Night fell quietly, and the silence of black enveloped the land, and the inside and outside of the city were peaceful and peaceful, like a hot land.

The guards patrolling the city tower are fighting with their eyelids, their fatigue is not pretending, Cao Xuan has made the upper and lower levels cautious and vigilant against enemy attacks since he took over the defense of the big city fortress, and is always vigilant against enemy attacks, not a war is better than a war, which is a heavy test for the physique, endurance and even spirit of the soldiers guarding the city tower, even if Cao Xuan deliberately divided them into several batches, but the delay in the arrival of the expected war is even more tormenting nerves, making them always in a tense state, Naturally, there will be some sleepiness at some point, but there are some things that shouldn't be at this time.

And it wasn't just them, but the few guards on the top of the tower set up on a flat ground on the cliff face were bored, and they were also a little unmotivated, and their overly concerned eyes were also sour and red, and they even burst into tears when they blinked.

At this moment, they didn't notice some slight movement coming from the cliff behind them.

At first, it was just some irregular and rhythmic sounds, but in the end they became louder and louder, and even a few of them disturbed the guards of the Lu Bu army near the tower, they listened attentively for a while and found nothing, and even two of them ran to a few places to check but found nothing, and were laughed at by their companions for being suspicious, after all, there was really no suitable hiding place around, did they really think they would hide in the stone wall?

This is too fantastical and whimsical, and the two of them can only shake their heads in confusion and walk away when they look at each other.

It didn't take long for the movement to start again, but the sound was always controlled as if it were deliberate. No one noticed anything out of the ordinary.

Then, I don't know how long it took, when the guards on the tower began to yawn, the movement that seemed to be ringing all the time came to an abrupt end, and finally turned into a "click", as if as a terminator for the end.

The sound finally caught the attention of the tower guards again, and one by one they regained their spirits, and it was the two men who had been the first to walk to the place where the movement had occurred, but before they could get closer to take a closer look, they heard two "booms" in the air, which were the sound of sharp arrows breaking through the air. Then there were two screams. The sharp arrow of "poof" penetrated their flesh and bones, piercing their vitality, and quickly turned into two corpses and fell.

The sudden turn of events froze the guards around them, although they quickly came to their senses and prepared for action. But they were not as fast as the enemy who had been hiding in the shadows for a long time. A few more arrows swept through the air. Harvest all the Lu Bu guards near the left side of the tower, and then soon fall silent.

It was only in this silence that a few dark shadows in the shadows cautiously and quickly burst out of a dark cavern-like place, and naturally there were torches erected around the towers. But this place happened to be in the shadows, as if it had been deliberately calculated.

And when one after another shadows came out, the firelight finally reflected their faces, but it was very different from the Han people, they were a group of Hun soldiers, the first was a big man who looked like a general, he looked down at the big city tower not far below, there were also bright lights, reflecting the guards who came and went to patrol, he did sneer and said: "Good opportunity, kill!" ”

"Kill ......"

The shouting and killing sound of the Xiongnu language is different from that of Chinese, but as a soldier of the Lu Bu army who has fought several battles with the Huns and has some dealings, he is definitely no stranger to such shouts, so his first reaction is that the enemy is coming.

For this point, because Cao Xing had already given orders, all the soldiers were mentally prepared, even if they still did not expect that the enemy's attack would occur at this time and would happen so suddenly, they still quickly calmed down and raised their weapons to prepare to meet the enemy.

However, since the Huns dared to shout to alarm the other party, they were not afraid that they would prepare early, and even if they prepared any more, it would always be a little hasty in the end, and that was their best chance.

But when this group of Huns took advantage of the night to avoid the light of the fire, and gradually approached the city tower along the gentle cliffs on both sides of the big city, they encountered a scene that they absolutely did not expect.

Shout!

With a "poof", one of the Hun soldiers walking in front of the figure suddenly stopped, and then fell to the ground with a bang, startling everyone around, and this was only the beginning.

Then, just like the Huns dealing with those Han guards, the enemy who didn't know where they came from greeted this group of uninvited night raiders with their rain of arrows.

When the figures of the robes around them fell, these Huns, including the big man who looked like a general, were all stunned, and everything they expected was disappointed, this was not the scene they foresaw at all, or they imagined that the city tower at this time should not be like this at all.

But the next moment, the Hun general reacted, the direction of the rain of arrows was not the city tower at all, but on the cliffs on both sides, he couldn't help but look up, his heart was taken aback, there were scattered torches not far above their heads, shining one after another figures, as well as the sharp arrows in their hands that were reflected by the firelight and were extremely dazzling and chilling.

"Retreat, retreat into the tunnel......"

With the shouting of the main general, this group of Hun soldiers began to retreat in a hurry, but they came out too deep, most of them did not have time to retreat, they could only first look for some shadows that were not easy to find or simply ran to the side of the tower to seek cover, and in the process there were dozens of nearly hundreds of corpses, this is still because even if there is fire in the dark night, it still greatly affects the vision and weakens the power of the arrows, and these and the previous corpses almost fill this small open space.

At this time, on the tower of the big city fortress, I don't know when there were already a few more figures, and at a glance, I knew that it was the general class, and Cao Xing and others were among them.

It was not until this time that the generals knew that the loopholes in the cliffs on the left and right sides of the big city fortress tower that Cao Xing had said came from the tunnels that had been dug by the Huns on both sides.

Due to the geographical relationship, the enemy could not dig a tunnel to enter the big city, and he could not take it lightly by attacking it directly, so he had to find another way to start from this cliff, which seemed simpler.

Of course, this is not because the Huns are very good at digging through the tunnel, on the contrary, their siege methods are really clumsy, but they can't bear the internal structure of the rock walls on both sides of this big city fortress because of years of erosion and appear extremely fragile, some of the Bei army are prisoners received from Yufro, who know this place very well, so they directly proposed to build such a city, they actually did not spend much effort at all, and dug a tunnel on the cliff walls on both sides.

Originally, this qiē was a seamless concealment from the sky and the sea, Cao Xing would find that it was just a coincidence, he inadvertently let him vaguely hear the sound of a golden stone blow in it in one of the several circles back and forth, if it was usual, he might not care too much, but at that time, when his mind was sensitive, the ghost made the god generally stretched out his hand and knocked on it with his knuckles.

This knock surprised him, because he put his ear up, and actually heard the echo, if it was on the ground, it was naturally impossible to do so, obviously there was a hole in it, which made Cao Xuan suspicious, and then ordered people to pay attention to this place secretly day and night, and finally found some clues the night before.

The Huns still didn't know it, so Cao Xing simply planned to bring these Huns up, and then annihilate them in one fell swoop. (To be continued......)