Emperor: When will the Seventh Prince rebel? I will open the city gates to welcome him.

He had just commanded a group of soldiers to climb up the city wall.

Beishang’s national teacher just received the news.

Inside the city wall, Prince Zhenbei was confronting Cao Zhu, and the two armies were about to fight.

Naturally, Beishang's national teacher Yun Yi would seize this once-in-a-lifetime opportunity.

Yun Yi organized the soldiers to climb up the city wall.

Now a large number of soldiers have climbed up the city wall.

A large number of soldiers climbed up the city wall, and sure enough, there were no guards on the wall.

"As long as we control the city gate, our Northern Merchant Cavalry can march straight in."

But Yun Yi, the national master of Beishang, had been waiting for the city gate to open, but it remained tightly closed.

"What's going on? Why haven't you opened the city gate yet?"

Just as Yun Yi was thinking.

Suddenly he woke up with a start, and he shouted, "All soldiers, listen up! Retreat, retreat quickly!"

All the cavalry retreated.

Just as the retreat was completed, rows of Dafeng soldiers appeared above the city.

Just as he imagined.

There was no sound from the soldiers who had gone up, which meant that all the soldiers who had gone up before had been killed.

If they dared to get closer, the consequences would be the same, there would be no difference.

As expected, Yun Yi was the imperial teacher heading north.

The most dangerous foresight is to have a certain degree of judgment. If you know there is danger, you should leave immediately instead of attacking blindly.

Yun Yi withdrew to his own military camp.

On the city wall, Hongxuan ordered his men to throw down all the bodies of the soldiers from the Beishang Kingdom.

There are mostly wild wolves in the northern border. The corpses will be taken away by the wolves not long after being thrown down, so these corpses will not cause rot or plague.

"Qilin Guards! Bring Cao Zhu and Cao Wenxiu up here!"

Soon, Qilin Tail pressed down Cao Zhu and Cao Wenxiu.

The two men looked pale at this moment. They had just made a serious misjudgment.

If they had taken action just now, they would have died and would not be alive today.

And the Trough Column finally lowered its head.

"King of Zhenbei, I am willing to die. Please forgive my child Cao Wenxiu!"

Hong Xuan snorted coldly: "There is a saying since ancient times: Heaven's will can be forgiven, but man's will cannot be forgiven!"

"I have no grudge against you two, but what did you two do to me? Do you want me to spare you now?"

"You, Cao Zhu, are the dignified General Jianwei, but you actually took the lead and disregarded the safety of Dafeng to oppose this king!"

"I am a prince. It is not impossible for me to become an emperor in the future. You actually disrespected me and wanted to kill me. Tell me, do you deserve to die?"

Cao Zhu knew that there was no chance of survival today, so he closed his eyes and said, "Give me a quick kill with the knife!"

"Qilin Guards are executing you!"

If Cao Zhu and Cao Wenxiu were not dead, then Zhenbei King Hongxuan would never be able to completely lead the entire army.

Because there are their loyal warriors among the garrisons in the northern border, and as long as the two of them are alive, these warriors will remain loyal to them.

Even if we release the two of them,

The two of them promised not to compete with him for power, but is that possible? There is a saying since ancient times that there is no room for two tigers in one mountain. Cao Wenxiu has already done something to ambush him halfway.

And when they arrived in the northern border, one of them refused to cooperate and the other wanted to start a war, so one had to die.

Impossible to let go.

Qilin Guard personally held the knife, and with a single swipe, the heads of the two men rolled directly under the high wall. At the same time, Qilin Guard threw the bodies of the two men under the city wall.

From then on, the military power of the entire northern border was completely in the hands of King Zhenbei Hongxuan.

Hongxuan finally killed Cao Zhu and Cao Wenxiu, and no one opposed him taking charge of the northern border anymore.

Do you know why you have regressed? Do you know why you have regressed in the past few days?

Hongxuan ordered:

"General Murong Zhou! You are very familiar with the entire border. Since I have killed Cao Zhu and Cao Wenxiu, their soldiers will be temporarily in your charge. I will call a military meeting now, and you must summon all their officers to the scene!"

"It's the King of Zhenbei, I will do it now!"

General Murong Zhou gathered all the officers. These soldiers and officers had just seen the soldiers led by the King of Zhenbei.

With a single volley of fire, the Northern Merchant soldiers who had climbed up the city wall were shot dead. Those soldiers were wearing thick armor.

One can imagine how powerful the crossbows under the command of King Zhenbei are.

There is nothing that no officer can't do.

Soon all the officers entered the military tent.

Hongxuan looked at the generals at the northern border.

"I have killed General Jianwei and General Dingguo! I have sent my personal guards to explain the situation to my father and the court, and I will inform the cabinet."

"From today on, I will strictly discipline the army!

After he finished speaking, he looked at Murong Zhou:

"General Murong Zhou, how many soldiers can you lead?"

"What I'm talking about is, how many soldiers can you control that can completely control a large battle?"

Murong Zhou answered truthfully:

"If the King of Zhenbei is talking about fighting, I can command 10,000 soldiers! These 10,000 soldiers are the limit of my command!"

Hongxuan thought for a while:

"Ten thousand! Ten thousand is too much!"

"General Murong Zhao, I can only give you five thousand!"

Murong Zhou asked in confusion:

"Why did King Zhenbei only give me five thousand!"

Suddenly he woke up with a start.

"King Zhenbei, do you want to send troops to attack the Beishang army outside the city? This is absolutely impossible. The Beishan cavalry is a very fierce army. If they leave the city, our border guards will not be their opponents at all."

"Besides, 5,000 soldiers are not enough to defend the city!"

Hong Xuan looked at Murong Zhou and said:

"I just looked at the layout of the city. The height of the city wall is high enough. The reason why the Northern Wei soldiers were able to climb up is because you did not take several measures that allowed them to climb up."

The officers in the military tent didn't understand what Zhenbei Wang Hongxun meant.

"King of Zhenbei! I would like to ask, our city walls are not well protected, so those soldiers from Beishang were able to climb up, is that what you mean? What kind of protection do we need to have on our city walls?"

Zhenbei Wang Hongxuan raised his lips and smiled:

"The only thing you didn't do is put barbed wire on top of the wall! If you put circles of barbed wire on the wall, I guarantee that no one in this world will be able to climb up the wall!"

The military tent suddenly became quiet, as if one could hear a pin drop.

These officers felt as if they were struck by lightning.

"Yes, why didn't I think of placing circles of barbed wire outside the city wall? If the city wall is wrapped with circles of barbed wire, then even if they climb up, they will be injured by the barbs and fall down."

With tools like barbed wire, there is no way any enemy could climb up.

Barb wire is actually very easy to make in a blacksmith shop.

It is not only a modern thing. In ancient times, barbed wire was also installed on city walls. It is definitely the best means of defense, no doubt about it.

In this way, the pressure of defense is greatly reduced, so five thousand defenders are actually enough.

Now all Red Star has to do is to fulfill his promise.

Drive away all 300,000 cavalrymen outside the northern border.