan to kill the targets they needed to occupy. When Zeng Zhilin and Wang Feng led the main infantry into Taiyuan City in the early afternoon, the entire city was under the control of the Beiping Army except for the imperial palace, which was temporarily not attacked according to the previous Jihua.