The officers and men of the Xiliang Army marched the formation to a certain position and did not advance.

Further on, it is almost within the range of the catapult, and the shield wall of large shields can block the rain of arrows, but it cannot stop the flying stones.

At this time, due to the limited technology, the range of the catapult was lower than that of the strong archers, and it was not until the battle of Yuan Shao and Cao Cao's Guandu that Cao Cao's adviser Liu Ye improved the catapult, and its range was greatly improved, exceeding the range of the bow and arrow.

After stabilizing the formation, Zhang Liao ordered the archers in the army formation to slowly step forward and wait for the opportunity to shoot the defenders on the city wall.

Although the previous position can also be shot, but the ground archers shoot the enemy on the city wall is a back attack, and there is no advantage, only after the distance is reduced to a certain distance, the gap between the city and the city will not be so obvious.

The siege is a battle of attrition, and the siege troops on the ground will not achieve any results all at once, usually slowly consume the opponent's strength, and then look for opportunities to break through.

Zhang Liao asked his archers to wait for an opportunity to shoot the defenders on the city wall, in order to eat away at the opponent little by little and consume the opponent's strength. Although the damage will not be much, it can be accumulated slowly.

Seeing that the archers had reached the designated attack position and began to attack, Zhang Liao sent a signal to the centaurs in the rear formation.

Dong Shouye saw that Zhang Liao had stabilized the formation and sent out the signal, so he ordered: "Let Jing Lang step forward, maintain a reasonable position, give full play to the range advantage of the big crossbow, and suppress the archers on the city wall." ”

After the order was given, a group of soldiers pushed ten well carriages and slowly moved forward.

According to legend, this well was invented by Mozi during the Warring States Period, and it is a siege weapon that can attack the enemy army on the city wall. During the siege, he condescendingly moved and strafed the defenders on the local city wall, and the attack range was Aurora, and the strike ability was super strong.

Dong Shouye ordered people to build these wells about twenty-five meters high, a few meters higher than the city wall of Chang'an City, is specially made for the attack on Chang'an City, the upper part is made of wood, the lower part is equipped with a eye wheel, but the movement speed is relatively slow, it is not very convenient to use.

As soon as the well is reached, there are people around it to immediately step forward to protect it, and at the same time let the warriors climb up the well and prepare to attack the enemy.

In order to better attack the enemy, Dong Shouye specially ordered people to prepare a large yellow crossbow as the main battle weapon on the well, and equipped it with a certain strong bow and a crossbow.

After the preparation was completed, Zhang Liao gave an order, and the strong crossbowmen on the well and the strong archers on the ground cooperated, and together launched a rapid fire at the enemy's city wall.

On the city wall, people were constantly shot by the rain of arrows, and suddenly there were bursts of screams, and the defenders on the city wall immediately leaned back, hid behind the arrow stacks, and poked their heads out from time to time, opened their bows and arrows, and counterattacked. Even so, there were still many people on the city wall who were shot by the rain of arrows from the Xiliang army.

The Xiliang army under the city was like a turtle shell with a large shield, and it was difficult to tear through its defenses in a short time with bows and arrows alone; Keep a relatively safe distance between the well and the defenders on the city wall, most of the arrows can not be shot on the well wall, even if some people have a long range, but because it is a wooden structure, and the structure is relatively dense, the protection of the arrow stack can be much stronger, the arrows shot by the defenders on the city wall are either not shot, or they are directly nailed to the surface of the well wall, and they cannot cause any effective damage to the Xiliang soldiers inside it.

After many attempts, the defenders on the city wall confirmed that their men had no way to take this well, but were gradually suppressed by the well.

Due to the fierce rain of arrows from the Xiliang army, the defenders on the city wall could only choose to take refuge temporarily.

At this moment, due to the preservation of the well, the crossbowmen of the Xiliang army had a condescending advantage, and the archers on the city wall were suppressed by the rain of arrows in the sky, and they could not organize an effective counterattack at all.

For a while, there were no arrows on the city wall, and when Dong Shouye saw this, he ordered: "Captain Li Meng, immediately arrange for people to use baggage trucks to transport sand and soil to fill the moat." ”

After Li Meng received the order, he led a team of soldiers and drivers to quickly approach the moat along the passage reserved by Zhang Liao, and then threw the sand and gravel dust on the car in the moat.

A steady stream of baggage wagons, running back and forth, carrying truckloads of sand and gravel to fill the moat, will soon fill in several passages.

Once the passage is formed, the soldiers of the Xiliang Army can directly kill the city and climb the city.

After a period of silence, the defenders on the city wall immediately reported the situation to Wang Yun and asked him to decide.

Wang Yun, the old boy, was sad when he heard this, and kept walking back and forth in the same place, and after a period of hard thinking and meditation, he finally came up with a way to deal with it.

I saw that the old boy stretched out his hand and touched his beard quite complacently, and then said: "The well is a wooden structure, and it must be afraid of fire, so the soldiers can prepare rockets to ignite the well wall." After finishing speaking, he whispered the specific operation method.

When the general was overjoyed, he went down and gathered some oil, wrapped the arrows in cloth, soaked them in the oil for a while, and then took them out and used them.

After the concoction was successful, this batch of strategic materials was immediately transported to the city wall.

As soon as the defenders got their hands on their new weapons, they lit the arrows, which had been wrapped in cloth and soaked in oil, and shot them at the well.

After the sound of a whistling wind, many rockets hit the well, but found that the effect was not ideal.

After many rockets hit the wells, they did not burn as soon as they had imagined, but instead the flames became smaller, and some even had no flames, only a puff of unpleasant green smoke.

Seeing this, the soldiers of the Xiliang Army laughed loudly at the defenders, and became even more arrogant.

If these defenders had gotten closer, they would have noticed that some of the main fronts of these wells, as well as some of the easy ones to be shot, were covered by a layer of objects.

This thing is wet cowhide, and this thing often works wonders against fire.

During the Spring and Autumn Period and the Warring States Period, there were often wells on the battlefield during the siege or confrontation, and all countries also had certain experience in this, and the wells were afraid of fire, which was the consensus reached by everyone.

Since the revival of Guangwu Zhongxing, Jing Yan has rarely been used, so it has gradually faded out of people's field of vision.

Of course, due to the long period of time, the creation and coping method of this well has only become a legend, but fortunately, Wang Yun knows it.

But what Wang Yun didn't expect was that Dong Shouye, as a traverser, also knew something about Jing Yan, especially its flaws. Therefore, when arranging combat missions, Dong Shouye asked the soldiers to cover the well with a layer of wet cowhide before the battle to prevent fire attacks.

Although everyone didn't know a little about Dong Shouye's actions, they had to implement it without hesitation, who called Dong Shouye their boss.

Fortunately for them, Dong Shouye has always been very accurate.