The Tang army of Hexi annihilated the Hui army in Yunzhou, and the news of exterminating the Yuan family made the Hui Hui longevity Tianqin Khan furious, which was related to the major interests of the Hui Hui, and the Hui nobles asked to send troops to plunder Taiyuan to deter the people of the Southern Dynasties.

The prime minister was about forty years of age, of medium and slightly thin build, with pale and bloodless skin, and he wore a hat with muddy fur on his head, armor, and a long sword at his waist, and he looked imposing.

In fact, he has half Sogdian blood, and his father was a famous Sogdian merchant who had been deeply involved in the steppe for 30 years, married a Hui noblewoman, and gave birth to a son who is today's prime minister, Chixin.

With a wave of the Red Heart War Sword, the 30,000 Iron Horsemen launched, and the iron hooves of the war horses struck the ground, stirring up rolling yellow dust, and the dust gathered together, covering the sky and the sun, and killing towards Cloud City........

At the head of the city, 10,000 soldiers stretched out their bows and arrows, and six large trebuchets also creaked and opened their throwing rods, and the Hexi army was already in full array.

But the 30,000 iron cavalry stopped advancing when they were still four hundred steps away from the city wall, and they knew very well that the Tang army's bows and crossbows were powerful, and if they went any further, they would die in vain.

There was no moat in the city of clouds, and a dry ditch was dug under the high suspension bridge, and at this time, dozens of cavalry rushed to the city, throwing iron hooks in their hands, and one by one the iron hooks flew out, just hooking the two iron chains, and hundreds of cavalry supported the past, pulling the rope together, and the iron chains creaked and shook violently.

At the head of the city, thousands of Tang soldiers were just about to raise their crossbows to shoot, but they were stopped by Guo Song, "Don't shoot, let them pull!" ”

At the front end of the drawbridge, an iron ring was fastened on it, and two thick iron chains were connected to the two huge winches on the city wall.

The only weakness of the suspension bridge is the iron ring that holds the wooden sign, and under the strong pull of hundreds of people and horses, the iron ring begins to deform, and finally only hears 'Collapse!'" With a loud bang, the iron ring broke at the interface, two iron chains flew high, and the heavy suspension bridge fell with a bang, smashing heavily on the trench, and the 30,000 Hui army suddenly burst into cheers.

With a wave of his hand, the Hui army dodged away like chopping waves, revealing a large road, only to see a hundred soldiers walking up quickly with a thick battering ram, and soldiers on both sides holding high shields to protect them, they were like a huge centipede, running towards the city gate.

"Fire oil ready!"

Guo Song gave an order, a jar of fire oil has been ready, at this time, the drums in the Hui army are loud, hundreds of soldiers holding siege rams to the city gate, just when they are close to the city gate, more than 100 thin-skinned clay pots are thrown down on the city head, the clay pots are broken, the black fire oil flows all over the enemy's body, flowing in all directions, and dozens of torches are thrown down.

The Hui soldiers burned to the ground with a bang, and the flames spread rapidly, and the entire drawbridge also burned.

The soldiers under the city screamed miserably, and they were afraid to turn around and run away with their bodies on fire, and the siege ram also fell to the ground, at this time, the soldiers of the Hexi Army on the city fired arrows randomly, and the soldiers under the city were shot by arrows, either burned to death by fire, or were shot by arrows, and fell in the flames.

The red heart does not change its color, these three hundred soldiers who crashed into the city are all death row prisoners, and they can be free if they break the door open, and similarly, it is their fate to die under the city.

Chi Xin watched hundreds of people struggle and die in the flames without pity, and he now knew that the soldiers of the Tang Army were using fire to defend the city, which was a bit troublesome.

Chi Xin quickly lost interest in Yunzhong County, and their goal was Taiyuan City, and he shouted: "Continue south!" ”

The 30,000 cavalry bypassed Yunzhong County and continued to gallop southward, stirring up billowing yellow dust and gradually moving away.

Guo Song immediately ordered: "Order the army to assemble!" ”

An hour later, Guo Song led an army of 30,000 to leave Yunzhong County and head south.

..........

The 30,000 Hui army marched all the way south, and entered Shuozhou that night, the Tang army had already prepared, and the villages along the way were empty, everything was removed, and in the afternoon, they arrived in Mayi County.

Chi Xin stopped the army and sent dozens of soldiers into the city to investigate, he knew the methods of the Tang army, since the Tang army was good at using fire, then the night in the city would definitely encounter enemy fire.

After a short time, the spies came out and reported: "The county town is empty, and the grain has been taken away." ”

Chi Xin was a little uneasy in his heart, the Tang army was obviously very well prepared, and the dry food they brought could not support it for a few days, did they have to return in vain?

"Keep going south!"

Chixin ordered to continue south, his next target was Shanyang County, Shanyang is Shuozhou Prefecture, Yanbei is a county with a large population, most of the people of Yunzhou have moved to Shanyang County, with a population of nearly 300,000, and the Hexi Army has stationed 5,000 troops here.

Although there are not many troops, it is not easy to capture Shanyang County, the biggest advantage of Shanyang County is that the terrain is dangerous, Shanyang County is located in a high place, one side is a slope, and the terrain is steep on three sides, although the people's usual life is not very convenient, in order to ensure safety, everyone would rather be inconvenient.

Chixin looked at Shanyang City from afar, and couldn't help sighing, Mo said that they didn't carry siege ladders, even if they brought siege ladders, they couldn't attack this county.

"Pass my order, the army will rest on the spot, and set off early tomorrow morning!"

The 30,000 cavalry camped at the Mayi River, where there was a large meadow covered with tender green grass, and the horses were not short of food, but the food of the Hui soldiers lasted three or four days at most, and only some dry cakes and dried meat remained.

Chixin was really a little worried, whether their food could support to the end, of course, the food was really cut off and the horses could be killed, but until the mountains and rivers were exhausted, the steppe cavalry would never kill their brothers to satisfy their hunger.

Early the next morning, the army continued to move south, at noon, the army arrived at Lou Fan Pass, Lou Fan Pass is surrounded by high mountains and cliffs on both sides, the valley mouth is initially wide for dozens of miles, but it is narrower and narrower as it goes, and finally when it is wide to two miles, a strong and tall pass city stands in front of you.

Since it is called Guancheng, there is the existence of the city, the east and west sides are cliffs, there is a city wall in the north and south, the distance is about one mile, this one mile long, two miles wide Guancheng built a lot of buildings, soldiers' barracks, warehouses, guard towers, water houses and so on.

Lou Fu Pass can accommodate up to 3,000 defenders, and at this time there are 3,000 defenders in the pass, led by the Zhonglang general Su Zhen, Su Zhen is the descendant of the famous general Su Dingfang in the early Tang Dynasty, skilled in bow and horse, strong in martial arts, served as a Lang general in the Fengzhou army, after seizing Hedong, was promoted by Guo Song to Zhonglang General, led the army to guard Lou Fu Pass.

There are also two super-large trebuchets on the city, which are transported from Taiyuan City, directly installed on the ground, the long throwing rod is up to eight zhang, the trebuchet is as high as four zhang, the base covers an area of one acre, the size is huge, and it needs a hundred people to operate.

These two super trebuchets can throw a large iron fire mine weighing 250 catties to a distance of 300 steps, and the deterrent effect is extremely strong.

Guo Song expected that the Hui army would eventually have to attack Lou Fu Pass, and if they couldn't capture Lou Fu Pass, they would not be able to go to Taiyuan, so he put the two most powerful trebuchets in Lou Fu Pass.

The commander of the Hui Hui immediately ordered the soldiers to cut down trees and build a simple siege ladder, Yunzhong County could not be fought, and Shanyang County could be bypassed, but Lou Fuguan could not bypass him, unless he directly gave up attacking Taiyuan and returned to Mobei, but he was ridiculed and not said, and he could not explain to the Khan.

The simple siege ladder made by the Uighurs is indeed simple, find two straight pine trees as the left and right main beams, and then use a belt to tie up the thick wooden sticks tightly on the main beam, resulting in a ladder, even the nails are omitted.

By dawn, the Hui army had made more than 300 improvised siege ladders, and the prime minister sent 10,000 troops to attack Guancheng.

'Boom! Boom! Boom! ’

In the fierce sound of war drums, the 10,000 Hui army rushed towards the fortress a mile away.

At the head of the city, Zhonglang shouted Su Zhen and ordered: "Trebuchets prepare, crossbowmen prepare!" ”

A thousand crossbowmen were ready to fight, hundreds of people pushed the winch, the throwing rods of the two super trebuchets were pressed down, and several soldiers put two large iron fire mines weighing two hundred and fifty pounds into spoon-like throwing pockets.

At this time, the army of 10,000 Hui was surging like a tidal wave, and they had already rushed into the 300-step line.

"Ignition!" Su Zhen gave the order.

Two soldiers lit the fire rope with a fire breaker, and when the flames sneered to the red line, they shouted, "Fire!" ”

'Bang! Boom! Two large iron thunderbolts rose into the air, swept over the walls, and smashed over the heads of the enemy three hundred paces outside the city.

When they were still three feet above the heads of the Hui army, two iron fire thunderbolts exploded almost simultaneously.