A group of newly shaved people were filled with the ranks of clothing, and then Dorgon ordered them to push the shield cart to attack the city.

The artillery of Wu Zhenchao Ha Camp, Tianyou Army, Tianzhu Army and other Han Eight Banners Army roared, and the guns spit out flames of different lengths. The shells of all sizes hit the city wall, and the solid Gaoyang City Wall remained unmoved.

Under the machete of the Qing army, the young and strong Ming countries, who had just been incorporated into the Baoyi Aha, pushed the shield cart and approached the city wall step by step.

Dorgon changed his tactics of siege, suppressing the defenders with artillery fire, and then let a large number of coats push the shield chariots to approach the city wall. The shield chariots were filled with sandbags. When the shield chariots approached the moat, they threw the sandbags on the ground, gradually piled up, and finally piled up the city walls, thus building a Yuliang Road. As long as the Yuliang Road is completed, not to mention the heavy infantry, the cavalry can directly rush up the city wall. At that time, any bastion or arrow tower will become a decoration.

The defenders at the city wall resisted fiercely, with catapults, bird guns, bows and arrows, and nine-headed bird heavy muskets, smashing down all kinds of projectile arrows, making the bodies of Baoyi Aha who built the Yuliang Road pile up like mountains. The Qing army simply buried the bodies in the Yuliang Road and threw the sandbags directly on the pile of corpses. In addition, the weather was cold, and buckets of water from the river poured down on the Yuliang Road. The ice layer on the sandbags gradually thickened and became extremely strong.

According to Dorgon's estimate, it only takes three days at most to reach the city gate in Yuliang Road.

To be honest, there is really no way to crack the Yuliangdao siege tactic of Zhang Shiwen on Dorgon. He did not expect to dig an authentic tunnel out of the city, dig under the Yuliangdao to bury gunpowder, and blow up Yuliangdao. He could only watch Yuliangdao extend little by little towards Gaoyang City Wall.

Fortunately, Zhang Shiwen thought of a countermeasure: he ordered the Qing army to build a wall behind the city wall at the location where the Yuliang Road was built, so that the Qing army would break in and be blocked by the inner city. Of course, this method was not as effective as Li Hong digging the tunnel and blowing up the Yuliang Road when he was naturalized. As long as the Yuliang Road was not destroyed, the Qing army would continue to attack this gap, and then the gap would become a flesh and blood mill, and soldiers on both sides would sprinkle a large amount of blood here, and a large number of lives were piled up in the gap.

As the Qing army approached the Yuliang Road, the bastions on both sides played a huge role.

The front of the Yuliang Road that was pushed was as high as the city wall, blocking the front firepower shooting range. However, for the two prisms set on the side, there was no problem of the shooting range being blocked. The two prisms kept spitting out flames, and the archers standing at the top of the fortress also shot round after round of light arrows, killing and injured Baoyi Aha who built the Yuliang Road.

The large number of Paoyi Aha's casualties did not shake Dorgon's determination to break through Gaoyang. At present, the main force of the Ming army avoided the war, and Dorgon wanted to take this opportunity to eradicate Sun Chengzong.

Not to mention Zhang Shiwen, who was sent by Li Guodong to assist Sun Chengzong, even Sun Chengzong himself did not have much confidence in defending Gaoyang City at this time.

"General Zhang, our Gaoyang City is still not high enough. The Tartars attacked the city with the art of building the Yuliangdao. If you build a wall behind you, this method may not last long." Sun Chengzong watched the Qing army's Yuliangdao gradually approach the city wall with concern.

Yuliang Road is an extremely limited way to siege the city, but it can only deal with some cities with not very high walls. If it is used to attack tall passes like Shanhaiguan or strong cities like Beijing, this kind of siege cannot be adopted, because the city wall is too high. If it is to build a Yuliang Road as high as the Beijing wall, what a large project volume will be! The higher the height, the wider the base of the Yuliang Road will be, and the project volume will increase in geometric multiples.

However, because of the city specifications of Gaoyang County, a small county town could not be built as high as the walls of the capital, nor could it be higher than the city of the capital. Therefore, the Qing army could build a Yuliang Road as high as the city wall to approach.

"Release a distress signal after it's dark!" Zhang Shiwen was unsure, so he ordered Ye Busu to release a fireworks and rocket signal.

"Bang, bang, bang" With the sound of three fireworks and rockets exploded, three red, green and yellow fireworks exploded in the night sky.

After about half a cup of tea, three gorgeous fireworks bloomed again in the night sky.

The Qing army attacked Gaoyang, and Li Guodong was in the event nearby. When he saw three red, green and yellow fireworks released, those who didn't want to collect the night understood that this was Gaoyang's emergency signal.

In Changping, the Ming army camp, a man with two horses, one horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-drawn horse-d

"Gaoyang is in emergency!" The man who did not accept the central army tent that Ye Bugu entered Li Guodong immediately knelt on one knee and bowed to report Gao Yang's emergency military information.

Li Guodong was shocked: "How could Gao Yang be in a hurry? The city I helped Sun Ge Lao repair it is more than enough to block Jiannu for two or three months! Is he in a hurry in just half a month?"

That night, he replied: "Jiannu built Yuliang Road to attack the city, but Zhang Qianhu felt that it could not be cracked, so he sent an emergency signal."

Li Guodong sighed in disappointment: "Zhang Shiwen, Zhang Shiwen, my expectations for you are still too high! You don't know how to break the Yuliang Dao. If you had known, you should have let Wang Quan or Han Dashan guard Gaoyang at the beginning."

Now that things have come to this point, it is too late to blame Ma Su again. The most urgent task now is not to let Zhang Shiwen really become Ma Su, but also to rescue Sun Chengzong and the people of Gaoyang City.

Li Guodong knew that it was impossible to send troops to rescue Gao Yang by his own efforts. This matter needs to be reported to Chen Xinjia and then asked Chen Xinjia to report to the court. If the court sends reinforcements to Gao Yang together, there will be a way to rescue Gao Yang's siege.

Chen Xinjia learned about Gao Yang's urgent matter and was very anxious: "Ge Lao Sun is a former court master and a hero of the Ming Dynasty. How can he make mistakes?"

The memorial requesting the court to send troops to rescue Gao Yang was soon delivered to the capital, and Emperor Chongzhen immediately summoned Yang Sichang.

"Yang Aiqing, Jiannu has been besieging Gaoyang for more than half a month. Sun Ge Lao is in danger. What are the good strategies for Yang Aiqing to defeat the enemy?" asked Emperor Chongzhen.

Sun Chengzong was indeed highly respected. During the Tianqi period, both the Donglin Party and the Eunuch Party were very important, and even Wei Zhongxian did not dare to touch him.

Although Yang Sichang had poor personal ethics, he also respected Sun Chengzong, so Yang Sichang replied: "Your Majesty, the court should send troops to relieve Gaoyang's siege! Jiannu relied on the strength of the cavalry and came and went like the wind, so it was difficult for our army to fight against Jiannu. Now Jiannu besieged Gaoyang is a good opportunity for our army to fight against Jiannu!"

Emperor Chongzhen said worriedly: "But our army faces Jiannu, more defeats, less victory, and Eunuch Gao is going to station in the capital again. The chief of the king's army, who should be sent to save Gaoyang?"

Yang Sichang thought for a moment and said, "In our army, those who dare to go out of the city to fight with Jiannu, besides the Guanning Iron Cavalry, are Li Guodong's elite cavalry. Your Majesty, please order Wu Sangui, Cao Bianjiao and Li Guodong to join forces to Gaoyang to rescue Gaoyang's siege."

"What should I do if the Guanning Iron Cavalry leaves the capital? "

"It's okay, Guanning Iron Cavalry is a cavalry, good at fighting in the Lang, short of defending the city, and can save Gaoyang's siege. If you have to worry about the capital, Chen Xinjia will leave Changping and settle in the capital."

"Changping is the location of the imperial tomb, and there is no loss."

"With Lu Jiutai stationed in Changping, you can rest assured."

Chongzhen sighed: "Eunuch Gao's defeat in Wanping is because Lu Jiutai is timid and avoiding the war. If Jiannu came to attack, could he defend Changping?"
Chapter completed!