Sirens at the border fort echoed in the night sky.

However, the sirens did not come from the fort at the very edge of the southern border, but from the fort located three kilometers from the southern border.

A long roar sounded in the night sky, and in the roar of the storm, the high-pressure condensed wind bombs fell to the ground.

In the next moment, the life force shell connected to the wind bomb and the chimeric wind element burst, and the high-speed wind-rolling wind bomb brought up countless wind blades like sharp claws, forming a high-speed whirling storm vortex around it.

Countless sand and gravel debris, including some dwarves, spiraled into the air as the storm whirled, becoming part of the tornado's vortex.

However, it was also at this time that an order came from the fortress -

"The armor and artillery units start the defense, and the ancient armor and artillery units start the defense!"

"Equip the Rune Wind Shield! Protect the artillery and artillery units! ”

"Fight back!

！ Light up the sky for me! ”

The loud voice of the commander of the fortress was heard throughout the fortress amid the roaring shouts of filial piety.

It was also at this moment, among the war weapons and artillery that had rune dwarves on duty at that moment, the huge barrels raised high lit up with dazzling, blazing brilliance—

Rumble!

！

With a violent roar, the huge cannon barrel parts lit up with rune brilliance, and the Genburg dwarves used the life force in their bodies to drive the resonance runes, and manipulated the firing parts to detonate the elemental roar.

In the roar of the fire elemental and wind elemental, the elemental bomb engraved with runes and full of vitality spun and shot out the barrel of the cannon in the roar.

With a whistling sound, the elemental bomb, which was completely untargeted, exploded in the sky.

The blazing fire, the fire elemental spread with the shock wave and with the heat wave.

At this moment, the sky was lit up.

The Genburg dwarven gunners, also at this moment, from the shouts of the dwarves in charge of reporting the point, resonated with the drive components, and aimed the barrels at the sky, at the tyrant wing group with huge wings.

Located in the night sky, one or two meters above the sky, a black-feathered wyvern with only a huge beak was clearly captured in the dwarves' field of vision.

It was also at this moment that the weapons and artillery that had not been disturbed by the tornado immediately shone with the glow of runes, and the dwarves of Genburg manipulated them with rune resonance, driving the weapons and artillery to fire whistling elemental blasts to launch an array of artillery bombardments.

Rumble! Rumble! Rumble! Rumble! Rumble!

And around those tornado-bombarded weapons and artillery, the dwarves wearing full-body armor and connecting themselves with the heavy and huge war weapons and cannons, and the dwarves holding heavy rune wind shields also let out a low roar at this moment-

With the light of the runes lit up, the sharp blade tornado that was originally rolling at high speed and raging, some areas quickly froze, and in just a dozen seconds, it burst apart under the interference of dozens of rune wind shields.

It was also at this moment that the weapons and artillery that had not yet been destroyed fired elemental explosives with a roaring sound.

Rumble! Rumble! Rumble! Rumble! Rumble!

The sound of shelling sounded one after another, as if the whole sky lit up.

And at this time, a strange explosive bomb exploded in the sky-

Death in the sky.

In the sky, the blazing fire element was rolling, and the wind element, which spread and surging under the influence of the fire element, completely turned into a violent wind at this moment, as if it was about to tear everything apart, and rioted indiscriminately.

Though that wasn't enough to stop the Tyrant Wings with their hard beaks.

However, when these wyverns with black feathers chose to take off into the air and shift their positions, trying to get out of the area and position of the Sky Death, and absorb the wind elements in other sky regions, above the ground, in the fortress, three weapons that bloomed with blue thunder raised their barrels towards the sky.

The Beaked Feather Wyverns chose to attack almost the moment they spotted them, when they spotted the blue thunder light.

However, the dwarf who was several times more powerful than other weapons and artillery, and who was holding a rune wind shield, at this moment, held up the heavy giant shield in his hand—

Resonance runes lit up one after another, driving spell-like spells against the wind element.

The tornado vortex that smashed to the ground, torn apart the life force shell, and was released, lasted less than two seconds before it collapsed and dissipated.

It was also at this moment that inside the three imitation ancient cannons, azure thunder light flowed out from the elemental gems, and the azure blue that fluttered in the track, under the precise control of more than a dozen Genbao dwarves, the heavy, rune-engraved hard metal, accumulated and circulated, and advanced at high speed in the cannon guide rail-

Airplanes!

！

In a sound that was completely different from the gun, the thunder-filled bullet pierced the sky, and in the sound of breaking through the sound barrier, it shot at a beak-feathered wyvern that had gathered its wings in the sky to defend against the flame impact of the elemental bomb.

Rumble!

！

The storm shield, which was composed of the wind element embedded with the life force, and obtained strong protective effect in the high-speed rotation of the dense wind element, was shattered and broken down at this moment.

The rune-strengthened metal had melted and softened, bursting and spreading out in the midst of the violent impact.

And it is filled with gathered thunder elements, and at this moment, they are connected to each other in a web of weaving—

A miserable howl rang out in the sky.

Although the bursting scales didn't catch its flesh from being touched by the small pieces of scorching red metal, the largest bullet shattered the scales and penetrated its flesh.

The huge beaked feathered wyvern fell from the sky in sharp pain from the scorched blood scales.

At this time, one or two beaked feather wyverns flew from both sides, grabbed its body with a hard grasp, and a pair of wings were raised, and the high-speed rolling storm blocked the impact of elemental explosives fired from the weapons and artillery.

But.....

At this moment, in another fortress two or three kilometers away from the ground they attacked, the battle artillery and ancient artillery also raised their barrels.

Rumble! Rumble! Rumble! Rumble! Rumble!

Buzz——! Buzz——! Buzz——!

Loud and humming, the huge weapons of the dwarves seemed to be ready to meet the attack, and they were already ready to fire crossfire.

In the sky, there was a violent roar of elemental bombs exploding.

The waves of fire elementals spread with the impact of the explosion, dyeing the deep night as bright as the sky in layers.

The dwarves surrounding the artillery and artillery weapons also let out cheers as they clenched their rune wind shields, ready to resist the storm.

Attack the mountains, even if it is a dragon, you will pay the price of death!

However, at this moment, in the bright vision of the dwarves, above the night sky illuminated by the waves of fire, like dark clouds, the wings surged again—

"Roar!

！ ”

With a roar, a huge black shadow with terrifying wing claws smashed into the fortress positions from the distant sky.

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