The passage between Shiyan Pass and Tumen Pass is relatively narrow, so it is unlikely that all the forces will be deployed in the front. And in this kind of battle, it is naturally the most appropriate not to break the army as the main attack. However, the most important thing is that it is necessary to take down Shiyan Pass first. Otherwise, there is no need to talk about the earthen gate gate at the back.

Yang Lu, who received the news, had already rushed from Zhending County to Shiyan Pass. Here, because it was on the front line of the confrontation with the Tang Army, as many troops were deployed on the Guancheng as much as possible, reaching more than 2,000 people.

Then in the Tumen Pass, the soldiers and horses are similar, and there are nearly 5,000 people in the two passes. Mainly because of the scale of this city, otherwise, the Yan army would definitely let as many troops and horses here as possible.

But in addition to these 5,000 soldiers and horses, in the area east of Tumen Pass, which has become open, a large number of soldiers and horses are deployed, adding up to a total of 20,000 people.

And this part of the soldiers and horses is the last force to block the way of the Tang army, after coming out of the Tumen Pass, Li Xin and they have to face these people.

Because Shiyan Pass and Tumen Pass are both located in dangerous places, they have a great advantage for the Yan army guarding this place. Yang Lu and Murong Trai basically have the same idea, that is, to rely on these two places to defend to the death. After the Tang army has been unable to take it for a long time, it will automatically return to the west of Taihang.

Therefore, the first thing Yang Lu did after arriving at Shiyan Pass was to inspect the city. However, when he saw the Tang Army outside the city, his heart became heavier and heavier.

"The soldiers are in danger! Looking at the formation of the Tang Army, it is by no means easy to match, but I don't know who the other party's leading generals are! Looking at it like this, it's not like an ordinary soldier! "Yang Lu has never been on the battlefield to confront the Tang Army before, so he didn't know that the Tang Army on the other side was dressed as an unbroken army and a flying dragon horse.

By now, many people know that Li Xin has two pro-armies by his side, one is called the cavalry of the Flying Dragoon, and the other is called the foot pawn of the Unbroken Army. But because it didn't appear in the Great War in the past, and even if it did, it was basically a flash in the pan and quickly disappeared again.

Therefore, everyone basically only hears its name but does not know its shape. Otherwise, when you see Tang Jun outside at this moment, you should know its origin, and you should also think that it is Li Xin who has arrived. After all, isn't the so-called pro-army always by the monarch's side!

"It has been more than three hours since the Tang army arrived outside the pass, and although the formation is neat, it has not launched an attack. Moreover, it seems that a lot of people are in front of the battle~ Something, I don't know if it's a siege machine, but it doesn't look like it! The general of the Yan Army, who was in charge of guarding this pass, said to Yang Lu.

"Oh? Are you saying that the Tang Army brought a large number of siege equipment with it on this trip? Wouldn't that be a great threat to us? Hearing this, Yang Lu couldn't help but lift his heart.

"Rest assured, Shiyan Pass and Tumen Pass are both located in dangerous places, and they are both made of solid stones! In front of this pass, the role of ordinary siege equipment is not very great, as long as we can't hold on, it is not easy for the Tang army to capture this place! ”

"That's good! However, the Tang Army's reputation for being good at fighting is well-known in all directions, so we still have to be careful! Hearing his words, Yang Lu felt a little relieved. However, there is still a special advice.

"Yes, the last general must be careful!" The general hurriedly replied.

Just as Yang Lu was inspecting the city, among the Tang troops outside the city, Li Xin was discussing the action with Deng Qiang, Zhang Hao and others. Because Li Xin didn't plan to stay here for long, or he was very sure that he would be able to quickly take Shiyan Pass.

Therefore, after the army arrived, it did not even set up a camp! Only a few large tents were set up in the middle of the army to serve as temporary meeting places.

"How's the preparation?" Li Xin glanced at the generals beside him and asked.

"Your Highness, all the equipment has been combined, and now, we are waiting for your order!" Deng Qiang replied.

"Very well, give the order to go down and attack immediately. Let's take Shiyan Pass before it gets dark! Li Xin nodded, and then ordered.

"The last general obeys!" Deng Qiang and other generals responded in unison.

Soon, the military order reached the front of the Tang army.

At this time, the front of the Tang army was different from before, because there were more machines one by one.

These things looked like two-wheeled carts with iron pipes about six feet long and thicker than an arm. And at the end of these tubes, there are also horizontal bar pushrods.

Next to each cart, there were a few soldiers who did not break the army, and behind them, not far away, there were black pottery urns, which seemed to contain something.

With the issuance of the military order, the Tang Army soldiers, who were originally standing next to the cart, began to get busy at this time.

I saw a few of them working together, first extending the front end of the iron pipe into the pottery urn, and then quickly pulling the horizontal bar push rod behind the iron pipe.

It didn't take long for them to adjust the position of these iron pipes, and their front ends were aligned in the direction of Shiyan Pass, which was about 200 meters away!

This wave of operations of the Tang army suddenly made the Yan army on the head of the city stupid, from small soldiers to generals, no one knew what kind of medicine was sold in the gourd of the Tang army. Since the Tang army did not come forward to attack, they could only watch in a daze.

"Whoa!" And when they were stunned, they only heard a soft sound, and then, from the front of the Tang army on the opposite side of the city, black water suddenly flew out of the small cars, and instantly descended on the city.

This black thing fell between the soldiers of the Yan Army, some of them fell on their bodies, and more of them fell on the bricks of the ground. The soldiers of the Yan Army were startled at first, and then they found that this kind of thing did not seem to have been seen.

At first, they thought it was some venom or something, but after they looked at it, they found that this thing had nothing special except for an unpleasant smell and a certain viscosity~ consistency.

But for some reason, the soldiers of the Yan Army had a faint feeling in their hearts.

"Put!" At this time, in front of the Tang army, there was a sudden angry shout.

The next moment, the soldiers of the Yan Army at the head of the city saw that in the formation of the Tang Army, there were suddenly dots of fire. Then the flames flew towards the city.

"It's not good, it's oil! Be careful, everyone! After seeing this scene, the generals of the Yan army at the head of the city finally reacted, and hurriedly reminded loudly.

As soon as the others heard this, they immediately began to panic, and everyone hurriedly began to take off their clothes, trying to stay away from the black liquid as much as possible. However, at this time, the Tang Army's rockets had already fallen from the sky and fell on the city.

Not only on the city, but also on the city gate, which has long been filled with this liquid. The Don Army seemed to be aiming there, and some of the rockets were heading towards the gate.

When the first spark fell, a flame suddenly burst out of the entire Guancheng, and then quickly spread to the surroundings. Almost in just a few breaths, the entire Guancheng was completely wrapped in flames.

"Fire, fire, fire......!"

"Run, run......!"

"What's going on, why can't it be extinguished? It's not good, the more it burns, the more it burns.....! ”

"Help.... Help me..... Don't leave me behind! ”

......

The city was immediately in chaos, and the soldiers of the Yan army scattered in the flames, and no one had the heart to care about the situation outside the city anymore. Everyone rushed to the wolves, just thinking about escaping from the fire as soon as possible and extinguishing the flames on their bodies as soon as possible.

However, many people fell directly in the process, and most of the remaining people, when they finally ran under the wall and took water to extinguish the fire, were stunned to find that the flame was not only not extinguished when exposed to water, but burned more and more.

Many people were rolling back and forth in the mud and sand on the ground, which made the fire on their bodies smaller. But many more fell directly in the flames.

The entire Shiyan Pass was in chaos, and at this moment, the door that had been burning for a while in the flames collapsed to the ground.

"Kill!" Seeing this scene, Zhang Hao, who was outside the city, was already impatient to wait, so he immediately waved his knife and shouted angrily, and then took the lead in killing the city.

Compared with the panic of the Yan soldiers, the attacking Tang soldiers were already prepared. The soldier who ran at the front opened the cloth bag on his body as he ran, and then poured out yellow sand directly from it, covering the ground.

The soldiers behind stepped on these yellow sand and rushed straight into the city. Almost effortlessly, Shi Yanguan was taken down.

Li Xin, who came later, glanced around after entering the customs, sighed and said, "Help them extinguish all the fire on their bodies!" If there is still hope, send it to be healed immediately! The others immediately rushed to Tumen Pass! ”

Water and fire are ruthless, Li Xin himself doesn't know when he became so cold-blooded about life and death. Maybe it's because after coming to this world, I'm used to seeing life and death scenes, so I become so indifferent!

Thinking about his current self, it seems that he is no different from Murong Trai before! It is said that one will succeed and ten thousand bones will wither, which has been the case since ancient times, and Li Xin cannot jump out of this rule.

From leaving the mountain to taking Shiyan Pass, it only took him a few hours! I believe that the Tumen Pass after that should not be able to stop itself for long.