The second person to inflict considerable damage on Anzhou City's City-Defense Grand Formation was an ordinary-looking, middle-aged Golden Core late-stage cultivator dressed in yellow cultivator robes. The magical treasure he unleashed was a golden Treasure Seal, another upper-grade third-tier earth-attribute magical treasure. Clearly, this Golden Core cultivator practiced an earth-attribute cultivation method.
The treasure's most striking feature was its weight. Once unleashed, the Treasure Seal quickly expanded into a golden seal eight hundred zhang across and plunged from high above toward the City-Defense Grand Formation.
Because the Treasure Seal was extraordinarily heavy, its descent created the most imposing spectacle. Its thunderous roar drowned out the sounds of all the other magical treasures striking the formation.
The black spears released by Anzhou City's City-Defense Grand Formation shattered like glass at the slightest touch before the Treasure Seal.
When the Treasure Seal slammed into the formation's light barrier, it was as terrifying as a star crashing to earth. The tremendous shock wave whipped up dust that spread rapidly in every direction, and a towering mushroom cloud soon rose into the sky.
Under such a ferocious attack, the light barrier of Anzhou City's City-Defense Grand Formation shook like chaff in a sieve, trembling and swaying violently! Fortunately, spiritual energy kept surging toward the impact point like a raging tide, stubbornly resisting the Treasure Seal's tremendous force.
Since the Treasure Seal was square and lacked sharp points, it struggled to pierce the City-Defense Grand Formation's defensive light barrier, but it still consumed a large portion of the City-Defense Grand Formation's energy.
Watching this, Liu Changxu concluded that the best approach would be to attack first with heavy magical treasures like the Treasure Seal, drawing the formation's defensive power toward them, then use other treasures to break through.
Of course, the Azure Cloud Sect's first