The momentum of destruction accompanied by the gradual increase in the amplitude of the tremor on the ground, a knight shrouded in a dark aura covered up the sky to this side, and the skeletons who were rummaging through the graves at the two ends were already prostrate on the ground at this moment, and the ranks between the undead were strict, and the lower ranks met the high-level undead, and they could only die if they surrendered.

However, generally speaking, high-level undead do not look down on low-level creatures such as skeletons.

"Hula~"

A pair of fleshy wings pierced through the restraints of the clothes and stretched out, flapped their wings, and quickly flew away from the place, although the realm was very high, but in terms of strength, it was only the fifth order, and he didn't have any knowledge of the underworld, Zhuo Ao didn't want to meet these powerful undead legions.

"Boom~" A large group of hundreds of death knights, led by a tall knight who was riding the nightmare of hell, swept through like lightning, and the surging wind shattered the skeletons that were lying on the ground at both ends, leaving only two dark green ghost fires floating in the air, floating in the wind blankly.

Zhuo Ao was cold, and at the moment when this group of knights swept by, he clearly felt that the nightmare knight's gaze swept over him, probably not finding the threat, or not paying attention to himself at all, just glanced at it lightly, but did not stop at all.

Looking at the direction in which this group of undead departed, Zhuo Ao breathed a sigh of relief, but there was a bit of incredulity in his eyes, the strength of that nightmare knight was difficult to find out, at least it was also a strong person at the level of a saint master, and that group of death knights were all tenth-order undead, and there were even two terrifying knights with the strength of the holy realm!

Returning to the cemetery, looking at the direction of a group of undead spirits, Zhuo Ao couldn't help but sigh a little, this kind of strength can already sweep a mortal empire, and looked at the ghost fires floating around him. Zhuo Ao finally knew where these ghost fires came from.

The sorrow of the weak!

Weak is not terrible, which strong person is not from weak to strong, but he doesn't even have the courage to run, then he can only say that he deserves it, and he does not deserve any pity and sympathy.

Shaking his head, Zhuo Ao spread his wings. Flying in the direction that the pair of knights left, although with his current strength, any one of the knights in that team can rub him when they come out, but it shouldn't be a problem to just follow behind him from a distance, and he is also very curious, where are these knights going with a murderous look? He didn't think that such a group of knights had come here to patrol.

Although the strength is not high, the speed of the blood clan itself is far beyond that of the same level, and soon the traces of that group of death knights can be seen. At the moment, he is fighting fiercely with a black knight legion.

"Boom~"

The cold iron hooves of the Death Knight slammed into the formation formed by the Black Knights, and a large number of Black Knights were directly smashed to pieces by the raging Death Knights, but the speed of the Knight Legion was finally blocked by this group of Black Knights.

There was no morale, no roar, only the clash of swords, the selfless fighting of the two legions, and the death of their companions would not make them fearful, nor would they be angry. Just slash the weapon in your hand at the opponent again and again until the opponent dies or disappears completely. This is a war between the undead.

Zhuo Ao's gaze did not linger on the two legions in the fierce battle, and his gaze was finally dominated by the leaders of both sides, a burly man with a two-man sword on his shoulder, wearing a black armor and a hideous helmet. The other is the Nightmare Knight, for some reason, these two undead creatures give Zhuo Ao the feeling of a little human aura, rather than the undead creatures that are fighting together over there.

"O'Sachs. The other three demon marshals have already thrown themselves into our adulthood, you and I are both members of the demon clan, and we are loyal to our lords, what's so bad? Do you really want to bury that fallen angel who has been dead for 300 years? Ignoring the two armies that had sacrificed their lives, the Nightmare Knight Knight raised the knight's spear in his hand and looked at the burly man opposite.

"Can you talk?" Zhuo Ao's eyes widened in surprise, it was the first time he had seen an undead spirit that could communicate normally like a human.

"Hmph, if it weren't for the despicable Sohak's conspiracy, how could he be the master's opponent with him, a junior demon king, and it would be delusional to ask me to pledge allegiance to such a despicable and shameless demon!" O'Sachs roared.

"Look for death! You dare to call adults by their names! Nightmare Knight's eyes were cold, the four hooves of the nightmare under his crotch spread out, and appeared in front of Osaac like lightning, the knight's spear stabbed Osaac's chest, but was missed by the huge broadsword, and the weapon that should have been bulky was very flexible in Osax's hands, and it was a battle with Nightmare Knight for a while.

Hades? Fallen angels?

Zhuo Ao sat on the branch of a dead tree from afar, watching the battle between the two from afar, groping his chin and thinking, it seems that the underworld is not as monotonous as he imagined, and the underworld is not as he thought before, it is a group of skeleton zombies without any thinking at the mercy of others or something, but war is obviously the main theme of this world.

Originally, Zhuo Ao planned to take a look at the excitement and leave after seeing if he could get some useful information, but looking at the two people in the fierce fight, as well as the black warrior and the death knight who were almost disabled, Zhuo Ao suddenly changed his mind again.

If the blood clan wants to quickly improve its strength, it must constantly eat high-level blood, originally Zhuo Ao had already made up his mind, if there were no living people in the underworld, he would enter the secret world to hunt, but now it seems that there is no need, when the two of them talked before, Zhuo Ao had already determined that these two people had the flow of qi and blood, and the blood clan was very sensitive to blood energy.

Although it is a very old-fashioned plot for the snipe and the clam to compete for the fisherman's profit, but for him who only has fifth-order strength now, if he wants to survive better in this dangerous underworld, he must not miss any opportunity to become stronger.

After all, the number of black knights was ten times more than that of the death knights, even if they were much worse in terms of individual strength, but under the effect of the crowd tactics, they finally killed five hundred death knights and even two terrifying knights comparable to the realm of the Holy Realm.

Zhuo Ao, who was sitting on a tree and watching the battle bored, watched a group of cavalry fight to the death with a group of infantry in the battle, and couldn't help but be amused, how could the cavalry be so useful? Except for the initial round of charges, the later battles basically used these death knights as infantry, and Zhuo Ao finally knew why the group of terrifying knights in the Castle of the Dead were killed by a group of mercenaries.

At the same time, as the leader of both sides, he didn't pay too much attention to the victory or defeat of his subordinates, and at this moment it had reached a fever pitch, the knight's knight spear of the Nightmare Knight pierced the shoulder of the Underworld Warrior fiercely, and although the Underworld Warrior's big sword was avoided by the other party, it cut off a large piece of flesh from the opponent's body.

Greedily sniffing the bloody breath in the air, Zhuo Ao felt that his behavior was a little perverted, but he couldn't help but be attracted by the smell, and at the same time he was dissatisfied with the two of them for such a savage and wasteful style of play. If you continue to fight like this, when the fight is over, there will not be much blood left for yourself.

Think of a way.

Zhuo Ao looked at the two people who were anxious to see in the fierce battle that it would be difficult to distinguish the winner in a short period of time, and then looked at the remaining group of black warriors, although these black warriors were only eighth-order undead, but they seemed to be inferior to them at present, and if they were not eliminated, it would be a big trouble.

You'll have to find a way to get rid of them in one pot.

Looking at the surrounding terrain, it is a very open area, but because of the fog that is always shrouded in the underworld, even the blood clan with night vision can hardly see too far away.

With a move in his heart, a desperate banshee appeared on Zhuo Ao's side with a megaphone, and Zhuo Ao handed it an echo wall, and asked it to take the echo wall according to Zhuo Ao's command, quietly bypassing the center of the battle between the two sides, and placing the echo wall in the direction directly opposite this side at the position designated by Zhuo Ao, with its back to the battle group face the echo wall.

According to the law, last time, only five echo walls made the Holy See and the four major families suffer a big loss, this time, Zhuo Ao directly prepared thirty echo walls, forming a circle, surrounding the knights and warriors in the fierce battle and the black warriors in the most central position.

When everything was ready, the Nightmare Knight in the fierce battle was cut off by the Broadsword Warrior's sword, and the Nightmare Knight Knight's horse rolled off the horse's back in embarrassment, and with a fierce elbow blow, the chest of the Broadsword Warrior Osaus was dented, and then he roared and stabbed the knight's spear into the opponent's chest.

Zhuo Ao didn't have time to appreciate this kind of pure master's style of fighting at this moment, flapped his wings away from the center of the battle, put on a pair of earplugs for himself, looked at the two people who were entangled, and a wicked smile pulled up at the corner of his mouth, his first meal in the underworld finally came to an end!

"Ah~" At the moment when the two men rolling together let out an angry roar, on the empty horizon, accompanied by a sharp scream, a circle of invisible sound waves continued to hit the pre-prepared echo wall under the action of the megaphone, high-frequency sound waves, in the moment of the sound echo, the thirty desperate banshees who screamed were all crushed, and at the same time, under the effect of the echo wall, there were also a large number of black warriors who were directly crushed, with strong bodies, they were under this powerful range attack, Again, it didn't last long before the army was wiped out.

Under the effect of the echo wall in a circle, the sharp voice was bounced back again and again, as the most central position of the broadsword warrior Ossus and Nightmare Knight, as the masters of the Holy Master realm, although they were not directly eliminated like the fragile Desperate Banshee and the Black Warrior, but for them who were already exhausted by a fierce battle, perhaps direct death was a happy thing. (To be continued.) )