Night fell quietly, and the silent black enveloped the earth. There was peace and tranquility inside and outside the big city, like a warm land.

The guards patrolling the city tower were fighting with their eyelids up and down. Their fatigue was not faked. Since Cao Xing took over the defense of the big city fortress, he ordered everyone to be cautious and always alert to enemy attacks. No war is better than a war.

, which is very difficult for the soldiers guarding the tower to endure.

It is a major test for strength and even spirit. Even if Cao Xing specially divided them into several groups, the delay in the expected war has only tortured people's nerves, making them tense all the time. Naturally, they will be in a certain state.

Sometimes I feel sleepy, but at this time there is something I shouldn’t do.

Not just them, the few guards on the tower set up on the flat ground on the cliff were bored and quite lack of energy. Their overly focused eyes were sour and red, and they even shed tears when they blinked.

At this time, they did not notice some slight movement coming from the cliff behind them.

At first it was just some irregular and rhythmless noises, but eventually it became louder and louder. Some of the noises even disturbed the Lu Bujun guards near the tower. They listened intently for a while and found nothing. Two of them even ran away.

I checked several places but found nothing, and my companions laughed at me for being suspicious. After all, there was really no suitable hiding place around. Do you really think you would be hiding in that stone wall?

This was too far-fetched and fanciful, and the two of them looked at each other and could only shake their heads in confusion and walk away.

Not long after, the noise started again, but the noise was always controlled to a certain level as if deliberately. No one noticed anything unusual.

Then, I don’t know how long it took, when the guards on the tower began to yawn uncontrollably, the sound that seemed to be ringing all the time suddenly stopped, and finally turned into a "click" sound, as if it was the end.

symbol.

This sound finally caught the attention of the tower guards again. They regained their energy one by one. It was the two people from before who were the first to walk to the place where the noise occurred. However, before they could get closer to take a closer look, they heard "whoosh" in the air.

"Two sounds, that was the sound of sharp arrows flying through the air. Then there were two screams. "Pfft" the sharp arrows penetrated the flesh and bones, pierced their vitality, and quickly turned into two corpses and fell.

This sudden change made the surrounding guards stunned. Although they quickly woke up and prepared to take action, they were not as fast as the enemies who had been hiding in the dark and planning for a long time. Several more flying arrows flew into the air. The tower was approaching.

The Lu Bu army guards harvested all their lives and soon fell into silence.

It's just that in this silence, a few black figures in the shadow carefully and quickly jumped out from a dark cave-like place. There were naturally some torches erected around the tower for lighting. But this place happened to be in the shadow, it seemed.

It was as if it had been deliberately planned long ago.

And when the shadows came out one after another, the firelight finally reflected their faces, which were completely different from the Han people. They were a group of Huns soldiers, headed by a big man who looked like a general. He lowered his head and looked down not far away.

At the tower of the big fortress, the lights were brightly lit there, reflecting the guards patrolling back and forth. He indeed sneered and said: "Good opportunity, kill!"

"kill……"

The Xiongnu language's cry to kill is naturally different from that in Chinese, but as the soldiers of Lu Bu's army who had fought several battles with the Huns, they were definitely not unfamiliar with such a cry, so their first reaction was that the enemy was attacking.

Since Cao Xing had already ordered this point, all the soldiers were mentally prepared. Even though they still did not expect that the enemy's attack would happen at this time and so suddenly, they quickly calmed down and raised their weapons to prepare for the attack.

enemy.

However, since the Huns dared to shout to alert the other side, they were not afraid of them making preparations in advance, and no matter how much they prepared, they would always end up being hasty. That was their best opportunity.

But when this group of Huns and horses took advantage of the darkness to avoid the light of the fire and gradually approached the tower along the gentle cliffs on both sides of the big city fortress, they encountered a scene they had never expected.

call out!

With a "poof" sound, one of the Hun soldiers walking in front suddenly stopped and then fell to the ground, shocking everyone around him, but this was just the beginning.

Then, just like the Huns dealt with the Han guards just now, the enemies who came from nowhere greeted the uninvited night attackers with "enthusiasm" with their rain of arrows.

When the figures around them fell down one by one, these Huns, including the big man who looked like a general, were all stunned. Everything they expected was in vain. This was not the scene they had foreseen, or what they had imagined at this time.

The top of the city tower should not look like this at all.

But the next moment, the Hun general realized that the direction of the arrow rain was not from the tower at all, but from the cliffs on both sides. He couldn't help but look up, and was shocked. They were not far above their heads.

There were scattered torches everywhere, illuminating figures one after another, and the sharp arrows in their hands that were illuminated by the fire were particularly dazzling and chilling.

"Retreat quickly, return to the tunnel..."

As the general shouted, the Hun soldiers began to retreat hastily, but they came out too deep, and most of them had no time to retreat. They could only look for some shadows that were not easy to be found, or simply ran to

Go to the tower and seek shelter.

Protection, and in the process, dozens and hundreds of corpses were left behind. This is because even in the dark night, even if there is firelight, it still greatly affects the sight and weakens the power of the arrows. These and the previous corpses almost make these

The empty space, which was not very big, was filled with piles.

At this time, on the tower of the big city fortress, several more figures had appeared. At a glance, it was obvious that they were generals, and Cao Xing and others were among them.

It wasn't until they witnessed all this with their own eyes that the generals realized that the loopholes in the cliffs on the left and right sides of the fortress tower that Cao Xing mentioned were due to the fact that there were tunnels dug by the Huns on both sides.

Due to the geographical situation, the enemy could not dig tunnels into the big city fortress, nor could it be easily captured by attacking directly. They had to find another way to start from the cliff, which seemed easier.

Of course, this is not because the Huns were very good at digging tunnels. On the contrary, their siege methods were really clumsy. However, the internal structure of the rock walls on both sides of the large fortress became extremely fragile due to years of erosion.

Some of the soldiers who went to Bei were prisoners who had been taken over from Humphrey. They knew this place very well and directly made such suggestions. In fact, they didn't spend much effort at all to dig a tunnel on the cliffs on both sides.

Come.

It turned out that all this was hidden from the sky and seamlessly. Cao Xinghui discovered that it was just a coincidence. One of the times he was going back and forth inadvertently allowed him to vaguely hear the sound of the sound of metal and stone striking. If it was normal, he might also

I didn't pay much attention to it, but I was very sensitive at that time, so by accident, I stretched out my hand and tapped it with my knuckles.

This knock surprised him, because when he put his ear up, he actually heard an echo. This would not be possible in the real world. There was obviously a hole inside. This made Cao Xing suspicious, and he ordered people to pay attention to this place secretly day and night.

, finally discovered some clues the night before.
Chapter completed!