As soon as he went up to the city tower, Sun Xi felt that the attack of the Tang army seemed to be very fierce tonight. Although he wasn't here at the time of the last Battle of Tiger Prison Pass, based on his past experience alone, he knew that this siege battle didn't seem to be supposed to be directly used with all his strength at the beginning.

It feels like Tang Jun has decided to take down this tiger prison tonight.

Fortunately, there were more defenders in the pass, and it would not hurt to deal with the attack of the Tang army at this time. However, if this continues, I am afraid that the progress of the war will not go very smoothly. While supervising the battle above the city, Sun Xi thought about how to counterattack the Tang army.

The best result, of course, was to inflict heavy casualties on the Tang army, so that the Tang army had to retreat from the city and did not dare to attack the city again. But no matter how he thought about it, he found an effective way for a while.

When the war was in full swing, on the quiet surface of the Yellow River, the water waves were still there. On the bank of the river east of Tiger Pass, there are soldiers of the Yan Army patrolling from time to time.

But because the fighting was raging on the castle, there were fewer of these patrolling soldiers, because many of them were sent to participate in the battle.

Under such moonlight, on the bank of the river about two miles away from Guancheng, under the rippling water, several heads suddenly slowly appeared.

After these people quietly floated out of the water, they first looked at the shore for a while, and only after seeing the situation on the shore clearly, did they quickly get ashore from the water.

After going ashore, several people immediately separated, guarding several directions on the shore, separated from each other by about dozens of meters. Then, one of them turned and whistled towards the water, apparently signaling.

Because just after this whistle, more figures soon appeared in the river behind him. Like them, they quickly climbed the riverbank, and then everyone gathered together and hid in relative seclusion.

Although the number of these people is not large, and the total number is only about 100, they are dressed differently from ordinary people. Everyone was dressed in black, and it was almost impossible to see in the dark night.

Fortunately, the weather was hot at this time, otherwise, after floating in the river for a long time, I am afraid that the whole person would have frozen to death.

"According to the previous plan, let's rush to the east gate of the Tiger Prison Pass immediately. Remember, no one can let the enemy discover until they have entered the level. You should inquire about the situation first, especially to get some military uniforms of the Yan army. When we're all replaced, we'll go about it. A man in the lead, after quietly observing the surrounding situation, said to the people beside him.

"Yes!" Everyone whispered in response.

Soon, the group began to move in the direction of the Tiger Prison Pass.

In the process, the scouts who were in charge of the forward reconnaissance eliminated the Yan soldiers who were patrolling, thus changing their clothes.

In this way, by the time they arrived to the east of Tiger Prison Pass, basically everyone had changed their clothes. Then, the group walked towards the east gate of the Tiger Prison Pass.

Although this tiger prison is in the middle of a great war, it is only closed to the west gate, and the east gate will not be closed even in wartime. After all, from the side of the city, it is necessary to mobilize materials and troops from time to time to support the city.

While it may be safer to close the gates, the problem is that it will have a big impact on the defense of the castle. Especially in case of unstoppable situation, the soldiers defending the city must leave a way to survive!

It just so happened that the opening of the city gate gave these Tang soldiers a good opportunity.

Chen Kang's strategy is actually very simple, to put it bluntly, it is to let people use the Yellow River waterway to bypass the Tiger Prison Pass from the side to the east. As long as you can break into the pass, with the cooperation of the two sides, it should not be difficult to take this pass.

Of course, the Yellow River is not an ordinary river, so this difficulty is still not ordinary. Chen Kang found many soldiers in the army who were very good at water, and first sent them to the opposite river far from the Tiger Prison Pass in small boats.

Then, these people jumped into the water and quietly dived to the shore not far from the foot of the Tiger Prison Pass. Since the Yan army was always on guard against the river, it was especially easy to spot if there was a boat. But people swim through the water, so it's not easy to spot.

After all, both in the dark night and in the water of the Yellow River, it is the best cover for this group of elite soldiers. What's more, in order to respond to them, the west of the city will also send a large number of soldiers to attack the city, attracting the attraction of the Yan army!

Everything was just as Chen Kang thought, after this group of elite soldiers who were familiar with water changed into the military uniforms of the Yan Army, they came all the way to the gate of the Tiger Prison Guandong City.

When the Yan soldiers guarding here saw them coming, they not only did not feel strange at all, but looked very happy.

"Hurry up, the battle is raging on the city, you are here at the right time, hurry up and help!" The young general in charge of guarding the east gate said to them.

"Don't worry, with us, there is absolutely no problem with this tiger prison!" The man in the lead smiled and replied.

"You have a lot of faith! I can tell you, it's the Tang Army who is attacking the city, and those people are amazing! I heard that they were good at using big knives, and the whole person was cut in two when they slashed down. There are also some people who are marksmen, and that is a shot at a time. Be careful! Anyway, I've been playing the drums in my heart, and I don't know if I can hold it! It seemed that seeing that he was too confident, the young general couldn't help but whisper to him.

"Oh? Are they really that powerful? Have you ever fought them? Hearing this, the Tang Army general couldn't help but ask.

"Of course, can this be fake? I was defending the city in Luoyang before, and I fought several battles with the Tang army, but I was defeated and returned, isn't this powerful? If it weren't great, we wouldn't have to defend this tiger prison now! Seeing that he had the intention of questioning himself, the young general Yan Jun couldn't help but retort.

"Well, I'll have to be careful later!" Seeing his appearance, the Tang army general didn't ask any more questions, nodded and walked towards the pass.

The span between the north and south of the Tiger Pass is larger, but the span from east to west is smaller. Although there is a lot of space in the castle, it is also a little chaotic at this time.

The soldiers of the Yan Army, who were constantly coming and going, carried all kinds of arrows, stones, rolling wood and hot oil stored in the pass to the top of the city. There are also many people recruited from nearby to help, so the whole city seems to be a little crowded.

The door on the west side was closed, and in addition to being latched up by the latch, a lot of log roofs were added~ to live. Fortunately, this is not directly blocked in the back, otherwise, it may not be easy to open it again.

I'm afraid that this Yan army is also for the sake of just in case, and I'm afraid that I will have to go out of Kansai when I will go. That's why the road wasn't blocked. Unless it is really a dead end, there is really no way, otherwise, it will not use this kind of infant city self-defense method.

Even so, there were hundreds of people guarding the gate. After all, when the Tang army was attacking outside, not only did it have a siege ladder to attack the head of the city, but the wooden battering ram was also constantly hitting the gate.

"See? Let's act quickly later, and according to the previous discussion, let's go our separate ways. Some of them went directly to eliminate the Yan army guarding the gate, while others went directly to open the city gate. After taking a look, the general of the Tang Army said to the two deputies beside him.

"Don't worry, the plan is already well understood!" The two deputies answered quietly.

"Very well, let's do it!" The general of the Tang Army nodded, and then gave an order.

Then the group walked towards the gate.

"Hey, you guys, hurry up and help, and bring these arrows! Why are you running over there if you have nothing to do? The Yan army officials who were in charge of material dispatch in the customs saw this large team of more than 100 people, and when they were thinking about ordering them to work, they saw that they actually walked towards the gate empty-handed, and hurriedly shouted.

But Tang Junli ignored him and walked straight over, and not long after, the group came to the gate.

"What are you doing here? Why don't you go to the city to defend against the enemy? The general of the Yan Army who was guarding the gate couldn't help but be stunned for a moment when he saw this large group of people coming, and asked.

"Your Excellency has an order, and we are ordered to come and replace you!"

"Replacement? That's it! Do you have military orders? Hearing this, these Yan soldiers couldn't help but relax a lot.

"The military order is here, take a look!" Tang Jiang nodded, as if he wanted to take something from his body.

And just as the Yan army general was waiting, Tang General suddenly swung out a knife, and slashed the Yan army general to death on the spot. And the other Tang Army soldiers who had already prepared also immediately took action at this time.

With only three or two efforts, more than half of the unsuspecting Yan soldiers in front of him were killed. The remaining half of the people had already reacted at this time, and hurriedly waved their knives to resist, and at the same time, shouted for help.

"The Tang Army has come in! Come and help! The remaining gatekeepers shouted.

The movement before closing immediately attracted the attention of everyone in the gate. After hearing this shout again, everyone understood.

"It's not good, if you close the door, the tiger prison will not be secured! Quickly dispatch troops to the rescue! Sun Xi, who was supervising the battle at the head of the city, also heard the cry for help below at this time, and his face changed greatly, and he hurriedly explained to the generals beside him.