XX: End of the Citadel

In the B region citadel, thousands of cultivators stood in a defensive formation around the citadel at the same time the dozen winged squad positioned themselves holding huge metal tubes like a rocket launcher but a few times bigger.

It was a magic ray cannon. Converting all the energy inside the crystals into a pure energy ray, extremely effective against beasts and highly know in the Mortal Alliance.

As the prime beasts advanced to the line of nine hundred meters outside the citadel. The winged cultivators started firing numerous colorful rays, ripping through the skies and hitting the endless black clouds that approached.

"Burn you damn monsters!" Shouted a duck as he flew in the sky shooting rays from his cannon.

They managed to take down more the five black clouds but at the cost of all of their ammo.