The battle grew ever fiercer. By now, atop the city walls, the army of Ferocious Beasts had fully clashed with the human soldiers, and the soldiers had already suffered considerable casualties. If this continued, it would not be long before the city walls were occupied by the Ferocious Beasts.
Just then, a loud shout rang out. "Activate the formation!" At the general's command, the entire city wall began to glow faintly. Lines of Spirit Formation patterns slowly flowed across the stone bricks, spreading throughout the area.
Very quickly, the light began to spread upward, enveloping both the Ferocious Beasts and the humans. Almost instantly, the light changed. The glow around the humans gradually formed into armor—armor made of light. Before such armor, even attacks from Ferocious Beasts at the Spirit General Realm found it difficult to injure experts of the same level.
The light around the Ferocious Beasts changed as well, becoming a thin membrane that wrapped around them. Yet this membrane was not there to protect the Ferocious Beasts. On the contrary, it resembled the light screen that ranged attacks passed through.
When attacks passed through the membrane, they were strengthened. More importantly, the membrane worked only one way. Not only were the Ferocious Beasts' attacks not enhanced, they were instead weakened considerably. With this layer of light, the offensive and defensive balance immediately changed drastically. The humans now dominated the battlefield; fighting one against five was no longer a problem, and they held the defensive line firmly.
"Hehe, this is a special Spirit Formation developed specifically by our Frontier Fortress to deal with Exotic Beasts. Such formations exist only at the border; you will not see them elsewhere. Unfortunately, it cannot enhance the power of ranged weapons a second time."
Huo Hai took a look and found that