Under the order of Yao Changkun, the Northern Army, who was not afraid of loss, approached some of the thunderbolt cannons near Yizhou City to maintain suppression of the thunderbolt cannons in the city. If a thunderbolt cannon rocket flew out in the city, it would inevitably lead to several rounds of bombardment from eight thunderbolt cannons, covering all the dozens of meters around it. After several consecutive times, the thunderbolt cannons in the city gradually became silenced.<-　　　

At the same time, other thunderbolts began to bombard the crowd on the slope. Stone bombs fell one by one, and often disappeared by several people. Sometimes the stone bombs hit the city wall heavily. The huge impact force made the stone bombs smash into pieces when they hit the city wall and turned into dozens or hundreds of small stone balls. However, these small stone balls have greater lethality. Even if they were only the size of a thumb, they hit the vital points. The worst thing was that they were hit by these small bamboos in the abdomen or other unfatal places. They were not allowed to live or die, and they were moaning and howling. Even the Zhengbei Army formation far away from Yizhou City could be heard clearly.

Most of the Jinwu Guards who built the slope had retreated to the city, leaving only a small number of supervisors. These men were wearing heavy armor, holding shields in one hand and steel knives in the other. When they heard the whistling sound of the thunderbolt cannon, they immediately shrank under the city wall. They used the shields and the city wall in their hands to form a cover. As long as they were not hit directly, they would not be hurt. Once the thunderbolt cannon fell, they immediately jumped up, waved the steel knives, and forced the young and strong people in Yizhou to seize the time to build the slope. For those who were injured and lying on the ground, they cut down without hesitation, killed them directly, and then filled the body into the slope.

Under Yizhou City, there are many corpses. However, the slope is still rising at a speed visible to the naked eye.

"Attack!" Yao Changkun pulled out his waist knife and raised it high. Under the central army, hundreds of cowhide drums sounded at the same time. The demon-subduing crossbows loaded on the wheelbarrow were pushed quickly to the city of Yizhou. The soldiers of the North Army each had a straw bag on their bodies. The inside was naturally the soil and rocks produced by digging tunnels from the camp these days. When they shouted, they rushed to the moat. The water in the moat was dried, but the silt inside was half a meter thick. The rusty iron spear was daunting, and they had to fill it up.

There were horns on the city, and the shiny crossbows and crossbows poked their heads out of the walls, and more were long bows with bent bows and strings.

"Flame!" Hundreds of demon-subduing crossbows of the Northern Army were pushed to a place more than a hundred meters away from the city. A general stood in it, waving his long sword, and shouting at the top of his lungs.

The sound of linoline resounded through the battlefield, and suddenly darkened in the sky. Over the city, it was covered by hundreds of demon-subduing crossbows. Under the countless demon-subduing crossbows, thousands of soldiers rushed up shouting and rushed to the moat, threw the bag on their backs into the river, and then turned around and ran away.

The cooperation between the crossbow soldiers and infantry of the Northern Army was extremely good. When the demon-subduing crossbows were spread all over the sky, the infantry just entered the range of bows and arrows on the city. When the crossbows shot onto the city walls, forcing the Jinwu Guards on the city to hide, the infantry rushed to the river, threw their back bags on their bodies, turned around and ran back.

It was not until this time that the counterattack on the city was launched.

On the city tower, Cheng Qun stood in a hidden place, looking at the soldiers of the North Army flowing under the city, his face getting ugly.

"General, what's wrong with you? The Northern Army is just like this. The siege of the city will eventually have to return to the most original source. There is no shortcut to go!" Lankun sneered. Under the fierce counterattack on the city, the Northern Army under the city also kept falling down.

"Lankun, look at the formation of the Northern Army. What is the difference?" Cheng Qun pointed at the city and asked in a low voice.

Lan Kun was stunned and calmed down. When he looked carefully, the terrifying look on his face became stronger and stronger.

"How did Yun Zhao do it, how did he train such soldiers?" The voice was so loud that Lankun himself was shocked.

"The Zhengbei Military Name Zheng Wansheng was indeed not obtained by luck." Cheng Qun punched heavily on the wall.

At the city, the attack of the Zhengbei Army was not as chaotic as other troops. They ran up in a mess and threw the bag on their backs and walked. Standing on the city wall, you can clearly see that the soldiers of the Zhengbei Army showed hundreds of neat teams. They still maintained a relatively neat formation while running. Each team was ten meters apart. After throwing the sandbag on their backs, they turned around and ran back one after another, and they were still neat. Hundreds of such teams shuttled and went back, and there was no crowding situation in them. It seemed extremely smooth. More importantly, this formation allowed them to minimize casualties.

"You are a beauty, how can you be a thief!" Cheng Qun sighed to the sky. At this time, he finally understood why the Baotao Guard Jiang Guangyu and the leading guard Liu Huajian were wiped out so easily. They really had no chance in front of such an army.

In one day, the Zhengbei Army filled half of the moat, and under the city wall, the slope built by the Jinwu Guard also built nearly three meters high. Under the strong attack of the Zhengbei Army, Cheng Qun finally gave up the idea of ​​continuing to build the slope. The three meters high was enough to cause great trouble to the Zhengbei Army. Tomorrow, the moat will be filled, and then the real war will begin.

When he returned to the city government office, Cheng Qun was a little tired. Today, the two sides did not fight each other in close combat, but the first time he saw the true military appearance of the Northern Army, the pressure on Cheng Qun was extremely huge. In the past, he had not fought directly with the Northern Army. The victory after victory of the Northern Army in front of the Mongolian people did not make him feel much shocked, because the Mongolian people had greater failures in front of him. The Battle of Cangjiang was a battle that Cheng Qun had recorded in history. Hundreds of thousands of Mongolian troops hated Cangjiang. But today, Cheng Qun finally understood that in the Battle of Cangjiang, he occupied the right time, place, and people. In addition, the cooperation between the three parties, the Mongolian army was caught off guard and finally made contributions. Today, he saw the military appearance of the Northern Army. The Mongolian people were able to fight with the Northern Army for so long that Cheng Qun felt how lucky he had won that battle back then.

"Let the soldiers have a good rest. Tomorrow will be the beginning of our real contest!" Standing at the door, Cheng Qun looked back at the generals under his command.

"Yes, General!"

"You guys go back too!" He waved his hand. Cheng Qun was also ready to have a good sleep.

"General!" A call sounded on the street. A guerrilla general ran towards him like a flying one.

"What's up?"

"General, something strange happened in the city, and dozens of wells suddenly dried up. The originally full of water disappeared completely!" The guerrilla general's face turned pale.

Water source, this is not a joke, and the generals present suddenly became panicked.

"How can the water dry?" Lankun jumped up.

"Is it because the water in the moat is gone, and these water sources come from the moat?" Another general said by the side.

"Impossible!" Lankun said: "The wells in the city are all deep wells, which are much lower than the water level of the moat!"

Cheng Qun also became nervous.

"Where are these dried wells?"

The guerrilla general reported a series of directions, without exception, all of which were closer to the city wall.

"Not good!" Cheng Qun's face changed drastically, "The other party is digging tunnels. They want to come in from the underground and pass my orders. The city immediately searches to find the source of these tunnels and block them. I am really confused. The soil and stones that the Zhengbei Army landfills the moat today should be dug out by them."

"Yes!" The generals immediately dispersed.

If the Northern Army was asked to dig the tunnel into the city without them knowing it, only a thousand elites would need to lurk in.

It will be enough to cause a fatal blow to the entire Yizhou City.

Digging tunnels to trap the city is not uncommon in the attack and defense of cities for hundreds of thousands of years. There are many records in military books, and there are also many ways to restrain them. For a moment, countless soldiers were densely covered with Yizhou City, carefully detecting the direction where the tunnels could enter, especially in places where the wells were dry, which was the focus of reconnaissance.

By midnight, nearly ten tunnels were found in Yizhou City, which made Cheng Qun feel scared. If the water in the well had not been suddenly dried up, I was afraid that when the Northern Army appeared in the city, I would have known nothing.

I think I was so careless. There is a moat in Yizhou City. Generally, siegemen cannot dig authentic tunnels in such cities.

I don’t know how the Northern Army passed through the underground section of the moat and dug out the passage below.

Cheng Qun, who originally wanted to have a sleep, had to stay in the government office, waiting for his subordinates to return. At this time, he was completely sleepy.

One general after another appeared in the government office with red eyes.

"Have you found it?" Cheng Qun asked.

Lankun nodded, "It must have been found. There are fourteen in total. When they found them, they were digging upwards. The fastest one was only a few meters above the ground. They had destroyed them all. I believe that the Northern Expedition Army in the tunnel was no longer alive."

Cheng Qun wiped the cold sweat from his face, "Have the monitoring been arranged?"

"Don't worry, General, we have set up monitoring points along the city this time. The Northern Army was too careless to dig the tunnels under our feet. They would not have this opportunity again!" Lan Kun nodded heavily, "In the city, there will be a monitoring point at the end every fifty meters. Nothing will happen!"

"Very good, Yun Zhao is so cunning. God bless me, Jinwu Guard!" Cheng Qun sighed to the sky.

The Jinwu Guard did not sleep all night. Under the city, many generals gathered in the large tent of Yun Zhao, the Northern Army.

Yao Changkun knelt in front of Yun Zhao and slapped the blame. During the day, he pushed Yun Zhao backwards in front of the generals.

"Get up, you said it right, and you did it right!" Yun Zhao sighed and said, "I just can't stand those innocent people lying under our crossbow!"

"Governor, as long as these people set foot on the battlefield, they will no longer be the people. We must not be kind. If we don't take any ruthless measures today, Cheng Qun will really build up to more than ten high slopes. In the future, the price we pay will increase exponentially!" Han Zhong walked to Yao Changkun and clasped his fists and said, today when Yao Changkun confronted Yun Zhao, he did not speak. That was because of his identity. He could not do what Yao Changkun could do. Now, Yun Zhao had obviously come back, and it was a good time to make suggestions.

"I know, but when I think of the Yizhou people who were placed in Daji, if we kill one here, they will have an extra family that will lose their husbands and sons!" Yun Zhao stroked his forehead with his hand and shook his head in pain.

"Governor, there is no way to do this. The only thing we can do is to minimize such casualties as much as possible. The way to reduce casualties is to take down Yizhou City as quickly as possible!" Han Zhongdao. (To be continued.)
Chapter completed!