The war drums rumbled across the earth like dull thunder, and the huge phalanx four miles under Chang'an City began to shake, and at first glance, it seemed as if the entire plain was shaking!

The shouting of killing was earth-shattering, and the soldiers of the Northwest Army swept towards Chang'an City in a tide.

Ma Chao did not wear his conspicuous brocade robe and armor, but wore a lieutenant service similar to Zhang Xiu, standing side by side with Zhang Xiu in the Chinese army, and whispered: "Let's start......."

When Li Dao, Guo Yan, Fan Chou, and Zhang Ji heard this, they all hugged their fists to receive their orders, and the four herald flags shuttled back and forth in the military formation: after two days of fighting, these Xiliang veterans finally regained a trace of their previous iron-blooded style.

Holding their shields aloft, they rushed down the city with the robes around them. All of these movements, after hard training, have become part of their natural reactions. And with a good and competent command, they will be able to exert immeasurable combat power!

Arrows are still being fired on Chang'an City, but compared with the previous few times, they are surprisingly few, although they shoot down a few people, but for the siege army that is surging like a tide, it is tantamount to a drop in the bucket, and it is of no help at all.

At the same time, Xu Rong stood on the city and commanded those forbidden troops and county soldiers to throw fire oil into the city.

The oil pot is filled with oil in a clay pot, then wrapped in hay, lit the hay, and thrown down to the crowded area under the city.

Those oil canisters fell in the crowd, in the open space, the clay pots were shattered, and the flames suddenly burned, and the smoke billowed outside Chang'an City.

The power of fire oil is much more powerful than that of bows and arrows. smashed on the Northwest soldiers, and immediately turned the opponent into a burning man, howling and rolling on the battlefield.

Ma Chao looked at it from afar, and there was no trace of pity in his heart. As if he was playing a live-action strategy game, his face was cold, thinking about how many arrows, fire oil, boiling water, rolling wood, stones, and crossbow arrows that destroyed mountains and so on in Chang'an City.

This siege was carried out by Ma Chao after the Northwest Army rested for two days. On the one hand, even under the two counties of Jingzhao and Fengyi, the prestige of the Northwest Army has been in full swing, and many thieves and outcasts have speculated to join; On the other hand, the siege of Chang'an by the army also caused a certain amount of psychological pressure on Chang'an.

Of course, the main reason is that without engineering equipment, Ma Chao will not be like those generals of the Han Dynasty, let the soldiers use their lives to fill the road to the city - in the past two days, Ma Chao ordered to rush to produce a batch of siege equipment, although compared to the Ma family's siege vehicles and trebuchets, it is almost a pile of garbage, but it is better than nothing.

At this time, seeing that the oil canister had been thrown on Chang'an City, Ma Chao nodded slightly. Then, the crunching sound of the rope was piercing behind the formation, accompanied by a huge roar, and boulders rose into the air. Some of them flew into the city, while others smashed accurately on the walls, shattered human bodies and fragments of the walls shattered into mud and stone flew everywhere.

Under such a powerful stone-throwing blow, in less than a moment, the corner tower and the city gate tower in the west of Chang'an have all collapsed, and the city head is dusty and in a mess, and the sound of miserable screams is endless.

With the cover of trebuchets, the Northwest Army under the city was finally able to breathe a sigh of relief, dodge the attack of the mountain-destroying crossbows and bows and arrows on the city, and set up the cloud ladder on the head of the city. And the bulky rush car gradually pushed under the gate of Chang'an.

Xu Rong saw the northwest soldiers rushing to the city, his face was still calm, and when the rushing car had really arrived at the city gate, he shouted loudly: "Water!" ”

A pot of steaming boiling water poured down from the city, looking from a distance, it was as if a white dragon rushing out of the clouds and mist from the head of Chang'an city poured boiling water, and the northwest soldiers who couldn't dodge were drenched, and they were suddenly burned by the skin.

"Roll the wood!"

Xu Rong shouted again, and then, one by one, the trunks of the trees that needed to be hugged by the two of them smashed down from the city, and the flesh and blood of the Northwest soldiers were blurred.

Seeing this, Ma Chao in the distance couldn't help frowning: without the cover and sabotage of the Ma family's powerful trebuchet, he could only rely on human life to gamble on the outcome of a siege battle. Moreover, at present, it seems that for Xu Rong, who still has 10,000 sworn to die in his hands and drives those county soldiers, the victory of this siege battle is not great......

Sure enough, before he stopped thinking about it, Ma Chao saw that most of the rolling logs were concentrated on the rushing car. Then the soldiers of the city threw the canister of oil, and in an instant the rushing cart was reduced to a pile of burning wooden carts.

Ma Chao knew that the city gate of Chang'an was made of wooden core clad iron, which was extremely thick and strong. The fire did not burn at all. Once the iron latch is hung on the inside, even if it is smashed with a thousand pounds of boulders, it may not be able to shake a minute. In other words, as soon as the car was destroyed, the hope of breaking through the city gate and entering the city was in vain.

And even if the city gate was breached, Ma Chao also knew that this Chang'an ancient city had two inner and outer walls, and the walls on both sides formed a square-shaped open space. As soon as the outer city gate is broken, the enemy army breaks into the open space, the inner city gate falls, the ambush on the city wall rises suddenly after being blocked on all sides, the bow and crossbow beat the stone together, and the enemy army is captured like catching a turtle in the urn, this design is also called "urn city".

This means that even if the Northwest Army attacked the city wall, it would be extremely difficult to break through the urn city. Unless, like himself, he used absolute siege firepower to beat the Chang'an soldiers and did not even dare to set up an ambush in the urn city, so that he could attack Chang'an in one fell swoop.

Thinking of this, Ma Chao looked at the Chang'an city wall from afar, and saw the smoke that was occasionally raised by the rammed earth city wall broken by throwing stones, and the gravel, wood and corpses under the city wall, sighed leisurely, and sighed helplessly: "Withdraw the troops......

"Lord, we have only carried out a few tentative attacks, and this general attack has just begun, why are you ......." Guo Yan showed eyes like greedy wolves at this time, looking at it with great interest. Suddenly, hearing that Ma Chao ordered a retreat, he couldn't help but speak.

"I say, withdraw the troops!" Ma Chao turned his head and looked at Guo Yan coldly, the contempt and indifference in his eyes did not have any reservations: "Don't you understand people?!" ”

"Yes, yes...... Subordinates obeyed. Guo Yan was glared at by Ma Chao, and thought of it some time ago, when he secretly heard Ma Chao scolding him for beheading Song Yi's stupidity, he couldn't help but feel frightened, and said yes again and again.

"How?" Guo Jia couldn't help but feel a little strange when he saw Ma Chao's state, and asked: "Isn't the virtuous brother ........?" At this point, Guo Jia seemed to suddenly remember something, and when he turned around and saw Jia Xu really looking like an old god, he couldn't help but stop talking. But he sighed again in his heart: It seems that Ma Chao has already made arrangements for the attack on Chang'an.......

Bang Bang Bang!

With the sound of a gong, I remembered that after paying less than a few thousand casualties, the Northwest soldiers retreated like a tide.

"Stop the arrows, stop the arrows!"

At the head of Chang'an City, there was a burst of cheers. Xu Rong took a breath, walked behind the female wall, and leaned out to look out of the city. A small general who vaguely saw the tents of the army, after receiving a letter, seemed to show a smile on his blurred face.

Xu Rong frowned, he couldn't think of any news of value related to Raiders Chang'an. And if Ma Chao learned about Xu Rong's thoughts, he would probably laugh even more happily: the letter only mentioned that Tong Yuan had been captured by the ugly brother, and learned that Tong Yuan had notified his third disciple Zhao Yun to help the wind........

And Chang'an, but in front of Zhao Yun, an indispensable moat.